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