- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 3/12 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents by reaction of water vapour with carbon monoxide
Patent holdings for IPC class C01B 3/12
Total number of patents in this class: 298
10-year publication summary
|
14
|
13
|
8
|
11
|
15
|
14
|
41
|
43
|
38
|
19
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Topsoe A/S | 883 |
25 |
| Uop LLC | 4216 |
13 |
| Shell Internationale Research Maatschappij B.V. | 3551 |
9 |
| SABIC Global Technologies B.V. | 4302 |
9 |
| Saudi Arabian Oil Company | 12891 |
8 |
| Air Products and Chemicals, Inc. | 1404 |
7 |
| Iogen Corporation | 145 |
6 |
| Enerkem Inc. | 84 |
5 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3937 |
5 |
| Infinium Technology, LLC | 82 |
5 |
| Dioxycle | 66 |
5 |
| Shell Oil Company | 2141 |
4 |
| Johnson Matthey Davy Technologies Limited | 270 |
4 |
| Linde Aktiengesellschaft | 1518 |
4 |
| The Ohio State University Research Foundation | 530 |
4 |
| Sunfire GmbH | 50 |
4 |
| Totalenergies Onetech | 1267 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8657 |
3 |
| Siemens VAI Metals Technologies GmbH | 223 |
3 |
| Johnson Matthey Public Limited Company | 1842 |
3 |
| Other owners | 168 |