- All sections
- B - Performing operationstransporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistrytheir relevant apparatus
- B01J 20/289 - Phases chemically bonded to a substrate, e.g. to silica or to polymers bonded via a spacer
Patent holdings for IPC class B01J 20/289
Total number of patents in this class: 239
10-year publication summary
|
12
|
25
|
17
|
23
|
10
|
15
|
16
|
17
|
30
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cytiva BioProcess R&D AB | 302 |
36 |
| Waters Technologies Corporation | 1696 |
24 |
| GE Healthcare Bio-Sciences AB | 542 |
12 |
| Donaldson Company, Inc. | 1599 |
10 |
| Bio-Rad Laboratories, Inc. | 1615 |
9 |
| Dionex Corporation | 331 |
7 |
| Daicel Corporation | 2338 |
5 |
| Solventum Intellectual Properties Company | 3324 |
5 |
| Merck Patent GmbH | 5830 |
4 |
| Kaneka Corporation | 4519 |
4 |
| Cornell University | 3302 |
4 |
| Gambro Lundia AB | 1366 |
4 |
| Astrea UK Services Limited | 46 |
4 |
| CHRETO ApS | 12 |
3 |
| Repligen Corporation | 282 |
3 |
| Sartorius Stedim Biotech GmbH | 831 |
3 |
| W.R. Grace & Co.-conn. | 370 |
3 |
| GE Healthcare BioProcess R&D AB | 42 |
3 |
| F. Hoffmann-La Roche AG | 7930 |
2 |
| Hoffmann-La Roche Inc. | 3414 |
2 |
| Other owners | 92 |