- All sections
- B - Performing operationstransporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistrytheir 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: 438
10-year publication summary
|
27
|
27
|
40
|
54
|
31
|
35
|
38
|
28
|
32
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Waters Technologies Corporation | 1692 |
36 |
| Cytiva BioProcess R&D AB | 305 |
36 |
| Daicel Corporation | 2336 |
18 |
| GE Healthcare Bio-Sciences AB | 544 |
13 |
| Merck Patent GmbH | 5873 |
9 |
| JSR Corporation | 2514 |
9 |
| Kaneka Corporation | 4506 |
8 |
| JNC Corporation | 1551 |
8 |
| Showa Denko K.K. | 2258 |
7 |
| Resonac Corporation | 2766 |
7 |
| EMD Millipore Corporation | 649 |
6 |
| Sartorius Stedim Biotech GmbH | 831 |
6 |
| Mitsubishi Chemical Corporation | 4489 |
5 |
| Shimadzu Corporation | 6151 |
5 |
| Puridify Ltd. | 17 |
5 |
| GE Healthcare BioProcess R&D AB | 42 |
5 |
| Hitachi Chemical Company, Ltd. | 2356 |
4 |
| Dow Global Technologies LLC | 10401 |
4 |
| Instraction GmbH | 49 |
4 |
| MIP Technologies AB | 6 |
4 |
| Other owners | 239 |