- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
Patent holdings for IPC class C22B 3/26
Total number of patents in this class: 604
10-year publication summary
33
|
48
|
30
|
50
|
32
|
27
|
42
|
38
|
47
|
21
|
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 |
57 |
JX Nippon Mining & Metals Corporation | 1576 |
29 |
Kyushu University, National University Corporation | 1572 |
25 |
Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
22 |
Centre National de La Recherche Scientifique | 9632 |
15 |
Freeport Minerals Corporation | 80 |
15 |
Metso Outotec Finland Oy | 795 |
14 |
Universite de Montpellier | 920 |
11 |
Outotec (Finland) Oy | 491 |
10 |
Tenova Advanced Technologies Ltd. | 16 |
9 |
Asaka Riken Co., Ltd. | 35 |
7 |
Ecole Nationale Superieure de Chimie de Montpellier | 167 |
7 |
Outotec Oyj | 318 |
7 |
Shin-Etsu Chemical Co., Ltd. | 5132 |
6 |
Metso Minerals Oy | 152 |
6 |
Excir Works Corp. | 28 |
6 |
Ecopro Materials, Co., Ltd. | 17 |
6 |
University of South Australia | 194 |
5 |
UT-Battelle, LLC | 1333 |
5 |
Orf Technologies Inc. | 9 |
5 |
Other owners | 337 |