- All sections
- B - Performing operations; transporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J 20/285 - Porous sorbents based on polymers
Patent holdings for IPC class B01J 20/285
Total number of patents in this class: 409
10-year publication summary
|
25
|
27
|
27
|
40
|
54
|
31
|
31
|
35
|
27
|
12
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cytiva BioProcess R&D AB | 287 |
35 |
| Waters Technologies Corporation | 1654 |
33 |
| Daicel Corporation | 2128 |
17 |
| GE Healthcare Bio-Sciences AB | 570 |
13 |
| Merck Patent GmbH | 5909 |
9 |
| Kaneka Corporation | 4445 |
8 |
| Showa Denko K.K. | 2539 |
7 |
| JSR Corporation | 2476 |
7 |
| EMD Millipore Corporation | 657 |
6 |
| Sartorius Stedim Biotech GmbH | 774 |
6 |
| Resonac Corporation | 2233 |
6 |
| Hitachi Chemical Company, Ltd. | 2455 |
5 |
| Mitsubishi Chemical Corporation | 4313 |
5 |
| Shimadzu Corporation | 5791 |
5 |
| JNC Corporation | 1527 |
5 |
| Puridify Ltd. | 16 |
5 |
| GE Healthcare BioProcess R&D AB | 42 |
5 |
| Dow Global Technologies LLC | 10147 |
4 |
| Instraction GmbH | 45 |
4 |
| MIP Technologies AB | 10 |
4 |
| Other owners | 220 |