- All sections
- B - Performing operations; transporting
- 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: 349
10-year publication summary
|
24
|
28
|
28
|
31
|
25
|
28
|
25
|
32
|
20
|
12
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6652 |
31 |
| Gambro Lundia AB | 1383 |
30 |
| Asahi Kasei Medical Co., Ltd. | 308 |
17 |
| FUJIFILM Corporation | 27102 |
11 |
| 3m Innovative Properties Company | 18406 |
8 |
| Sumitomo Chemical Company, Limited | 8808 |
7 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
7 |
| Cornell University | 3036 |
7 |
| Fresenius Medical Care Deutschland GmbH | 2100 |
7 |
| Fresenius Medical Care Holdings, Inc. | 1354 |
7 |
| Toyo Boseki Kabushiki Kaisha | 472 |
7 |
| Ohio State Innovation Foundation | 1770 |
6 |
| Saudi Arabian Oil Company | 11322 |
6 |
| Toyobo Co., Ltd. | 2286 |
6 |
| W. L. Gore & Associates, Inc. | 2600 |
5 |
| FUJIFILM Manufacturing Europe B.V. | 271 |
5 |
| Membrane Technology and Research, Inc. | 92 |
5 |
| Pall Corporation | 392 |
5 |
| Yale University | 2204 |
5 |
| Solventum Intellectual Properties Company | 2681 |
5 |
| Other owners | 162 |