Patent holdings for IPC class C01B 3/06

Total number of patents in this class: 737

10-year publication summary

50
52
49
52
37
41
60
51
63
43
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Intelligent Energy Limited
406
23
Hysilabs, SAS
23
19
Commissariat à l'énergie atomique et aux energies alternatives
10931
17
Electriq-global Energy Solutions Ltd
17
15
Honeywell International Inc.
13540
13
Intelligent Energy Inc.
52
13
H2fuel-systems B.V.
14
10
Saudi Arabian Oil Company
13224
9
Hyundai Motor Company
22086
8
Korea Institute of Science and Technology
2123
8
iHOD Ltd
17
8
Ohio State Innovation Foundation
2140
8
Kia Corporation
9780
8
National Technology & Engineering Solutions of Sandia, LLC
1902
7
Canon Kabushiki Kaisha
7067
7
California Institute of Technology
3977
6
GE Aviation Systems Limited
267
6
Infinium Technology, LLC
83
6
Mitsubishi Heavy Industries, Ltd.
8752
5
Centre National de La Recherche Scientifique
10464
5
Other owners 536