- 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: 250
10-year publication summary
|
4
|
9
|
8
|
11
|
22
|
18
|
22
|
24
|
48
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toshiba Materials Co., Ltd. | 564 |
46 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6181 |
32 |
| Denka Company Limited | 2712 |
26 |
| Tokuyama Corporation | 1474 |
18 |
| Niterra Materials Co., Ltd. | 131 |
13 |
| Kyocera Corporation | 14335 |
7 |
| Agc, Inc. | 5502 |
7 |
| Ube Corporation | 448 |
7 |
| Niterra Co., Ltd. | 1399 |
7 |
| NGK Insulators, Ltd. | 5232 |
6 |
| Ube Industries, Ltd. | 770 |
5 |
| NTN Corporation | 4915 |
4 |
| CARBO Ceramics Inc. | 176 |
4 |
| Proterial, Ltd. | 933 |
3 |
| Sumitomo Electric Industries, Ltd. | 16305 |
2 |
| Hitachi Metals, Ltd. | 1900 |
2 |
| NGK Spark Plug Co., Ltd. | 875 |
2 |
| Amosense Co., Ltd. | 501 |
2 |
| Krosakiharima Corporation | 296 |
2 |
| Nippon Steel Corporation | 6843 |
2 |
| Other owners | 53 |