IPC Classification

Class code (prefix) Descriptions Number of results
H01C 1/00 RESISTORS - Details
H01C 1/01 Mounting; Supporting
H01C 1/02 Housing; Enclosing; Embedding; Filling the housing or enclosure
H01C 1/03 Housing; Enclosing; Embedding; Filling the housing or enclosure the resistive element being embedded in insulation with outer enclosing sheath with powdered insulation
H01C 1/04 Arrangements of distinguishing marks, e.g. colour coding
H01C 1/06 Electrostatic or electromagnetic shielding arrangements
H01C 1/08 Cooling, heating or ventilating arrangements
H01C 1/012 Mounting; Supporting the base extending along, and imparting rigidity or reinforcement to, the resistive element
H01C 1/014 Mounting; Supporting the resistor being suspended between, and being supported by, two supporting sections
H01C 1/016 Mounting; Supporting with compensation for resistor expansion or contraction
H01C 1/022 Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being openable or separable from the resistive element
H01C 1/024 Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being hermetically sealed
H01C 1/026 Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being hermetically sealed with gaseous or vacuum spacing between the resistive element and the housing or casing
H01C 1/028 Housing; Enclosing; Embedding; Filling the housing or enclosure the resistive element being embedded in insulation with outer enclosing sheath
H01C 1/032 Housing; Enclosing; Embedding; Filling the housing or enclosure plural layers surrounding the resistive element
H01C 1/034 Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath
H01C 1/036 Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath on wound resistive element
H01C 1/082 Cooling, heating or ventilating arrangements using forced fluid flow
H01C 1/084 Cooling, heating or ventilating arrangements using self-cooling, e.g. fins, heat sinks
H01C 1/125 Arrangements of current collectors of fluid contacts
H01C 1/142 Terminals or tapping points specially adapted for resistors; Arrangements of terminals or tapping points on resistors the terminals or tapping points being coated on the resistive element
H01C 1/144 Terminals or tapping points specially adapted for resistors; Arrangements of terminals or tapping points on resistors the terminals or tapping points being welded or soldered
H01C 1/146 Terminals or tapping points specially adapted for resistors; Arrangements of terminals or tapping points on resistors the resistive element surrounding the terminal
H01C 1/148 Terminals or tapping points specially adapted for resistors; Arrangements of terminals or tapping points on resistors the terminals embracing or surrounding the resistive element
H01C 3/00 Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids
H01C 3/02 Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids arranged or constructed for reducing self-induction, capacitance, or variation with frequency
H01C 3/04 Iron-filament ballast resistors; Other resistors having variable temperature coefficient
H01C 3/06 Flexible or folding resistors, whereby such a resistor can be looped or collapsed upon itself
H01C 3/08 Dimension or characteristic of resistive element changing gradually or in discrete steps from one terminal to another
H01C 3/10 Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids the resistive element having zig-zag or sinusoidal configuration
H01C 3/12 Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids the resistive element having zig-zag or sinusoidal configuration lying in one plane
H01C 3/14 Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical, or toroidal winding
H01C 3/16 Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical, or toroidal winding including two or more distinct wound elements, or two or more winding patterns
H01C 3/18 Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical, or toroidal winding wound on a flat or ribbon base
H01C 3/20 Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical, or toroidal winding wound on cylindrical or prismatic base
H01C 7/00 Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
H01C 7/02 Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
H01C 7/04 Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
H01C 7/06 Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material including means to minimise changes in resistance with changes in temperature
H01C 7/10 Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
H01C 7/12 Overvoltage protection resistors; Arresters
H01C 7/13 Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material current-responsive
H01C 7/18 Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material comprising a plurality of layers stacked between terminals
H01C 7/20 Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material the resistive layer or coating being tapered
H01C 7/22 Elongated resistive element being bent or curved, e.g. sinusoidal, helical
H01C 7/102 Varistor boundary, e.g. surface layers
H01C 7/105 Varistor cores
H01C 7/108 Metal oxide
H01C 7/112 ZnO type
H01C 7/115 Titanium dioxide- or titanate type
H01C 7/118 Carbide, e.g. SiC type
H01C 8/00 Non-adjustable resistors consisting of loose powdered or granular conducting, or powdered or granular semi-conducting material
H01C 8/02 Coherers or like imperfect resistors for detecting electromagnetic waves
H01C 8/04 Overvoltage protection resistors; Arresters
H01C 10/00 Adjustable resistors
H01C 10/02 Liquid resistors
H01C 10/04 Adjustable resistors with specified mathematical relationship between movement of resistor actuating means and value of resistance, other than direct proportional relationship
H01C 10/06 Adjustable resistors adjustable by short-circuiting different amounts of the resistive element
H01C 10/08 Adjustable resistors adjustable by short-circuiting different amounts of the resistive element with intervening conducting structure between the resistive element and the short-circuiting means, e.g. taps
H01C 10/10 Adjustable resistors adjustable by mechanical pressure or force
H01C 10/12 Adjustable resistors adjustable by mechanical pressure or force by changing surface pressure between resistive masses or resistive and conductive masses, e.g. pile type
H01C 10/14 Adjustable resistors adjustable by auxiliary driving means
H01C 10/16 Adjustable resistors including plural resistive elements
H01C 10/18 Adjustable resistors including plural resistive elements including coarse and fine resistive elements
H01C 10/20 Contact structure or movable resistive elements being ganged
H01C 10/22 Adjustable resistors resistive-element dimensions changing gradually in one direction, e.g. tapered resistive element
H01C 10/23 Adjustable resistors resistive-element dimensions changing in a series of discrete, progressive steps
H01C 10/24 Adjustable resistors the contact moving along turns of a helical resistive element, or vice versa
H01C 10/26 Adjustable resistors resistive element moving
H01C 10/28 Adjustable resistors the contact rocking or rolling along resistive element or taps
H01C 10/30 Adjustable resistors the contact sliding along resistive element
H01C 10/32 Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
H01C 10/34 Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path the contact or the associated conducting structure riding on collector formed as a ring or portion thereof
H01C 10/36 Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path structurally combined with switching arrangements
H01C 10/38 Adjustable resistors the contact sliding along resistive element the contact moving along a straight path
H01C 10/40 Adjustable resistors the contact sliding along resistive element the contact moving along a straight path screw-operated
H01C 10/42 Adjustable resistors the contact sliding along resistive element the contact moving along a straight path screw-operated the contact bridging and sliding along resistive element and parallel conducting bar or collector
H01C 10/44 Adjustable resistors the contact sliding along resistive element the contact moving along a straight path the contact bridging and sliding along resistive element and parallel conducting bar or collector
H01C 10/46 Arrangements of fixed resistors with intervening connectors, e.g. taps
H01C 10/48 Arrangements of fixed resistors with intervening connectors, e.g. taps including contact movable in an arcuate path
H01C 10/50 Adjustable resistors structurally combined with switching arrangement
H01C 11/00 Non-adjustable liquid resistors
H01C 13/00 Resistors not provided for elsewhere
H01C 13/02 Structural combinations of resistors
H01C 17/00 Apparatus or processes specially adapted for manufacturing resistors
H01C 17/02 Apparatus or processes specially adapted for manufacturing resistors adapted for manufacturing resistors with envelope or housing
H01C 17/04 Apparatus or processes specially adapted for manufacturing resistors adapted for winding the resistive element
H01C 17/06 Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
H01C 17/07 Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by resistor foil bonding, e.g. cladding
H01C 17/08 Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thin-film techniques by vapour deposition
H01C 17/10 Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thin-film techniques by flame spraying
H01C 17/12 Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thin-film techniques by sputtering
H01C 17/14 Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thin-film techniques by chemical deposition
H01C 17/16 Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thin-film techniques by chemical deposition using electric current
H01C 17/18 Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thin-film techniques by chemical deposition without using electric current
H01C 17/20 Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by pyrolytic processes
H01C 17/22 Apparatus or processes specially adapted for manufacturing resistors adapted for trimming
H01C 17/23 Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by opening or closing resistor tracks of predetermined resistive values
H01C 17/24 Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material
H01C 17/26 Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by converting resistive material
H01C 17/28 Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals
H01C 17/30 Apparatus or processes specially adapted for manufacturing resistors adapted for baking
H01C 17/065 Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick-film techniques, e.g. serigraphy
H01C 17/075 Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thin-film techniques
H01C 17/232 Adjusting the temperature coefficient; Adjusting value of resistance by adjusting temperature coefficient
H01C 17/235 Initial adjustment of potentiometer parts for calibration
H01C 17/242 Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material by laser
H01C 17/245 Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material by mechanical means, e.g. sand-blasting, cutting, ultrasonic treatment