- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment 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: 190
10-year publication summary
|
7
|
13
|
11
|
20
|
12
|
8
|
9
|
13
|
18
|
13
|
| 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 | 419 |
16 |
| Dowa Metals & Mining Co., Ltd. | 41 |
9 |
| Yara International ASA | 855 |
9 |
| Techemet, LP, composed of Techemet Holdings, Inc., General Partner | 16 |
8 |
| Heraeus Precious Metals North America LLC | 8 |
7 |
| Umicore | 642 |
6 |
| Glencore Technology Pty Ltd | 51 |
5 |
| Northeastern University | 539 |
5 |
| Heraeus Precious Metals GmbH & Co. KG | 79 |
4 |
| JX Nippon Mining & Metals Corporation | 1489 |
3 |
| Tanaka Kikinzoku Kogyo K.K. | 583 |
3 |
| William Marsh Rice University | 1009 |
3 |
| Yeda Research and Development Co. Ltd. | 1341 |
3 |
| K.a.rasmussen | 3 |
3 |
| The University of Oslo (uio) | 3 |
3 |
| Corning Incorporated | 10259 |
2 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10923 |
2 |
| ALD Vacuum Technologies GmbH | 139 |
2 |
| Ecoloop GmbH | 22 |
2 |
| Newsouth Innovations Pty Limited | 593 |
2 |
| Other owners | 93 |