Patent holdings for IPC class B01D 21/24

Total number of patents in this class: 1197

10-year publication summary

100
96
129
90
133
123
100
81
67
0
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Adey Holdings (2008) Limited
334
23
Smith & Loveless, Inc.
108
18
FLSmidth A/S
858
18
Becton, Dickinson and Company
7058
16
Evoqua Water Technologies LLC
905
16
Qwtip LLC
55
15
Kurita Water Industries Ltd.
1150
13
Outotec Oyj
302
10
Metso Outotec Finland Oy
797
10
Kbk Industries, LLC
19
9
Ovivo Inc.
147
9
Halliburton Energy Services, Inc.
20403
8
Del Corporation
11
7
Flamco B.V.
45
7
Invent Umwelt-und Verfahrenstechnik AG
132
7
LINKON TECHNOLOGY CO., LTD. (a legal entity)
14
7
Specialized Desanders Inc.
45
7
Contech Engineered Solutions LLC
216
6
Daritech, Inc.
37
6
Hydro International plc
43
6
Other owners 979