- 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: 440
10-year publication summary
|
41
|
39
|
48
|
33
|
29
|
47
|
38
|
36
|
26
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saint-Gobain Placo | 272 |
15 |
| United States Gypsum Company | 923 |
10 |
| The Intellectual Gorilla GmbH | 29 |
9 |
| BASF SE | 21303 |
7 |
| Hilti Aktiengesellschaft | 3662 |
7 |
| Knauf Gips KG | 642 |
7 |
| Sika Technology AG | 3002 |
7 |
| Georgia-Pacific Gypsum LLC | 225 |
6 |
| Gold Bond Building Products, LLC | 195 |
6 |
| Armacell Enterprise GmbH & Co. KG | 159 |
5 |
| Armstrong World Industries, Inc. | 369 |
5 |
| Geopolymer Solutions, LLC | 16 |
5 |
| Parexgroup SA | 31 |
5 |
| Saint-Gobain Isover | 678 |
5 |
| Synthos S.A. | 52 |
5 |
| Evonik Operations GmbH | 4336 |
5 |
| O'daniels, LLC. | 62 |
5 |
| Evonik Degussa GmbH | 1379 |
4 |
| Johns Manville | 920 |
4 |
| Refratechnik Holding GmbH | 144 |
4 |
| Other owners | 314 |