Patent holdings for IPC class C01B 3/32

Total number of patents in this class: 758

10-year publication summary

59
51
32
31
38
42
50
66
64
33
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Watt Fuel Cell Corp.
164
21
Shell Internationale Research Maatschappij B.V.
3545
16
Element 1 Corp.
41
15
Air Products and Chemicals, Inc.
1400
13
Enerkem Inc.
84
13
BASF SE
20758
11
Topsoe A/S
874
11
Shell Oil Company
2141
10
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
3916
10
Guangdong Hydrogen Energy Science and Technology Co., Ltd
18
8
Uop LLC
4207
7
Johnson Matthey Public Limited Company
1861
7
Saudi Arabian Oil Company
12833
7
Panasonic Intellectual Property Management Co., Ltd.
30903
6
Casale SA
604
6
Proton Power, Inc.
31
6
Sure Champion Investment Limited
50
6
Nissan Motor Co., Ltd.
12377
5
SABIC Global Technologies B.V.
4279
5
SK Innovation Co., Ltd.
1288
5
Other owners 570