- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
Patent holdings for IPC class B01D 69/02
Total number of patents in this class: 3721
10-year publication summary
|
204
|
288
|
301
|
297
|
337
|
374
|
335
|
377
|
330
|
187
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7088 |
177 |
| FUJIFILM Corporation | 30458 |
93 |
| Nitto Denko Corporation | 8516 |
73 |
| Entegris, Inc. | 2003 |
61 |
| Asahi Kasei Kabushiki Kaisha | 2825 |
54 |
| W. L. Gore & Associates, Inc. | 2718 |
48 |
| NGK Insulators, Ltd. | 5234 |
47 |
| King Abdullah University of Science and Technology | 1841 |
41 |
| FUJIFILM Manufacturing Europe B.V. | 248 |
40 |
| Dow Global Technologies LLC | 10916 |
39 |
| The Regents of the University of California | 20690 |
38 |
| Saudi Arabian Oil Company | 14135 |
37 |
| BASF SE | 21292 |
32 |
| Gambro Lundia AB | 1374 |
29 |
| National University of Singapore | 2578 |
29 |
| Sartorius Stedim Biotech GmbH | 870 |
27 |
| King Fahd University of Petroleum and Minerals | 1555 |
24 |
| Trustees of Tufts College | 971 |
22 |
| Uop LLC | 4400 |
21 |
| Georgia Tech Research Corporation | 2935 |
21 |
| Other owners | 2768 |