- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 34/36 - Obtaining tungsten
Patent holdings for IPC class C22B 34/36
Total number of patents in this class: 91
10-year publication summary
|
10
|
9
|
5
|
1
|
6
|
6
|
7
|
11
|
5
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Korea Institute of Geoscience and Mineral Resources | 238 |
9 |
| JX Nippon Mining & Metals Corporation | 1490 |
5 |
| Novamont S.p.A. | 351 |
4 |
| Kinaltek Pty. Ltd. | 7 |
4 |
| Kyocera Corporation | 13721 |
3 |
| Central South University | 430 |
3 |
| Chevron U.S.A. Inc. | 3939 |
2 |
| National Institute of Advanced Industrial Science and Technology | 3792 |
2 |
| AB Ferrolegeringar | 6 |
2 |
| A.L.M.T. Corp. | 226 |
2 |
| Ecole Nationale Superieure de Chimie de Paris | 53 |
2 |
| Japan New Metals Co., Ltd. | 5 |
2 |
| Mitsubishi Materials Corporation | 2435 |
2 |
| Paris Sciences et Lettres - Quartier Latin | 209 |
2 |
| Avantium Knowledge Centre B.V. | 192 |
2 |
| H.C. Starck Tungsten GmbH | 38 |
2 |
| Jiangxi University of Science and Technology | 62 |
2 |
| Hubei Green Tungsten Co., Ltd. | 3 |
2 |
| Centre National de La Recherche Scientifique | 10395 |
1 |
| Sumitomo Electric Industries, Ltd. | 15391 |
1 |
| Other owners | 37 |