- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 69/12 - Composite membranes; Ultra-thin membranes
Patent holdings for IPC class B01D 69/12
Total number of patents in this class: 3282
10-year publication summary
|
297
|
278
|
315
|
300
|
296
|
294
|
275
|
287
|
240
|
69
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6652 |
196 |
| FUJIFILM Corporation | 27102 |
172 |
| Nitto Denko Corporation | 7879 |
138 |
| NGK Insulators, Ltd. | 4589 |
125 |
| Dow Global Technologies LLC | 10147 |
65 |
| FUJIFILM Manufacturing Europe B.V. | 271 |
61 |
| LG Chem, Ltd. | 17205 |
58 |
| Entegris, Inc. | 1736 |
46 |
| National University of Singapore | 2228 |
46 |
| Sumitomo Chemical Company, Limited | 8808 |
40 |
| W. L. Gore & Associates, Inc. | 2600 |
40 |
| Uop LLC | 4083 |
39 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
37 |
| 3m Innovative Properties Company | 18406 |
28 |
| Mitsubishi Chemical Corporation | 4313 |
27 |
| King Abdullah University of Science and Technology | 1703 |
24 |
| Saudi Arabian Oil Company | 11322 |
24 |
| Aquaporin A/S | 69 |
24 |
| The Regents of the University of California | 18943 |
22 |
| FUJIFILM Imaging Colorants Limited | 233 |
20 |
| Other owners | 2050 |