- 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: 3816
10-year publication summary
|
314
|
301
|
297
|
298
|
286
|
294
|
262
|
280
|
255
|
91
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7045 |
221 |
| FUJIFILM Corporation | 30277 |
184 |
| Nitto Denko Corporation | 8470 |
156 |
| NGK Insulators, Ltd. | 5206 |
142 |
| FUJIFILM Manufacturing Europe B.V. | 251 |
66 |
| Entegris, Inc. | 1983 |
61 |
| LG Chem, Ltd. | 17840 |
54 |
| W. L. Gore & Associates, Inc. | 2700 |
51 |
| National University of Singapore | 2553 |
51 |
| Sumitomo Chemical Company, Limited | 9055 |
50 |
| Dow Global Technologies LLC | 10798 |
47 |
| Asahi Kasei Kabushiki Kaisha | 2783 |
44 |
| Uop LLC | 4315 |
38 |
| Saudi Arabian Oil Company | 13953 |
33 |
| 3m Innovative Properties Company | 17509 |
30 |
| Mitsubishi Chemical Corporation | 4673 |
29 |
| King Fahd University of Petroleum and Minerals | 1484 |
29 |
| Aquaporin A/S | 62 |
27 |
| Sumitomo Electric Industries, Ltd. | 16113 |
26 |
| Trustees of Tufts College | 947 |
26 |
| Other owners | 2451 |