Patent holdings for IPC class B01D 45/04

Total number of patents in this class: 221

10-year publication summary

16
23
22
28
22
11
16
14
14
6
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Cummins Filtration IP, Inc.
808
9
Nitta Corporation
366
6
General Electric Company
13829
5
Pratt & Whitney Canada Corp.
4602
5
Hamilton Sundstrand Corporation
4832
5
The General Hospital Corporation
4704
5
Nabtesco Automotive Corporation
128
5
Calandra Resources, Inc.
7
5
Honeywell International Inc.
13564
4
Samsung Electronics Co., Ltd.
144143
3
Haven Technology Solutions LLC
21
3
MANN+HUMMEL GmbH
1751
3
Omachron Intellectual Property Inc.
897
3
Paragon Space Development Corporation
46
3
Rolls-Royce North American Technologies, Inc.
1160
3
Segretech Inc.
3
3
KF E&E Co., Ltd.
4
3
The Regents of the University of California
19812
2
Mitsubishi Heavy Industries, Ltd.
8647
2
Ford Global Technologies, LLC
20465
2
Other owners 142