- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 32/28 - After-treatment, e.g. purification, irradiation, separation or recovery
Patent holdings for IPC class C01B 32/28
Total number of patents in this class: 272
10-year publication summary
|
6
|
12
|
21
|
17
|
30
|
28
|
38
|
34
|
22
|
16
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Daicel Corporation | 2387 |
62 |
| Schlumberger Technology Corporation | 10930 |
12 |
| Kyoto University | 2828 |
8 |
| Schlumberger Canada Limited | 7383 |
6 |
| National Institute of Advanced Industrial Science and Technology | 3797 |
6 |
| Diamond Innovations, Inc. | 235 |
6 |
| Sumitomo Electric Industries, Ltd. | 15668 |
5 |
| Element Six Technologies Limited | 200 |
5 |
| US Synthetic Corporation | 613 |
5 |
| Element Six (UK) Limited | 219 |
5 |
| S.W. Chemicals Co. Ltd. | 6 |
5 |
| Schlumberger Technology B.v. | 5191 |
4 |
| Carbodeon Ltd Oy | 27 |
4 |
| Services Petroliers Schlumberger | 5838 |
4 |
| The University of Warwick | 248 |
4 |
| Halliburton Energy Services, Inc. | 20991 |
3 |
| The Regents of the University of California | 20153 |
3 |
| Applied Materials, Inc. | 19005 |
3 |
| Kyushu Institute of Technology | 292 |
3 |
| IIA Technologies Pte. Ltd. | 14 |
3 |
| Other owners | 116 |