- 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: 849
10-year publication summary
|
45
|
58
|
56
|
84
|
94
|
63
|
66
|
58
|
71
|
22
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| General Electric Company | 18133 |
42 |
| Rtx Corporation | 8674 |
38 |
| NGK Insulators, Ltd. | 4589 |
29 |
| Applied Materials, Inc. | 16587 |
20 |
| Rolls-Royce Corporation | 1686 |
19 |
| Toyo Tanso Co., Ltd. | 227 |
17 |
| Tungaloy Corporation | 481 |
17 |
| Centre National de La Recherche Scientifique | 9632 |
15 |
| Kyocera Corporation | 12735 |
15 |
| Ibiden Co., Ltd. | 1724 |
15 |
| Corning Incorporated | 9932 |
14 |
| Rolls-Royce High Temperature Composites, Inc. | 129 |
14 |
| Straumann Holding AG | 507 |
14 |
| Sumitomo Electric Hardmetal Corp. | 969 |
12 |
| IHI Corporation | 3268 |
12 |
| Siemens AG | 24990 |
11 |
| Mitsubishi Heavy Industries Aero Engines, Ltd. | 121 |
11 |
| Toto Ltd. | 1096 |
11 |
| Honeywell International Inc. | 13799 |
10 |
| Safran Ceramics | 366 |
10 |
| Other owners | 503 |