- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 69/00 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
Patent holdings for IPC class B01D 69/00
Total number of patents in this class: 726
10-year publication summary
|
43
|
53
|
60
|
37
|
68
|
57
|
39
|
56
|
48
|
20
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6652 |
75 |
| FUJIFILM Corporation | 27102 |
60 |
| Nitto Denko Corporation | 7879 |
30 |
| Sumitomo Chemical Company, Limited | 8808 |
26 |
| Renaissance Energy Research Corporation | 60 |
22 |
| NGK Insulators, Ltd. | 4589 |
21 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
18 |
| Uop LLC | 4083 |
13 |
| Toyobo Co., Ltd. | 2286 |
13 |
| Sumitomo Electric Industries, Ltd. | 14131 |
10 |
| National University Corporation Kobe University | 460 |
10 |
| National University of Singapore | 2228 |
10 |
| 3m Innovative Properties Company | 18406 |
9 |
| Asahi Kasei Medical Co., Ltd. | 308 |
9 |
| Daicel Corporation | 2128 |
9 |
| EMD Millipore Corporation | 657 |
8 |
| BASF SE | 19740 |
7 |
| W. L. Gore & Associates, Inc. | 2600 |
7 |
| Nanyang Technological University | 1739 |
7 |
| Teijin Limited | 1216 |
7 |
| Other owners | 355 |