- 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 11/00 - Calcium sulfate cements
Patent holdings for IPC class C04B 11/00
Total number of patents in this class: 233
10-year publication summary
|
20
|
26
|
17
|
8
|
18
|
13
|
13
|
9
|
11
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| United States Gypsum Company | 1019 |
55 |
| Yoshino Gypsum Co., Ltd. | 224 |
13 |
| Knauf Gips KG | 534 |
12 |
| Georgia-Pacific Gypsum LLC | 204 |
11 |
| Saint-Gobain Placo SAS | 139 |
10 |
| CertainTeed Gypsum, Inc. | 180 |
7 |
| Saint-Gobain Placo | 176 |
6 |
| ThyssenKrupp AG | 3086 |
6 |
| ThyssenKrupp Industrial Solutions AG | 729 |
6 |
| BPB Limited | 49 |
5 |
| Holcim Technology Ltd. | 868 |
5 |
| BASF SE | 19740 |
4 |
| Gold Bond Building Products, LLC | 162 |
4 |
| California Institute of Technology | 3884 |
3 |
| Continental Building Products Operating Company, LLC | 10 |
3 |
| Ecolab USA Inc. | 5190 |
3 |
| Henry Company, LLC | 206 |
3 |
| Roman Cement, LLC | 45 |
3 |
| Tokuyama Corporation | 1248 |
3 |
| Brimstone Energy Inc. | 8 |
3 |
| Other owners | 68 |