Patent holdings for IPC class B01J 23/22

Total number of patents in this class: 741

10-year publication summary

43
61
84
53
61
34
46
33
30
19
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
BASF SE
20979
39
Umicore AG & Co. KG
856
32
The Chugoku Electric Power Co., Inc.
513
25
Johnson Matthey Public Limited Company
1867
25
Topsoe A/S
909
19
BASF Corporation
1718
18
LG Chem, Ltd.
17644
13
BASF Mobile Emissions Catalysts LLC
409
13
Shell Internationale Research Maatschappij B.V.
3553
12
Shell Oil Company
2138
11
NOVA Chemicals (International) S.A.
778
11
Tokyo Metropolitan Public University Corporation
86
11
Clariant International Ltd.
933
10
Tokyo Metropolitan University
98
10
Korea Institute of Science and Technology
2131
9
W. L. Gore & Associates, Inc.
2718
9
Mitsubishi Power, Ltd.
1784
9
Hitachi Zosen Corporation
615
8
Haldor Topsøe A/S
659
8
Shell USA, Inc.
1235
8
Other owners 441