- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 69/12 - Composite membranesUltra-thin membranes
Patent holdings for IPC class B01D 69/12
Total number of patents in this class: 3686
10-year publication summary
|
264
|
298
|
282
|
280
|
281
|
269
|
282
|
243
|
272
|
197
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7000 |
213 |
| FUJIFILM Corporation | 29696 |
182 |
| Nitto Denko Corporation | 8338 |
150 |
| NGK Insulators, Ltd. | 5103 |
139 |
| FUJIFILM Manufacturing Europe B.V. | 259 |
64 |
| LG Chem, Ltd. | 17676 |
59 |
| Entegris, Inc. | 1898 |
59 |
| Sumitomo Chemical Company, Limited | 9079 |
50 |
| National University of Singapore | 2480 |
50 |
| W. L. Gore & Associates, Inc. | 2726 |
49 |
| Dow Global Technologies LLC | 10437 |
48 |
| Asahi Kasei Kabushiki Kaisha | 2698 |
41 |
| Uop LLC | 4246 |
37 |
| Mitsubishi Chemical Corporation | 4579 |
31 |
| Saudi Arabian Oil Company | 13409 |
31 |
| 3m Innovative Properties Company | 17771 |
28 |
| Aquaporin A/S | 74 |
26 |
| Sumitomo Electric Industries, Ltd. | 15647 |
25 |
| King Fahd University of Petroleum and Minerals | 1280 |
25 |
| Trustees of Tufts College | 888 |
25 |
| Other owners | 2354 |