- 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: 889
10-year publication summary
|
60
|
37
|
68
|
57
|
41
|
56
|
49
|
75
|
62
|
50
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7167 |
105 |
| FUJIFILM Corporation | 30849 |
61 |
| Nitto Denko Corporation | 8642 |
42 |
| Sumitomo Chemical Company, Limited | 8995 |
35 |
| NGK Insulators, Ltd. | 5169 |
29 |
| Asahi Kasei Kabushiki Kaisha | 2876 |
28 |
| Renaissance Energy Research Corporation | 62 |
24 |
| National University Corporation Kobe University | 588 |
16 |
| Tokyo Ohka Kogyo Co., Ltd. | 1558 |
16 |
| Toyobo Co., Ltd. | 2570 |
16 |
| Uop LLC | 4411 |
13 |
| Teijin Limited | 1308 |
13 |
| Sumitomo Electric Industries, Ltd. | 16419 |
12 |
| National University of Singapore | 2617 |
11 |
| Daicel Corporation | 2603 |
10 |
| 3m Innovative Properties Company | 17455 |
9 |
| Asahi Kasei Medical Co., Ltd. | 231 |
9 |
| EMD Millipore Corporation | 637 |
8 |
| DIC Corporation | 4008 |
8 |
| Nanyang Technological University | 2250 |
8 |
| Other owners | 416 |