- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 71/28 - Polymers of vinyl aromatic compounds
Patent holdings for IPC class B01D 71/28
Total number of patents in this class: 270
10-year publication summary
|
13
|
23
|
19
|
24
|
35
|
32
|
22
|
19
|
21
|
9
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 27102 |
22 |
| Cornell University | 3036 |
8 |
| 3m Innovative Properties Company | 18406 |
6 |
| Sumitomo Chemical Company, Limited | 8808 |
6 |
| Uop LLC | 4083 |
6 |
| Toray Industries, Inc. | 6652 |
6 |
| Astom Corporation | 31 |
6 |
| Gambro Lundia AB | 1383 |
6 |
| FUJIFILM Manufacturing Europe B.V. | 271 |
5 |
| The Regents of the University of Colorado, a body corporate | 2430 |
5 |
| Yale University | 2204 |
5 |
| The Regents of the University of California | 18943 |
4 |
| Nitto Denko Corporation | 7879 |
4 |
| W. L. Gore & Associates, Inc. | 2600 |
4 |
| Rensselaer Polytechnic Institute | 776 |
4 |
| University of Washington | 2157 |
4 |
| International Business Machines Corporation | 60644 |
3 |
| Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation | 297 |
3 |
| China Petroleum & Chemical Corporation | 1623 |
3 |
| Council of Scientific & Industrial Research | 1397 |
3 |
| Other owners | 157 |