- All sections
- B - Performing operations; transporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistry; their 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: 214
10-year publication summary
|
18
|
12
|
25
|
17
|
23
|
10
|
15
|
15
|
15
|
10
|
| 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 |
30 |
| Waters Technologies Corporation | 1654 |
15 |
| GE Healthcare Bio-Sciences AB | 570 |
13 |
| Bio-Rad Laboratories, Inc. | 1592 |
7 |
| Dionex Corporation | 320 |
7 |
| Merck Patent GmbH | 5909 |
5 |
| Solventum Intellectual Properties Company | 2681 |
5 |
| Kaneka Corporation | 4445 |
4 |
| Cornell University | 3036 |
4 |
| Daicel Corporation | 2128 |
4 |
| Gambro Lundia AB | 1383 |
4 |
| CHRETO ApS | 11 |
3 |
| Repligen Corporation | 258 |
3 |
| Sartorius Stedim Biotech GmbH | 774 |
3 |
| W.R. Grace & Co.-conn. | 372 |
3 |
| GE Healthcare BioProcess R&D AB | 42 |
3 |
| F. Hoffmann-La Roche AG | 7958 |
2 |
| Hoffmann-La Roche Inc. | 3060 |
2 |
| Roche Diagnostics GmbH | 2745 |
2 |
| 3m Innovative Properties Company | 18406 |
2 |
| Other owners | 93 |