- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 3/00 - Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
Patent holdings for IPC class C01B 3/00
Total number of patents in this class: 1372
10-year publication summary
|
113
|
72
|
99
|
92
|
82
|
87
|
104
|
107
|
122
|
29
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hydrogenious Lohc Technologies GmbH | 53 |
29 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
24 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
23 |
| Hyundai Motor Company | 19021 |
15 |
| Centre National de La Recherche Scientifique | 9632 |
14 |
| Air Products and Chemicals, Inc. | 1448 |
14 |
| Arkema France | 3790 |
14 |
| Clean Planet Inc. | 61 |
14 |
| Hydrogenious Technologies GmbH | 19 |
13 |
| Praxair Technology, Inc. | 1367 |
13 |
| GKN Sinter Metals Engineering GmbH | 128 |
12 |
| Hysilabs, SAS | 21 |
11 |
| Hitachi, Ltd. | 16452 |
10 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
10 |
| Hydro-Quebec | 637 |
10 |
| Brilliant Light Power, Inc. | 60 |
9 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
9 |
| Siemens AG | 24990 |
8 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
8 |
| Korea Institute of Science and Technology | 2022 |
8 |
| Other owners | 1104 |