- 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: 294
10-year publication summary
|
20
|
20
|
20
|
23
|
17
|
15
|
18
|
26
|
26
|
14
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsui Mining & Smelting Co., Ltd. | 1472 |
16 |
| Pyrotek, Inc. | 201 |
13 |
| Southwire Company, LLC | 782 |
10 |
| JX Nippon Mining & Metals Corporation | 1490 |
8 |
| Kunming University of Science and Technology | 175 |
8 |
| Shine Technologies, LLC | 133 |
8 |
| Norsk Hydro ASA | 262 |
7 |
| Constellium Issoire | 219 |
6 |
| Metallo Belgium | 53 |
6 |
| Entegris, Inc. | 1861 |
5 |
| Nant Holdings IP, LLC | 739 |
5 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2876 |
4 |
| Alcoa Canada Co | 6 |
4 |
| Exentis Knowledge GmbH | 51 |
4 |
| Hitachi, Ltd. | 15462 |
3 |
| GM Global Technology Operations LLC | 14926 |
3 |
| Showa Denko K.K. | 2266 |
3 |
| Aleris Switzerland GmbH | 4 |
3 |
| Eth Zurich | 1269 |
3 |
| Foseco International Limited | 212 |
3 |
| Other owners | 172 |