- 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: 572
10-year publication summary
|
40
|
42
|
44
|
26
|
31
|
28
|
43
|
44
|
43
|
31
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 30327 |
57 |
| Nitto Denko Corporation | 8486 |
39 |
| FUJIFILM Manufacturing Europe B.V. | 249 |
29 |
| Seiko Epson Corporation | 20081 |
13 |
| Uop LLC | 4330 |
12 |
| 3m Innovative Properties Company | 17491 |
10 |
| Nissan Chemical Corporation | 2183 |
10 |
| The Regents of the University of California | 20590 |
9 |
| Toray Industries, Inc. | 7067 |
9 |
| Saudi Arabian Oil Company | 13956 |
9 |
| FUJIFILM Imaging Colorants Limited | 197 |
8 |
| Hiroshima University | 580 |
7 |
| NGK Insulators, Ltd. | 5223 |
6 |
| Tokyo Ohka Kogyo Co., Ltd. | 1544 |
6 |
| Split Rock Filter Systems LLC | 11 |
6 |
| Shin-Etsu Chemical Co., Ltd. | 5997 |
5 |
| Dow Corning Corporation | 901 |
5 |
| Terumo Kabushiki Kaisha | 5749 |
5 |
| Toyo Tire & Rubber Co., Ltd. | 494 |
5 |
| NanoMembrane Technologies, Inc. | 5 |
5 |
| Other owners | 317 |