- 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: 490
10-year publication summary
33
|
45
|
33
|
56
|
42
|
42
|
25
|
32
|
27
|
18
|
2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
FUJIFILM Corporation | 29329 |
46 |
FUJIFILM Manufacturing Europe B.V. | 269 |
29 |
Toray Industries, Inc. | 6935 |
27 |
Sumitomo Chemical Company, Limited | 9046 |
17 |
Renaissance Energy Research Corporation | 60 |
16 |
FUJIFILM Imaging Colorants Limited | 217 |
13 |
Nitto Denko Corporation | 8217 |
12 |
3m Innovative Properties Company | 17852 |
10 |
Asahi Kasei Medical Co., Ltd. | 285 |
9 |
Solventum Intellectual Properties Company | 3321 |
9 |
Mitsubishi Chemical Corporation | 4496 |
8 |
Trustees of Tufts College | 873 |
8 |
Dow Global Technologies LLC | 10353 |
7 |
Gambro Lundia AB | 1363 |
7 |
California Institute of Technology | 3972 |
5 |
Korea Advanced Institute of Science and Technology | 4368 |
5 |
Arkema France | 4102 |
5 |
Arkema Inc. | 1060 |
5 |
Merck Millipore Ltd. | 35 |
5 |
BASF SE | 20912 |
4 |
Other owners | 243 |