- 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: 489
10-year publication summary
|
33
|
45
|
33
|
56
|
42
|
42
|
25
|
32
|
27
|
16
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 29228 |
46 |
| FUJIFILM Manufacturing Europe B.V. | 268 |
29 |
| Toray Industries, Inc. | 6891 |
27 |
| Sumitomo Chemical Company, Limited | 9009 |
17 |
| Renaissance Energy Research Corporation | 60 |
16 |
| FUJIFILM Imaging Colorants Limited | 219 |
13 |
| Nitto Denko Corporation | 8182 |
12 |
| 3m Innovative Properties Company | 17849 |
10 |
| Solventum Intellectual Properties Company | 3309 |
9 |
| Mitsubishi Chemical Corporation | 4485 |
8 |
| Asahi Kasei Medical Co., Ltd. | 295 |
8 |
| Trustees of Tufts College | 859 |
8 |
| Dow Global Technologies LLC | 10354 |
7 |
| Gambro Lundia AB | 1365 |
7 |
| California Institute of Technology | 3967 |
5 |
| Korea Advanced Institute of Science and Technology | 4332 |
5 |
| Arkema France | 3987 |
5 |
| Arkema Inc. | 1055 |
5 |
| Merck Millipore Ltd. | 35 |
5 |
| BASF SE | 20777 |
4 |
| Other owners | 243 |