- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/42 - Polymers of nitriles, e.g. polyacrylonitrile
Patent holdings for IPC class B01D 71/42
Total number of patents in this class: 186
10-year publication summary
|
20
|
12
|
13
|
20
|
27
|
19
|
15
|
16
|
3
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Gambro Lundia AB | 1367 |
17 |
| Toray Industries, Inc. | 6936 |
11 |
| Asahi Kasei Kabushiki Kaisha | 2673 |
9 |
| Massachusetts Institute of Technology | 10057 |
5 |
| Dow Global Technologies LLC | 10363 |
5 |
| FUJIFILM Corporation | 29367 |
4 |
| Toray Advanced Materials Korea Inc. | 259 |
4 |
| National University of Singapore | 2449 |
4 |
| 3m Innovative Properties Company | 17833 |
3 |
| Amogreentech Co., Ltd. | 607 |
3 |
| Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation | 298 |
3 |
| China Petroleum & Chemical Corporation | 1903 |
3 |
| Cornell University | 3306 |
3 |
| Council of Scientific & Industrial Research | 1425 |
3 |
| MANN+HUMMEL GmbH | 1758 |
3 |
| Vontron Technology Co., Ltd. | 35 |
3 |
| Unilever PLC | 3195 |
2 |
| Unilever N.V. | 3103 |
2 |
| Conopco, Inc. | 5023 |
2 |
| Kaneka Corporation | 4522 |
2 |
| Other owners | 95 |