- All sections
- C - Chemistrymetallurgy
- C04B - Limemagnesiaslagcementscompositions thereof, e.g. mortars, concrete or like building materialsartificial stoneceramicsrefractoriestreatment of natural stone
- C04B 111/28 - Fire resistance
Patent holdings for IPC class C04B 111/28
Total number of patents in this class: 412
10-year publication summary
|
25
|
41
|
39
|
48
|
33
|
29
|
46
|
29
|
32
|
23
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saint-Gobain Placo | 237 |
14 |
| United States Gypsum Company | 905 |
10 |
| The Intellectual Gorilla GmbH | 29 |
9 |
| BASF SE | 21071 |
7 |
| Hilti Aktiengesellschaft | 3525 |
7 |
| Sika Technology AG | 2890 |
7 |
| Gold Bond Building Products, LLC | 200 |
6 |
| Georgia-Pacific Gypsum LLC | 216 |
5 |
| Armstrong World Industries, Inc. | 352 |
5 |
| Geopolymer Solutions, LLC | 16 |
5 |
| Parexgroup SA | 33 |
5 |
| Saint-Gobain Isover | 644 |
5 |
| Synthos S.A. | 51 |
5 |
| Evonik Operations GmbH | 4186 |
5 |
| O'daniels, LLC. | 60 |
5 |
| Evonik Degussa GmbH | 1476 |
4 |
| Johns Manville | 949 |
4 |
| Knauf Gips KG | 611 |
4 |
| Imertech SAS | 229 |
4 |
| First Point A.S. | 36 |
4 |
| Other owners | 292 |