- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 31/34 - Tungsten or molybdenum carbides
Patent holdings for IPC class C01B 31/34
Total number of patents in this class: 45
10-year publication summary
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kennametal Inc. | 1359 |
6 |
| PPG Industries Ohio, Inc. | 3350 |
3 |
| Toshiba Materials Co., Ltd. | 567 |
3 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6202 |
3 |
| JX Nippon Mining & Metals Corporation | 1464 |
2 |
| Nanyang Technological University | 2166 |
2 |
| National Oilwell DHT, L.P. | 120 |
2 |
| Baker Hughes Incorporated | 5033 |
1 |
| GM Global Technology Operations LLC | 15893 |
1 |
| Kyocera Corporation | 14263 |
1 |
| Dai Nippon Printing Co., Ltd. | 4218 |
1 |
| Smith International, Inc. | 700 |
1 |
| Ceratizit Austria Gesellschaft mbH | 117 |
1 |
| Drexel University | 1007 |
1 |
| Durum Verschleissschutz GmbH | 21 |
1 |
| Federal-Mogul Burscheid GmbH | 280 |
1 |
| Fukuoka Prefecture | 6 |
1 |
| H.C. Starck GmbH | 58 |
1 |
| Höganäs AB | 302 |
1 |
| The Industry & Academic Cooperation in Chungnam National University (IAC) | 488 |
1 |
| Other owners | 11 |