- All sections
- B - Performing operations; transporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J 20/281 - Sorbents specially adapted for preparative, analytical or investigative chromatography
Patent holdings for IPC class B01J 20/281
Total number of patents in this class: 440
10-year publication summary
|
26
|
22
|
46
|
44
|
68
|
40
|
45
|
33
|
27
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bio-Rad Laboratories, Inc. | 1592 |
15 |
| Daicel Corporation | 2128 |
15 |
| JSR Corporation | 2476 |
14 |
| Showa Denko K.K. | 2539 |
12 |
| Waters Technologies Corporation | 1654 |
12 |
| Kaneka Corporation | 4445 |
11 |
| The Trustees of the University of Pennsylvania | 4122 |
11 |
| Shimadzu Corporation | 5791 |
10 |
| Mitsubishi Chemical Corporation | 4313 |
7 |
| Dionex Corporation | 320 |
7 |
| GE Healthcare Bio-Sciences AB | 570 |
7 |
| Tosoh Corporation | 1127 |
7 |
| Cytiva BioProcess R&D AB | 287 |
7 |
| Merck Patent GmbH | 5909 |
6 |
| EMD Millipore Corporation | 657 |
5 |
| Hoya Corporation | 2822 |
5 |
| Dow Global Technologies LLC | 10147 |
5 |
| The Government of the United States of America, as represented by the Secretary of the Navy | 1102 |
5 |
| Lab-on-a-bead AB | 15 |
5 |
| SPF Technologies LLC | 19 |
5 |
| Other owners | 269 |