- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 32/949 - Tungsten or molybdenum carbides
Patent holdings for IPC class C01B 32/949
Total number of patents in this class: 77
10-year publication summary
|
1
|
2
|
10
|
9
|
11
|
1
|
15
|
10
|
10
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kyocera Corporation | 13831 |
8 |
| Drexel University | 991 |
7 |
| A.L.M.T. Corp. | 229 |
6 |
| Sumitomo Electric Industries, Ltd. | 15495 |
4 |
| William Marsh Rice University | 1009 |
4 |
| H.C. Starck Tungsten GmbH | 38 |
4 |
| DIC Corporation | 3802 |
3 |
| Ganzhou Nonferrous Metallurgy Research Institute Co., Ltd. | 13 |
3 |
| The Government of the United States of America, as represented by the Secretary of the Navy | 1301 |
2 |
| Höganäs AB | 307 |
2 |
| Oerlikon Metco (US) Inc. | 206 |
2 |
| Nulife Greentech Inc. | 11 |
2 |
| Bestr Co., Ltd. | 2 |
2 |
| Hoganas AB | 2 |
2 |
| Murata Manufacturing Co., Ltd. | 24542 |
1 |
| Shin-Etsu Chemical Co., Ltd. | 5662 |
1 |
| ExxonMobil Chemical Patents Inc. | 3977 |
1 |
| Beijing University of Technology | 492 |
1 |
| Brown University | 648 |
1 |
| Central South University | 438 |
1 |
| Other owners | 20 |