- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/40 - Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters
Patent holdings for IPC class B01D 71/40
Total number of patents in this class: 529
10-year publication summary
|
45
|
33
|
56
|
42
|
44
|
25
|
34
|
27
|
25
|
25
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 30514 |
46 |
| Toray Industries, Inc. | 7113 |
27 |
| FUJIFILM Manufacturing Europe B.V. | 221 |
25 |
| Sumitomo Chemical Company, Limited | 9016 |
17 |
| Renaissance Energy Research Corporation | 63 |
16 |
| Nitto Denko Corporation | 8536 |
13 |
| FUJIFILM Imaging Colorants Limited | 194 |
13 |
| Trustees of Tufts College | 976 |
12 |
| 3m Innovative Properties Company | 17478 |
10 |
| Solventum Intellectual Properties Company | 3415 |
9 |
| Mitsubishi Chemical Corporation | 4724 |
8 |
| Dow Global Technologies LLC | 10944 |
7 |
| Gambro Lundia AB | 1389 |
7 |
| Asahi Kasei Medical Co., Ltd. | 232 |
6 |
| California Institute of Technology | 4040 |
5 |
| Korea Advanced Institute of Science and Technology | 4664 |
5 |
| Arkema France | 4242 |
5 |
| Arkema Inc. | 1061 |
5 |
| Merck Millipore Ltd. | 38 |
5 |
| BASF SE | 21303 |
4 |
| Other owners | 284 |