- 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
|
2
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kennametal Inc. | 1391 |
6 |
| PPG Industries Ohio, Inc. | 3439 |
3 |
| Toshiba Materials Co., Ltd. | 632 |
3 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6258 |
3 |
| JX Nippon Mining & Metals Corporation | 1523 |
2 |
| Nanyang Technological University | 1907 |
2 |
| National Oilwell DHT, L.P. | 147 |
2 |
| Baker Hughes Incorporated | 5491 |
1 |
| GM Global Technology Operations LLC | 14327 |
1 |
| Kyocera Corporation | 13409 |
1 |
| Dai Nippon Printing Co., Ltd. | 3989 |
1 |
| Smith International, Inc. | 738 |
1 |
| Ceratizit Austria Gesellschaft mbH | 121 |
1 |
| Drexel University | 973 |
1 |
| Durum Verschleissschutz GmbH | 21 |
1 |
| Federal-Mogul Burscheid GmbH | 282 |
1 |
| Fukuoka Prefecture | 7 |
1 |
| H.C. Starck GmbH | 74 |
1 |
| Höganäs AB | 320 |
1 |
| The Industry & Academic Cooperation in Chungnam National University (IAC) | 435 |
1 |
| Other owners | 11 |