- All sections
- B - Performing operations; transporting
- 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: 454
10-year publication summary
|
53
|
47
|
40
|
42
|
43
|
26
|
31
|
26
|
40
|
13
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 27102 |
53 |
| FUJIFILM Manufacturing Europe B.V. | 271 |
25 |
| Nitto Denko Corporation | 7879 |
15 |
| Uop LLC | 4083 |
11 |
| The Regents of the University of California | 18943 |
9 |
| Toray Industries, Inc. | 6652 |
9 |
| 3m Innovative Properties Company | 18406 |
8 |
| FUJIFILM Imaging Colorants Limited | 233 |
8 |
| Nissan Chemical Corporation | 1725 |
8 |
| Saudi Arabian Oil Company | 11322 |
7 |
| NGK Insulators, Ltd. | 4589 |
6 |
| Split Rock Filter Systems LLC | 12 |
6 |
| Dow Corning Corporation | 1072 |
5 |
| Toyo Tire & Rubber Co., Ltd. | 631 |
5 |
| Aquaporin A/S | 69 |
5 |
| Dow Silicones Corporation | 1664 |
5 |
| Evonik Operations GmbH | 3879 |
5 |
| ExxonMobil Research And Engineering Company | 2830 |
4 |
| Seiko Epson Corporation | 18724 |
4 |
| Denso Corporation | 23338 |
4 |
| Other owners | 252 |