- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 11/02 - Obtaining noble metals by dry processes
Patent holdings for IPC class C22B 11/02
Total number of patents in this class: 172
10-year publication summary
|
7
|
13
|
11
|
20
|
12
|
8
|
9
|
11
|
16
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Heraeus Deutschland GmbH & Co. KG | 437 |
15 |
| Dowa Metals & Mining Co., Ltd. | 43 |
9 |
| Techemet, LP, composed of Techemet Holdings, Inc., General Partner | 17 |
9 |
| Heraeus Precious Metals North America LLC | 8 |
7 |
| Umicore | 598 |
6 |
| Northeastern University | 522 |
5 |
| Yara International ASA | 798 |
4 |
| Glencore Technology Pty Ltd | 48 |
3 |
| Heraeus Precious Metals GmbH & Co. KG | 61 |
3 |
| JX Nippon Mining & Metals Corporation | 1524 |
3 |
| Tanaka Kikinzoku Kogyo K.K. | 589 |
3 |
| William Marsh Rice University | 973 |
3 |
| Yeda Research and Development Co. Ltd. | 1302 |
3 |
| Corning Incorporated | 10125 |
2 |
| ALD Vacuum Technologies GmbH | 140 |
2 |
| Ecoloop GmbH | 24 |
2 |
| Newsouth Innovations Pty Limited | 590 |
2 |
| Nippon PGM Co., Ltd. | 5 |
2 |
| Precious Metals Recovery Pty Ltd | 5 |
2 |
| University of Fukui | 78 |
2 |
| Other owners | 85 |