- All sections
- C - Chemistry; metallurgy
- C04B - Lime; magnesia; slag; cements; compositions thereof, e.g. mortars, concrete or like building materials; artificial stone; ceramics; refractories; treatment of natural stone
- C04B 111/28 - Fire resistance
Patent holdings for IPC class C04B 111/28
Total number of patents in this class: 335
10-year publication summary
|
36
|
25
|
41
|
39
|
47
|
33
|
27
|
35
|
26
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saint-Gobain Placo | 176 |
11 |
| The Intellectual Gorilla GmbH | 31 |
9 |
| United States Gypsum Company | 1019 |
9 |
| BASF SE | 19740 |
7 |
| Hilti Aktiengesellschaft | 3227 |
7 |
| Evonik Operations GmbH | 3879 |
6 |
| Georgia-Pacific Gypsum LLC | 204 |
5 |
| Geopolymer Solutions, LLC | 16 |
5 |
| Saint-Gobain Isover | 603 |
5 |
| Evonik Degussa GmbH | 1574 |
4 |
| Johns Manville | 980 |
4 |
| Parexgroup SA | 40 |
4 |
| Sika Technology AG | 2650 |
4 |
| O'daniels, LLC. | 55 |
4 |
| The Boeing Company | 19843 |
3 |
| Henkel AG & Co. KGaA | 10129 |
3 |
| Alsitek Limited | 6 |
3 |
| Armacell Enterprise GmbH & Co. KG | 182 |
3 |
| CertainTeed Gypsum, Inc. | 180 |
3 |
| Holcim Technology Ltd. | 868 |
3 |
| Other owners | 233 |