- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 69/00 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor
Patent holdings for IPC class B01D 69/00
Total number of patents in this class: 810
10-year publication summary
|
50
|
57
|
35
|
66
|
52
|
39
|
49
|
49
|
74
|
34
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6976 |
96 |
| FUJIFILM Corporation | 29543 |
61 |
| Nitto Denko Corporation | 8280 |
35 |
| Sumitomo Chemical Company, Limited | 9047 |
33 |
| NGK Insulators, Ltd. | 5016 |
27 |
| Renaissance Energy Research Corporation | 61 |
22 |
| Asahi Kasei Kabushiki Kaisha | 2684 |
19 |
| National University Corporation Kobe University | 531 |
15 |
| Toyobo Co., Ltd. | 2516 |
15 |
| Uop LLC | 4241 |
13 |
| Sumitomo Electric Industries, Ltd. | 15593 |
12 |
| Asahi Kasei Medical Co., Ltd. | 264 |
11 |
| National University of Singapore | 2466 |
11 |
| Teijin Limited | 1253 |
10 |
| 3m Innovative Properties Company | 17795 |
9 |
| Daicel Corporation | 2375 |
9 |
| EMD Millipore Corporation | 650 |
8 |
| Nanyang Technological University | 2035 |
8 |
| Tokyo Ohka Kogyo Co., Ltd. | 1549 |
8 |
| BASF SE | 20979 |
7 |
| Other owners | 381 |