- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 15/22 - Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the construction of the column
Patent holdings for IPC class B01D 15/22
Total number of patents in this class: 597
10-year publication summary
|
55
|
49
|
50
|
55
|
46
|
46
|
52
|
40
|
56
|
22
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Waters Technologies Corporation | 1705 |
51 |
| Cytiva Sweden AB | 763 |
35 |
| Agilent Technologies, Inc. | 2638 |
33 |
| Cytiva BioProcess R&D AB | 309 |
26 |
| GE Healthcare Bio-Sciences AB | 540 |
19 |
| W. L. Gore & Associates, Inc. | 2722 |
14 |
| IDEX Health & Science LLC | 207 |
11 |
| Biotage AB | 93 |
9 |
| Tosoh Bioscience LLC | 40 |
9 |
| SPF Technologies LLC | 21 |
8 |
| Pharmafluidics NV | 29 |
7 |
| Bio-Rad Laboratories, Inc. | 1617 |
6 |
| Douglas T. Gjerde | 11 |
6 |
| Regeneron Pharmaceuticals, Inc. | 4335 |
6 |
| Shimadzu Corporation | 6191 |
5 |
| Altria Client Services LLC | 2218 |
5 |
| Sartorius Stedim Biotech GmbH | 840 |
5 |
| F. Hoffmann-La Roche AG | 7947 |
4 |
| Merck Patent GmbH | 5768 |
4 |
| Centre National de La Recherche Scientifique | 10531 |
4 |
| Other owners | 330 |