- 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: 390
10-year publication summary
|
26
|
25
|
28
|
24
|
28
|
25
|
33
|
20
|
32
|
19
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7006 |
33 |
| Gambro Lundia AB | 1373 |
32 |
| Asahi Kasei Medical Co., Ltd. | 264 |
15 |
| FUJIFILM Corporation | 29713 |
12 |
| Cornell University | 3341 |
9 |
| Fresenius Medical Care Deutschland GmbH | 2178 |
9 |
| Toyobo Co., Ltd. | 2464 |
9 |
| 3m Innovative Properties Company | 17762 |
8 |
| Fresenius Medical Care Holdings, Inc. | 1423 |
8 |
| Saudi Arabian Oil Company | 13442 |
8 |
| Sumitomo Chemical Company, Limited | 9092 |
7 |
| Asahi Kasei Kabushiki Kaisha | 2705 |
7 |
| Ohio State Innovation Foundation | 2191 |
7 |
| W. L. Gore & Associates, Inc. | 2733 |
6 |
| King Fahd University of Petroleum and Minerals | 1311 |
6 |
| Toyo Boseki Kabushiki Kaisha | 338 |
6 |
| Yale University | 2421 |
6 |
| Compact Membrane Systems, Inc. | 52 |
5 |
| FUJIFILM Manufacturing Europe B.V. | 259 |
5 |
| Membrane Technology and Research, Inc. | 92 |
5 |
| Other owners | 187 |