- 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: 3773
10-year publication summary
|
298
|
282
|
280
|
282
|
269
|
282
|
247
|
273
|
247
|
44
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7023 |
218 |
| FUJIFILM Corporation | 30106 |
182 |
| Nitto Denko Corporation | 8420 |
152 |
| NGK Insulators, Ltd. | 5211 |
143 |
| FUJIFILM Manufacturing Europe B.V. | 253 |
64 |
| Entegris, Inc. | 1957 |
60 |
| LG Chem, Ltd. | 17759 |
54 |
| National University of Singapore | 2547 |
52 |
| Sumitomo Chemical Company, Limited | 9058 |
49 |
| Dow Global Technologies LLC | 10720 |
47 |
| W. L. Gore & Associates, Inc. | 2713 |
47 |
| Asahi Kasei Kabushiki Kaisha | 2746 |
43 |
| Uop LLC | 4283 |
37 |
| Saudi Arabian Oil Company | 13886 |
33 |
| 3m Innovative Properties Company | 17600 |
30 |
| Mitsubishi Chemical Corporation | 4682 |
29 |
| King Fahd University of Petroleum and Minerals | 1447 |
28 |
| Sumitomo Electric Industries, Ltd. | 15994 |
26 |
| Aquaporin A/S | 74 |
26 |
| Trustees of Tufts College | 933 |
25 |
| Other owners | 2428 |