- All sections
- C - Chemistrymetallurgy
- C04B - Limemagnesiaslagcementscompositions thereof, e.g. mortars, concrete or like building materialsartificial stoneceramicsrefractoriestreatment of natural stone
- C04B 41/87 - Ceramics
Patent holdings for IPC class C04B 41/87
Total number of patents in this class: 932
10-year publication summary
|
58
|
56
|
85
|
94
|
64
|
68
|
60
|
75
|
83
|
33
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9297 |
46 |
| General Electric Company | 13829 |
45 |
| NGK Insulators, Ltd. | 4920 |
30 |
| Applied Materials, Inc. | 18406 |
22 |
| Corning Incorporated | 10240 |
22 |
| Rolls-Royce Corporation | 1726 |
22 |
| Kyocera Corporation | 13689 |
18 |
| Tungaloy Corporation | 503 |
17 |
| Centre National de La Recherche Scientifique | 10321 |
16 |
| Toyo Tanso Co., Ltd. | 224 |
16 |
| Ibiden Co., Ltd. | 1735 |
15 |
| Rolls-Royce High Temperature Composites, Inc. | 133 |
15 |
| Honeywell International Inc. | 13564 |
14 |
| Straumann Holding AG | 579 |
14 |
| Saint-Gobain Centre de Recherches et d'Etudes Europeen | 490 |
13 |
| Sumitomo Electric Hardmetal Corp. | 1013 |
12 |
| Safran Ceramics | 407 |
12 |
| Toto Ltd. | 1163 |
12 |
| Siemens AG | 24561 |
11 |
| Shin-Etsu Chemical Co., Ltd. | 5598 |
11 |
| Other owners | 549 |