- 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: 3887
10-year publication summary
|
314
|
301
|
297
|
298
|
286
|
295
|
265
|
280
|
256
|
152
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7096 |
225 |
| FUJIFILM Corporation | 30512 |
185 |
| Nitto Denko Corporation | 8526 |
156 |
| NGK Insulators, Ltd. | 5232 |
142 |
| FUJIFILM Manufacturing Europe B.V. | 248 |
67 |
| Entegris, Inc. | 2008 |
61 |
| Sumitomo Chemical Company, Limited | 8996 |
52 |
| National University of Singapore | 2582 |
52 |
| W. L. Gore & Associates, Inc. | 2719 |
51 |
| Dow Global Technologies LLC | 10930 |
47 |
| Asahi Kasei Kabushiki Kaisha | 2828 |
44 |
| Uop LLC | 4393 |
38 |
| Saudi Arabian Oil Company | 14207 |
33 |
| Nanoh2o Co., Ltd. | 60 |
32 |
| King Fahd University of Petroleum and Minerals | 1569 |
31 |
| 3m Innovative Properties Company | 17488 |
30 |
| Mitsubishi Chemical Corporation | 4721 |
29 |
| LG Chem, Ltd. | 17921 |
28 |
| Sumitomo Electric Industries, Ltd. | 16305 |
28 |
| Trustees of Tufts College | 976 |
28 |
| Other owners | 2528 |