- 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: 3655
10-year publication summary
|
204
|
288
|
301
|
297
|
337
|
373
|
335
|
376
|
329
|
125
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7053 |
173 |
| FUJIFILM Corporation | 30296 |
92 |
| Nitto Denko Corporation | 8470 |
73 |
| Entegris, Inc. | 1986 |
61 |
| Asahi Kasei Kabushiki Kaisha | 2798 |
54 |
| W. L. Gore & Associates, Inc. | 2705 |
48 |
| NGK Insulators, Ltd. | 5215 |
47 |
| King Abdullah University of Science and Technology | 1833 |
41 |
| The Regents of the University of California | 20587 |
40 |
| FUJIFILM Manufacturing Europe B.V. | 251 |
40 |
| Dow Global Technologies LLC | 10824 |
39 |
| Saudi Arabian Oil Company | 13949 |
36 |
| BASF SE | 21151 |
34 |
| Gambro Lundia AB | 1357 |
29 |
| National University of Singapore | 2563 |
28 |
| Sartorius Stedim Biotech GmbH | 869 |
26 |
| LG Chem, Ltd. | 17867 |
23 |
| 3m Innovative Properties Company | 17507 |
22 |
| King Fahd University of Petroleum and Minerals | 1506 |
22 |
| Trustees of Tufts College | 949 |
22 |
| Other owners | 2705 |