- 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: 551
10-year publication summary
|
40
|
38
|
41
|
26
|
30
|
28
|
41
|
44
|
43
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 30106 |
56 |
| Nitto Denko Corporation | 8420 |
37 |
| FUJIFILM Manufacturing Europe B.V. | 253 |
28 |
| Uop LLC | 4283 |
12 |
| 3m Innovative Properties Company | 17600 |
10 |
| Nissan Chemical Corporation | 2134 |
10 |
| The Regents of the University of California | 20427 |
9 |
| Seiko Epson Corporation | 19851 |
9 |
| Toray Industries, Inc. | 7023 |
9 |
| Saudi Arabian Oil Company | 13886 |
9 |
| FUJIFILM Imaging Colorants Limited | 202 |
8 |
| Hiroshima University | 575 |
7 |
| NGK Insulators, Ltd. | 5211 |
6 |
| Tokyo Ohka Kogyo Co., Ltd. | 1549 |
6 |
| Split Rock Filter Systems LLC | 11 |
6 |
| Shin-Etsu Chemical Co., Ltd. | 5884 |
5 |
| Dow Corning Corporation | 926 |
5 |
| Terumo Kabushiki Kaisha | 5682 |
5 |
| Toyo Tire & Rubber Co., Ltd. | 506 |
5 |
| NanoMembrane Technologies, Inc. | 5 |
5 |
| Other owners | 304 |