- 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: 490
10-year publication summary
47
|
40
|
42
|
43
|
26
|
30
|
26
|
41
|
43
|
1
|
2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
FUJIFILM Corporation | 28555 |
55 |
FUJIFILM Manufacturing Europe B.V. | 270 |
27 |
Nitto Denko Corporation | 8085 |
19 |
Uop LLC | 4188 |
12 |
The Regents of the University of California | 19503 |
10 |
Toray Industries, Inc. | 6848 |
9 |
Nissan Chemical Corporation | 1882 |
9 |
3m Innovative Properties Company | 17951 |
8 |
FUJIFILM Imaging Colorants Limited | 224 |
8 |
Saudi Arabian Oil Company | 12423 |
8 |
Seiko Epson Corporation | 18984 |
7 |
NGK Insulators, Ltd. | 4795 |
6 |
Split Rock Filter Systems LLC | 11 |
6 |
Shin-Etsu Chemical Co., Ltd. | 5444 |
5 |
Dow Corning Corporation | 1018 |
5 |
Hiroshima University | 543 |
5 |
Toyo Tire & Rubber Co., Ltd. | 571 |
5 |
NanoMembrane Technologies, Inc. | 5 |
5 |
Aquaporin A/S | 72 |
5 |
Dow Silicones Corporation | 1805 |
5 |
Other owners | 271 |