Patent holdings for IPC class B01D 37/04

Total number of patents in this class: 359

10-year publication summary

37
24
44
40
32
32
27
25
23
25
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Principal owners for this class

Owner
All patents
This class
Coway Co., Ltd.
791
13
Repligen Corporation
299
8
Cummins Filtration IP, Inc.
584
7
LG Electronics Inc.
75855
6
Samsung Electronics Co., Ltd.
158442
5
DEKA Products Limited Partnership
1897
5
Donaldson Company, Inc.
1608
5
HYDAC Filtertechnik GmbH
288
5
RPM Industries, LLC
80
5
Coway Co., Ltd.
13
5
FUJIFILM Corporation
30594
4
Tokyo Electron Limited
13871
4
Ecolab USA Inc.
5813
4
Nalco Company
535
4
ElectroSea, LLC
49
4
Alcoa Canada Co
6
4
Cambridge Crops, Inc.
32
4
Caterpillar Inc.
10280
3
Xiaomi Inc.
1746
3
Boll & Kirch Filterbau GmbH
36
3
Other owners 258