- 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: 962
10-year publication summary
|
50
|
49
|
77
|
83
|
63
|
68
|
61
|
64
|
83
|
64
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9495 |
52 |
| General Electric Company | 13856 |
50 |
| NGK Insulators, Ltd. | 5115 |
30 |
| Kyocera Corporation | 13997 |
24 |
| Applied Materials, Inc. | 19005 |
22 |
| Corning Incorporated | 10336 |
22 |
| Rolls-Royce Corporation | 1760 |
22 |
| Tungaloy Corporation | 514 |
17 |
| Centre National de La Recherche Scientifique | 10595 |
16 |
| Toyo Tanso Co., Ltd. | 222 |
16 |
| Ibiden Co., Ltd. | 1720 |
15 |
| Rolls-Royce High Temperature Composites, Inc. | 134 |
15 |
| Honeywell International Inc. | 13557 |
14 |
| Saint-Gobain Centre de Recherches et d'Etudes Europeen | 491 |
14 |
| Straumann Holding AG | 595 |
14 |
| Toto Ltd. | 1217 |
13 |
| Sumitomo Electric Hardmetal Corp. | 1038 |
12 |
| IHI Corporation | 3453 |
12 |
| Safran Ceramics | 414 |
12 |
| Siemens AG | 24346 |
11 |
| Other owners | 559 |