- 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 41/87 - Ceramics
Patent holdings for IPC class C04B 41/87
Total number of patents in this class: 910
10-year publication summary
|
58
|
56
|
84
|
94
|
63
|
68
|
59
|
74
|
81
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| General Electric Company | 17803 |
45 |
| Rtx Corporation | 9077 |
42 |
| NGK Insulators, Ltd. | 4791 |
30 |
| Applied Materials, Inc. | 17696 |
22 |
| Rolls-Royce Corporation | 1719 |
22 |
| Corning Incorporated | 10097 |
19 |
| Kyocera Corporation | 13327 |
17 |
| Toyo Tanso Co., Ltd. | 225 |
17 |
| Tungaloy Corporation | 495 |
17 |
| Centre National de La Recherche Scientifique | 10068 |
16 |
| Ibiden Co., Ltd. | 1735 |
15 |
| Rolls-Royce High Temperature Composites, Inc. | 136 |
15 |
| Straumann Holding AG | 563 |
14 |
| Sumitomo Electric Hardmetal Corp. | 1006 |
12 |
| IHI Corporation | 3356 |
12 |
| Siemens AG | 24572 |
11 |
| Honeywell International Inc. | 14007 |
11 |
| Mitsubishi Heavy Industries Aero Engines, Ltd. | 125 |
11 |
| Safran Ceramics | 390 |
11 |
| Saint-Gobain Centre de Recherches et d'Etudes Europeen | 485 |
11 |
| Other owners | 540 |