- 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: 467
10-year publication summary
|
26
|
40
|
53
|
31
|
35
|
37
|
29
|
34
|
21
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cytiva BioProcess R&D AB | 315 |
40 |
| Waters Technologies Corporation | 1769 |
37 |
| Daicel Corporation | 2443 |
19 |
| GE Healthcare Bio-Sciences AB | 526 |
12 |
| JNC Corporation | 1519 |
11 |
| Merck Patent GmbH | 5741 |
9 |
| JSR Corporation | 2557 |
9 |
| Kaneka Corporation | 4636 |
8 |
| Resonac Corporation | 3130 |
8 |
| Mitsubishi Chemical Corporation | 4684 |
7 |
| Showa Denko K.K. | 2126 |
6 |
| Sartorius Stedim Biotech GmbH | 869 |
6 |
| EMD Millipore Corporation | 641 |
5 |
| Shimadzu Corporation | 6289 |
5 |
| Puridify Ltd. | 17 |
5 |
| GE Healthcare BioProcess R&D AB | 42 |
5 |
| LG Chem, Ltd. | 17778 |
4 |
| Hitachi Chemical Company, Ltd. | 2290 |
4 |
| Dow Global Technologies LLC | 10740 |
4 |
| Agilent Technologies, Inc. | 2653 |
4 |
| Other owners | 259 |