- 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: 977
10-year publication summary
79
|
91
|
64
|
75
|
79
|
67
|
86
|
77
|
85
|
32
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Sumitomo Metal Mining Co., Ltd. | 1670 |
60 |
Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
22 |
Centre National de La Recherche Scientifique | 9632 |
19 |
Hitachi Metals, Ltd. | 2175 |
17 |
Shin-Etsu Chemical Co., Ltd. | 5132 |
15 |
JX Nippon Mining & Metals Corporation | 1576 |
14 |
Hitachi, Ltd. | 16452 |
13 |
Kyushu University, National University Corporation | 1572 |
13 |
Purdue Research Foundation | 3277 |
12 |
UT-Battelle, LLC | 1333 |
12 |
National Institute of Advanced Industrial Science and Technology | 3677 |
11 |
Battelle Energy Alliance, LLC | 569 |
11 |
Grirem Advanced Materials Co., Ltd. | 114 |
11 |
Iowa State University Research Foundation, Inc. | 685 |
11 |
Siemens AG | 24990 |
10 |
Universite de Montpellier | 920 |
10 |
Obshchestvo S Ogranichennoy Otvetstvennost'yu "obedinennaya Kompaniya RUSAL Inzhenerno-tekhnologicheskiy Tsentr" | 142 |
9 |
China ENFI Engineering Corp. | 91 |
9 |
Shine Technologies, LLC | 92 |
8 |
Lawrence Livermore National Security, LLC | 1834 |
7 |
Other owners | 683 |