- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/44 - Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups
Patent holdings for IPC class B01D 71/44
Total number of patents in this class: 416
10-year publication summary
|
28
|
31
|
25
|
29
|
25
|
36
|
23
|
32
|
24
|
14
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7113 |
33 |
| Gambro Lundia AB | 1389 |
33 |
| Asahi Kasei Medical Co., Ltd. | 232 |
15 |
| Toyobo Co., Ltd. | 2535 |
12 |
| FUJIFILM Corporation | 30514 |
11 |
| Fresenius Medical Care Deutschland GmbH | 2236 |
10 |
| Saudi Arabian Oil Company | 14235 |
10 |
| Cornell University | 3425 |
9 |
| 3m Innovative Properties Company | 17478 |
8 |
| Ohio State Innovation Foundation | 2375 |
8 |
| Sumitomo Chemical Company, Limited | 9016 |
7 |
| Asahi Kasei Kabushiki Kaisha | 2833 |
7 |
| Fresenius Medical Care Holdings, Inc. | 1426 |
7 |
| W. L. Gore & Associates, Inc. | 2720 |
6 |
| Compact Membrane Systems, Inc. | 56 |
6 |
| King Fahd University of Petroleum and Minerals | 1572 |
6 |
| Yale University | 2533 |
6 |
| Solventum Intellectual Properties Company | 3415 |
6 |
| Nitto Denko Corporation | 8536 |
5 |
| Aramco Services Company | 4195 |
5 |
| Other owners | 206 |