- All sections
- B - Performing operationstransporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistrytheir 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: 449
10-year publication summary
|
21
|
46
|
41
|
67
|
37
|
38
|
34
|
27
|
16
|
24
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JSR Corporation | 2537 |
18 |
| Daicel Corporation | 2405 |
18 |
| Bio-Rad Laboratories, Inc. | 1619 |
15 |
| Waters Technologies Corporation | 1743 |
13 |
| Showa Denko K.K. | 2180 |
12 |
| The Trustees of the University of Pennsylvania | 4376 |
12 |
| Shimadzu Corporation | 6229 |
11 |
| Kaneka Corporation | 4605 |
11 |
| Tosoh Corporation | 1334 |
8 |
| Mitsubishi Chemical Corporation | 4604 |
7 |
| Dionex Corporation | 325 |
7 |
| Hoya Corporation | 2763 |
6 |
| SPF Technologies LLC | 21 |
6 |
| Cytiva BioProcess R&D AB | 312 |
6 |
| Merck Patent GmbH | 5755 |
5 |
| Dow Global Technologies LLC | 10518 |
5 |
| The Government of the United States of America, as represented by the Secretary of the Navy | 1365 |
5 |
| Lab-on-a-bead AB | 13 |
5 |
| Mercy BioAnalytics, Inc. | 51 |
5 |
| EMD Millipore Corporation | 642 |
4 |
| Other owners | 270 |