IPC Classification

Class code (prefix) Descriptions Number of results
E04B 1/00 Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
E04B 1/02 Structures consisting primarily of load-supporting, block-shaped or slab-shaped elements
E04B 1/04 Structures consisting primarily of load-supporting, block-shaped or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
E04B 1/06 Structures consisting primarily of load-supporting, block-shaped or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material the elements being prestressed
E04B 1/08 Structures consisting primarily of load-supporting, block-shaped or slab-shaped elements the elements consisting of metal
E04B 1/10 Structures consisting primarily of load-supporting, block-shaped or slab-shaped elements the elements consisting of wood
E04B 1/12 Structures consisting primarily of load-supporting, block-shaped or slab-shaped elements the elements consisting of other material
E04B 1/14 Structures consisting primarily of load-supporting, block-shaped or slab-shaped elements the elements being composed of two or more materials
E04B 1/16 Structures made from masses, e.g. concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, sub-structures to be coated with load-bearing material
E04B 1/18 Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
E04B 1/19 Three-dimensional framework structures
E04B 1/20 Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stone-like material
E04B 1/21 Connections specially adapted therefor
E04B 1/22 Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stone-like material with parts being prestressed
E04B 1/24 Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
E04B 1/26 Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
E04B 1/28 Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of other material
E04B 1/30 Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
E04B 1/32 Arched structures; Vaulted structures; Folded structures
E04B 1/34 Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
E04B 1/35 Extraordinary methods of construction, e.g. lift-slab, jack-block
E04B 1/36 Bearings or like supports allowing movement
E04B 1/38 Connections for building structures in general
E04B 1/41 Connecting devices specially adapted for embedding in concrete or masonry
E04B 1/48 Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses
E04B 1/49 Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses with self-penetrating parts, e.g. claw dowels
E04B 1/58 Connections for building structures in general of bar-shaped building elements
E04B 1/61 Connections for building structures in general of slab-shaped building elements with each other
E04B 1/62 Insulation or other protection; Elements or use of specified material therefor
E04B 1/64 Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
E04B 1/66 Sealings
E04B 1/68 Sealings of joints, e.g. expansion joints
E04B 1/70 Drying or keeping dry, e.g. by air vents
E04B 1/72 Pest control
E04B 1/74 Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
E04B 1/76 Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
E04B 1/78 Heat insulating elements
E04B 1/80 Heat insulating elements slab-shaped
E04B 1/82 Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
E04B 1/84 Sound-absorbing elements
E04B 1/86 Sound-absorbing elements slab-shaped
E04B 1/88 Insulating elements for both heat and sound
E04B 1/90 Insulating elements for both heat and sound slab-shaped
E04B 1/92 Protection against other undesired influences or dangers
E04B 1/94 Protection against other undesired influences or dangers against fire
E04B 1/98 Protection against other undesired influences or dangers against mechanical destruction, e.g. by air-raids
E04B 1/99 Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound
E04B 1/342 Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
E04B 1/343 Structures characterised by movable, separable, or collapsible parts, e.g. for transport
E04B 1/344 Structures characterised by movable, separable, or collapsible parts, e.g. for transport with hinged parts
E04B 1/346 Rotary buildings; Buildings with rotary units, e.g. rooms
E04B 1/348 Structures composed of units comprising at least considerable parts of two sides of a room, e.g. box-like or cell-like units closed or in skeleton form
E04B 1/682 Sealings of joints, e.g. expansion joints formed in situ
E04B 1/684 Sealings of joints, e.g. expansion joints using preformed elastomeric elements
E04B 1/686 Sealings of joints, e.g. expansion joints using preformed elastomeric elements comprising a plurality of hollow, deformable internal cells
E04B 2/00 Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
E04B 2/02 Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
E04B 2/04 Walls having neither cavities between, nor in, the solid elements
E04B 2/06 Walls having neither cavities between, nor in, the solid elements using elements having specially-designed means for stabilising the position
E04B 2/08 Walls having neither cavities between, nor in, the solid elements using elements having specially-designed means for stabilising the position by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails
E04B 2/10 Walls having neither cavities between, nor in, the solid elements using elements having specially-designed means for stabilising the position by filling material with or without reinforcements in small channels in, or in grooves between, the elements
E04B 2/12 Walls having neither cavities between, nor in, the solid elements using elements having a general shape differing from that of a parallelepiped
E04B 2/14 Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element
E04B 2/16 Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element using elements having specially designed means for stabilising the position
E04B 2/18 Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element using elements having specially designed means for stabilising the position by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails
E04B 2/20 Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element using elements having specially designed means for stabilising the position by filling material with or without reinforcements in small channels in, or in grooves between, the elements
E04B 2/22 Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element using elements having a general shape differing from that of a parallelepiped
E04B 2/24 Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element the walls being characterised by fillings in some of the cavities forming load-bearing pillars or beams
E04B 2/26 Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element the walls being characterised by fillings in all cavities in order to form a wall construction
E04B 2/28 Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid
E04B 2/30 Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid using elements having specially designed means for stabilising the position; Spacers for cavity walls
E04B 2/32 Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid using elements having specially designed means for stabilising the position; Spacers for cavity walls by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails
E04B 2/34 Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid using elements having specially designed means for stabilising the position; Spacers for cavity walls by filling material with or without reinforcements in small channels in, or in grooves between, the elements
E04B 2/36 Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid using elements having a general shape differing from that of a parallelepiped
E04B 2/38 Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid the walls being characterised by fillings in some of the cavities forming load-bearing pillars or beams
E04B 2/40 Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid the walls being characterised by fillings in all cavities in order to form a wall construction
E04B 2/42 Walls having cavities between, as well as in, the elements; Walls of elements each consisting of two or more parts, kept in distance by means of spacers, at least one of the parts having cavities
E04B 2/44 Walls having cavities between, as well as in, the elements; Walls of elements each consisting of two or more parts, kept in distance by means of spacers, at least one of the parts having cavities using elements having specially designed means for stabilising the position; Spacers for cavity walls
E04B 2/46 Walls having cavities between, as well as in, the elements; Walls of elements each consisting of two or more parts, kept in distance by means of spacers, at least one of the parts having cavities using elements having specially designed means for stabilising the position; Spacers for cavity walls by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails
E04B 2/48 Walls having cavities between, as well as in, the elements; Walls of elements each consisting of two or more parts, kept in distance by means of spacers, at least one of the parts having cavities using elements having specially designed means for stabilising the position; Spacers for cavity walls by filling material with or without reinforcements in small channels in, or in grooves between, the elements
E04B 2/50 Walls having cavities between, as well as in, the elements; Walls of elements each consisting of two or more parts, kept in distance by means of spacers, at least one of the parts having cavities using elements having a general shape differing from that of a parallelepiped
E04B 2/52 Walls having cavities between, as well as in, the elements; Walls of elements each consisting of two or more parts, kept in distance by means of spacers, at least one of the parts having cavities the walls being characterised by fillings in some of the cavities forming load-bearing pillars or beams
E04B 2/54 Walls having cavities between, as well as in, the elements; Walls of elements each consisting of two or more parts, kept in distance by means of spacers, at least one of the parts having cavities the walls being characterised by fillings in all cavities in order to form a wall construction
E04B 2/56 Walls of framework or pillarwork; Walls incorporating load-bearing elongated members
E04B 2/58 Walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
E04B 2/60 Walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal characterised by special cross-section of the elongated members
E04B 2/62 Walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal characterised by special cross-section of the elongated members the members being formed of two or more elements in side-by-side relationship
E04B 2/64 Walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
E04B 2/66 Walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete characterised by special cross-section of the elongated members
E04B 2/68 Walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete made by filling-up wall cavities
E04B 2/70 Walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood
E04B 2/72 Walls of elements of relatively thin form
E04B 2/74 Removable non-load-bearing partitions; Partitions with a free upper edge
E04B 2/76 Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal
E04B 2/78 Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal characterised by special cross-section of the frame members
E04B 2/80 Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of wood
E04B 2/82 Removable non-load-bearing partitions; Partitions with a free upper edge characterised by the manner in which edges are connected to the building; Means therefor; Special details of easily-removable partitions
E04B 2/84 Walls made by casting, pouring, or tamping in situ
E04B 2/86 Walls made by casting, pouring, or tamping in situ made in permanent forms
E04B 2/88 Curtain walls
E04B 2/90 Curtain walls comprising panels directly attached to the structure
E04B 2/92 Sandwich-type panels
E04B 2/94 Concrete panels
E04B 2/96 Curtain walls comprising panels attached to the structure through mullions or transoms
E04B 5/00 Floors; Floor construction with regard to insulation; Connections specially adapted therefor
E04B 5/02 Load-carrying floor structures formed substantially of prefabricated units
E04B 5/04 Load-carrying floor structures formed substantially of prefabricated units with beams of concrete or other stone-like material, e.g. asbestos cement
E04B 5/06 Load-carrying floor structures formed substantially of prefabricated units with beams of concrete or other stone-like material, e.g. asbestos cement placed against one another
E04B 5/08 Load-carrying floor structures formed substantially of prefabricated units assembled of block-shaped elements, e.g. hollow stones
E04B 5/10 Load-carrying floor structures formed substantially of prefabricated units with metal beams or girders, e.g. with steel lattice girders
E04B 5/12 Load-carrying floor structures formed substantially of prefabricated units with wooden beams
E04B 5/14 Load-carrying floor structures formed substantially of prefabricated units with beams or girders laid in two directions
E04B 5/16 Load-carrying floor structures wholly or partly cast or similarly formed in situ
E04B 5/17 Floor structures partly formed in situ
E04B 5/18 Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly cast between filling members
E04B 5/19 Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly cast between filling members the filling members acting as self-supporting permanent forms
E04B 5/21 Cross-ribbed floors
E04B 5/23 Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
E04B 5/26 Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with filling members between the beams
E04B 5/28 Cross-ribbed floors
E04B 5/29 Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated the prefabricated parts of the beams consisting wholly of metal
E04B 5/32 Floor structures wholly cast in situ with or without form units or reinforcements
E04B 5/36 Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
E04B 5/38 Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
E04B 5/40 Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element with metal form slabs
E04B 5/43 Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
E04B 5/44 Floors composed of stones, mortar, and reinforcing elements
E04B 5/46 Special adaptation of floors for transmission of light, e.g. by inserts of glass
E04B 5/48 Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
E04B 7/00 Roofs; Roof construction with regard to insulation
E04B 7/02 Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
E04B 7/04 Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs supported by horizontal beams or the equivalent resting on the walls
E04B 7/06 Constructions of roof intersections or hopped ends
E04B 7/08 Vaulted roofs
E04B 7/10 Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures
E04B 7/12 Roofs; Roof construction with regard to insulation formed in bays, e.g. sawtooth roofs
E04B 7/14 Suspended roofs
E04B 7/16 Roof structures with movable roof parts
E04B 7/18 Special structures in or on roofs, e.g. dormer windows
E04B 7/20 Roofs consisting of self-supporting slabs, e.g. able to be loaded
E04B 7/22 Roofs consisting of self-supporting slabs, e.g. able to be loaded the slabs having insulating properties, e.g. being laminated with layers of insulating material
E04B 7/24 Roofs consisting of self-supporting slabs, e.g. able to be loaded the slabs being collapsible, e.g. for transport
E04B 9/00 Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
E04B 9/02 Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation having means for ventilation or vapour discharge
E04B 9/04 Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, sheets or the like
E04B 9/06 Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction
E04B 9/08 Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction having the capability of expansion
E04B 9/10 Connections between parallel members of the supporting construction
E04B 9/12 Connections between non-parallel members of the supporting construction
E04B 9/14 Connections between non-parallel members of the supporting construction all the members being discontinuous and lying at least partly in the same plane
E04B 9/16 Connections between non-parallel members of the supporting construction the members lying in different planes
E04B 9/18 Means for suspending the supporting construction
E04B 9/20 Means for suspending the supporting construction adjustable
E04B 9/22 Connection of slabs, sheets or the like to the supporting construction
E04B 9/24 Connection of slabs, sheets or the like to the supporting construction with the slabs, sheets or the like positioned on, or held against, horizontal flanges of the supporting construction
E04B 9/26 Connection of slabs, sheets or the like to the supporting construction with the slabs, sheets or the like positioned on, or held against, horizontal flanges of the supporting construction by means of snap action of elastically deformable elements
E04B 9/28 Connection of slabs, sheets or the like to the supporting construction with the slabs, sheets or the like having grooves engaging with horizontal flanges of the supporting construction or accessory means connected thereto
E04B 9/30 Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation - characterised by edge details of the ceiling, e.g. securing to an adjacent wall
E04B 9/32 Translucent ceilings, i.e. permitting both the transmission and diffusion of light
E04B 9/34 Open-work ceilings, e.g. lattice type
E04B 9/36 Open-work ceilings, e.g. lattice type consisting of parallel slats