- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 59/00 - Obtaining rare earth metals
Patent holdings for IPC class C22B 59/00
Total number of patents in this class: 1129
10-year publication summary
|
91
|
64
|
75
|
79
|
67
|
86
|
77
|
88
|
99
|
69
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Metal Mining Co., Ltd. | 1764 |
59 |
| Hitachi, Ltd. | 15462 |
25 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10925 |
24 |
| Centre National de La Recherche Scientifique | 10395 |
23 |
| Shin-Etsu Chemical Co., Ltd. | 5615 |
15 |
| Shine Technologies, LLC | 133 |
15 |
| Purdue Research Foundation | 3576 |
14 |
| JX Nippon Mining & Metals Corporation | 1490 |
14 |
| Battelle Energy Alliance, LLC | 582 |
13 |
| Iowa State University Research Foundation, Inc. | 769 |
13 |
| Kyushu University, National University Corporation | 1648 |
13 |
| UT-Battelle, LLC | 1448 |
13 |
| Grirem Advanced Materials Co., Ltd. | 133 |
12 |
| Universite de Montpellier | 979 |
12 |
| Advanced Accelerator Applications S.A. | 38 |
11 |
| Siemens AG | 24552 |
10 |
| Hitachi Metals, Ltd. | 1988 |
10 |
| National Institute of Advanced Industrial Science and Technology | 3792 |
10 |
| The Penn State Research Foundation | 1513 |
10 |
| Lawrence Livermore National Security, LLC | 1929 |
9 |
| Other owners | 804 |