- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 31/34 - Tungsten or molybdenum carbides
Patent holdings for IPC class C01B 31/34
Total number of patents in this class: 51
10-year publication summary
|
8
|
2
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kennametal Inc. | 1380 |
6 |
| PPG Industries Ohio, Inc. | 3430 |
3 |
| Toshiba Materials Co., Ltd. | 600 |
3 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
3 |
| GM Global Technology Operations LLC | 13620 |
2 |
| Diamond Innovations, Inc. | 241 |
2 |
| JX Nippon Mining & Metals Corporation | 1576 |
2 |
| Nanyang Technological University | 1739 |
2 |
| National Oilwell DHT, L.P. | 159 |
2 |
| Baker Hughes Incorporated | 5689 |
1 |
| Kyocera Corporation | 12735 |
1 |
| Dai Nippon Printing Co., Ltd. | 3891 |
1 |
| Smith International, Inc. | 761 |
1 |
| Ceratizit Austria Gesellschaft mbH | 118 |
1 |
| Columbian Chemicals Company | 11 |
1 |
| Drexel University | 951 |
1 |
| Durum Verschleissschutz GmbH | 21 |
1 |
| Federal-Mogul Burscheid GmbH | 284 |
1 |
| Fukuoka Prefecture | 7 |
1 |
| H.C. Starck GmbH | 80 |
1 |
| Other owners | 15 |