- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds 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: 231
10-year publication summary
6
|
6
|
12
|
21
|
17
|
33
|
27
|
39
|
35
|
8
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Daicel Corporation | 2128 |
56 |
Schlumberger Technology Corporation | 9690 |
7 |
National Institute of Advanced Industrial Science and Technology | 3677 |
6 |
Element Six Technologies Limited | 179 |
5 |
Kyoto University | 2732 |
5 |
US Synthetic Corporation | 601 |
5 |
Schlumberger Canada Limited | 6913 |
4 |
Schlumberger Technology B.v. | 4951 |
4 |
Sumitomo Electric Industries, Ltd. | 14131 |
4 |
Carbodeon Ltd Oy | 28 |
4 |
Services Petroliers Schlumberger | 5426 |
4 |
The University of Warwick | 242 |
4 |
Element Six (UK) Limited | 178 |
4 |
Halliburton Energy Services, Inc. | 20165 |
3 |
The Regents of the University of California | 18943 |
3 |
Applied Materials, Inc. | 16587 |
3 |
Diamond Innovations, Inc. | 241 |
3 |
Kyushu Institute of Technology | 319 |
3 |
IIA Technologies Pte. Ltd. | 15 |
3 |
S.W. Chemicals Co. Ltd. | 3 |
3 |
Other owners | 98 |