- All sections
- C - Chemistrymetallurgy
- C04B - Limemagnesiaslagcementscompositions thereof, e.g. mortars, concrete or like building materialsartificial stoneceramicsrefractoriestreatment of natural stone
- C04B 35/587 - Fine ceramics
Patent holdings for IPC class C04B 35/587
Total number of patents in this class: 233
10-year publication summary
|
5
|
4
|
9
|
8
|
11
|
22
|
18
|
21
|
24
|
30
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toshiba Materials Co., Ltd. | 664 |
50 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6270 |
30 |
| Denka Company Limited | 2566 |
22 |
| Toshiba Corporation | 12334 |
18 |
| Tokuyama Corporation | 1387 |
16 |
| Kyocera Corporation | 13800 |
6 |
| Agc, Inc. | 4827 |
6 |
| Ube Industries, Ltd. | 850 |
5 |
| NGK Insulators, Ltd. | 4949 |
4 |
| CARBO Ceramics Inc. | 237 |
4 |
| Niterra Co., Ltd. | 1271 |
4 |
| NTN Corporation | 4978 |
3 |
| Ube Corporation | 352 |
3 |
| Proterial, Ltd. | 843 |
3 |
| Sumitomo Electric Industries, Ltd. | 15455 |
2 |
| Hitachi Metals, Ltd. | 1982 |
2 |
| NGK Spark Plug Co., Ltd. | 893 |
2 |
| Amosense Co., Ltd. | 484 |
2 |
| Krosakiharima Corporation | 283 |
2 |
| Nippon Steel Corporation | 6231 |
2 |
| Other owners | 47 |