- 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: 1142
10-year publication summary
|
76
|
54
|
69
|
72
|
60
|
74
|
71
|
80
|
98
|
80
|
| 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. | 1782 |
59 |
| Hitachi, Ltd. | 15531 |
25 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10930 |
24 |
| Centre National de La Recherche Scientifique | 10476 |
23 |
| Shine Technologies, LLC | 138 |
16 |
| Shin-Etsu Chemical Co., Ltd. | 5676 |
15 |
| Purdue Research Foundation | 3646 |
14 |
| JX Nippon Mining & Metals Corporation | 1488 |
14 |
| Battelle Energy Alliance, LLC | 586 |
13 |
| Grirem Advanced Materials Co., Ltd. | 134 |
13 |
| Iowa State University Research Foundation, Inc. | 782 |
13 |
| Kyushu University, National University Corporation | 1658 |
13 |
| UT-Battelle, LLC | 1463 |
13 |
| Universite de Montpellier | 991 |
12 |
| Advanced Accelerator Applications S.A. | 40 |
11 |
| Siemens AG | 24436 |
10 |
| Hitachi Metals, Ltd. | 1976 |
10 |
| National Institute of Advanced Industrial Science and Technology | 3792 |
10 |
| The Penn State Research Foundation | 1537 |
10 |
| Lawrence Livermore National Security, LLC | 1942 |
9 |
| Other owners | 815 |