- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 34/36 - Obtaining tungsten
Patent holdings for IPC class C22B 34/36
Total number of patents in this class: 86
10-year publication summary
4
|
10
|
9
|
5
|
1
|
6
|
6
|
7
|
11
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Korea Institute of Geoscience and Mineral Resources | 222 |
9 |
JX Nippon Mining & Metals Corporation | 1576 |
5 |
Central South University | 364 |
4 |
Novamont S.p.A. | 354 |
4 |
Kinaltek Pty. Ltd. | 6 |
3 |
Centre National de La Recherche Scientifique | 9632 |
2 |
Kyocera Corporation | 12735 |
2 |
Chevron U.S.A. Inc. | 3774 |
2 |
National Institute of Advanced Industrial Science and Technology | 3677 |
2 |
AB Ferrolegeringar | 6 |
2 |
Albemarle Netherlands B.V. | 93 |
2 |
A.L.M.T. Corp. | 209 |
2 |
Ecole Nationale Superieure de Chimie de Paris | 48 |
2 |
Japan New Metals Co., Ltd. | 5 |
2 |
Mitsubishi Materials Corporation | 2378 |
2 |
Paris Sciences et Lettres - Quartier Latin | 170 |
2 |
Avantium Knowledge Centre B.V. | 157 |
2 |
H.C. Starck Tungsten GmbH | 32 |
2 |
Jiangxi University of Science and Technology | 55 |
2 |
Sumitomo Electric Industries, Ltd. | 14131 |
1 |
Other owners | 32 |