- 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: 182
10-year publication summary
|
20
|
12
|
13
|
20
|
27
|
19
|
15
|
15
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Gambro Lundia AB | 1369 |
16 |
| Toray Industries, Inc. | 6857 |
11 |
| Asahi Kasei Kabushiki Kaisha | 2563 |
9 |
| Massachusetts Institute of Technology | 9921 |
5 |
| Dow Global Technologies LLC | 10167 |
5 |
| FUJIFILM Corporation | 28829 |
4 |
| Toray Advanced Materials Korea Inc. | 242 |
4 |
| National University of Singapore | 2373 |
4 |
| 3m Innovative Properties Company | 17969 |
3 |
| Amogreentech Co., Ltd. | 592 |
3 |
| Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation | 297 |
3 |
| China Petroleum & Chemical Corporation | 1786 |
3 |
| Cornell University | 3205 |
3 |
| Council of Scientific & Industrial Research | 1408 |
3 |
| MANN+HUMMEL GmbH | 1731 |
3 |
| Unilever PLC | 3323 |
2 |
| Unilever N.V. | 3219 |
2 |
| Conopco, Inc. | 4818 |
2 |
| Kaneka Corporation | 4495 |
2 |
| Baxter International Inc. | 2458 |
2 |
| Other owners | 93 |