- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/70 - Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only
Patent holdings for IPC class B01D 71/70
Total number of patents in this class: 532
10-year publication summary
|
46
|
40
|
38
|
40
|
26
|
28
|
28
|
41
|
44
|
37
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 29714 |
56 |
| Nitto Denko Corporation | 8337 |
30 |
| FUJIFILM Manufacturing Europe B.V. | 259 |
28 |
| Uop LLC | 4248 |
12 |
| Nissan Chemical Corporation | 2082 |
10 |
| The Regents of the University of California | 20172 |
9 |
| Seiko Epson Corporation | 19673 |
9 |
| Toray Industries, Inc. | 7000 |
9 |
| Saudi Arabian Oil Company | 13472 |
9 |
| 3m Innovative Properties Company | 17755 |
8 |
| FUJIFILM Imaging Colorants Limited | 206 |
8 |
| Hiroshima University | 565 |
7 |
| NGK Insulators, Ltd. | 5124 |
6 |
| Tokyo Ohka Kogyo Co., Ltd. | 1550 |
6 |
| Split Rock Filter Systems LLC | 11 |
6 |
| Shin-Etsu Chemical Co., Ltd. | 5724 |
5 |
| Dow Corning Corporation | 954 |
5 |
| Toyo Tire & Rubber Co., Ltd. | 528 |
5 |
| NanoMembrane Technologies, Inc. | 5 |
5 |
| Aquaporin A/S | 74 |
5 |
| Other owners | 294 |