- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
Patent holdings for IPC class B01D 69/02
Total number of patents in this class: 3032
10-year publication summary
|
188
|
209
|
202
|
288
|
297
|
296
|
335
|
365
|
330
|
240
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6737 |
151 |
| FUJIFILM Corporation | 27478 |
85 |
| Nitto Denko Corporation | 7910 |
56 |
| Asahi Kasei Kabushiki Kaisha | 2508 |
48 |
| Entegris, Inc. | 1773 |
46 |
| FUJIFILM Manufacturing Europe B.V. | 271 |
44 |
| W. L. Gore & Associates, Inc. | 2649 |
42 |
| NGK Insulators, Ltd. | 4659 |
39 |
| King Abdullah University of Science and Technology | 1697 |
38 |
| Dow Global Technologies LLC | 10262 |
37 |
| The Regents of the University of California | 19182 |
34 |
| Saudi Arabian Oil Company | 11851 |
32 |
| Asahi Kasei Medical Co., Ltd. | 303 |
29 |
| BASF SE | 20088 |
28 |
| Gambro Lundia AB | 1372 |
27 |
| LG Chem, Ltd. | 17493 |
26 |
| National University of Singapore | 2295 |
25 |
| 3m Innovative Properties Company | 18114 |
24 |
| Toyobo Co., Ltd. | 2350 |
23 |
| Sartorius Stedim Biotech GmbH | 788 |
22 |
| Other owners | 2176 |