- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action
Patent holdings for IPC class C22B 9/02
Total number of patents in this class: 327
10-year publication summary
|
20
|
20
|
23
|
17
|
15
|
19
|
26
|
29
|
24
|
27
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsui Mining & Smelting Co., Ltd. | 1059 |
14 |
| Pyrotek, Inc. | 203 |
14 |
| Shine Technologies, LLC | 173 |
11 |
| Southwire Company, LLC | 808 |
10 |
| JX Nippon Mining & Metals Corporation | 1451 |
8 |
| Kunming University of Science and Technology | 249 |
8 |
| Nant Holdings IP, LLC | 857 |
8 |
| Norsk Hydro ASA | 244 |
8 |
| Constellium Issoire | 230 |
6 |
| Metallo Belgium | 50 |
6 |
| Entegris, Inc. | 2046 |
5 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2842 |
5 |
| Alcoa Canada Co | 6 |
4 |
| Exentis Knowledge GmbH | 72 |
4 |
| Rtx Corporation | 10264 |
4 |
| Hitachi, Ltd. | 16248 |
3 |
| GM Global Technology Operations LLC | 16306 |
3 |
| Showa Denko K.K. | 2044 |
3 |
| Toray Industries, Inc. | 7164 |
3 |
| Eth Zurich | 1338 |
3 |
| Other owners | 197 |