- All sections
- E - Fixed constructions
- E04D - Roof coverings; sky-lights; gutters; roof-working tools
- E04D 3/28 - Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like of glass
Patent holdings for IPC class E04D 3/28
Total number of patents in this class: 44
10-year publication summary
2
|
3
|
4
|
4
|
1
|
2
|
0
|
1
|
1
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Dan-Pal | 24 |
10 |
SABIC Global Technologies B.V. | 4044 |
9 |
Sabic Innovative Plastics IP B.V. | 683 |
4 |
Kingspan Research and Developments Limited | 39 |
4 |
CPI Daylighting, Inc. | 14 |
2 |
Dott. Gallina SRL | 6 |
2 |
Bayer MaterialScience AG | 874 |
1 |
Corning Incorporated | 9932 |
1 |
DAe Han Steel Co., Ltd. | 1 |
1 |
Danpal | 1 |
1 |
Nucor Corporation | 425 |
1 |
Bayer MaterialScience GmbH | 2 |
1 |
Carbonara Rocco & C. SNC | 1 |
1 |
G. Tröster E. K. | 5 |
1 |
Gi-plast S.r.l. | 1 |
1 |
Latrave Limited | 1 |
1 |
Polimeros Gestion Industrial, S.L. | 6 |
1 |
Renolit Ondex S.A.S. | 1 |
1 |
Groupe Protection Securite | 1 |
1 |
Other owners | 0 |