- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment 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: 1060
10-year publication summary
|
91
|
64
|
75
|
79
|
67
|
86
|
77
|
86
|
98
|
7
|
| 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. | 1730 |
58 |
| Hitachi, Ltd. | 15226 |
25 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10692 |
24 |
| Centre National de La Recherche Scientifique | 10102 |
21 |
| Shin-Etsu Chemical Co., Ltd. | 5446 |
15 |
| JX Nippon Mining & Metals Corporation | 1524 |
14 |
| Battelle Energy Alliance, LLC | 568 |
13 |
| Purdue Research Foundation | 3477 |
13 |
| Kyushu University, National University Corporation | 1627 |
13 |
| UT-Battelle, LLC | 1391 |
13 |
| Universite de Montpellier | 960 |
12 |
| National Institute of Advanced Industrial Science and Technology | 3736 |
11 |
| Grirem Advanced Materials Co., Ltd. | 127 |
11 |
| Iowa State University Research Foundation, Inc. | 743 |
11 |
| Shine Technologies, LLC | 114 |
11 |
| Siemens AG | 24565 |
10 |
| Hitachi Metals, Ltd. | 2021 |
10 |
| Lawrence Livermore National Security, LLC | 1882 |
9 |
| Battelle Memorial Institute | 2419 |
9 |
| Obshchestvo S Ogranichennoy Otvetstvennost'yu "obedinennaya Kompaniya RUSAL Inzhenerno-tekhnologicheskiy Tsentr" | 148 |
9 |
| Other owners | 748 |