- 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: 351
10-year publication summary
|
14
|
9
|
11
|
15
|
15
|
43
|
44
|
45
|
35
|
27
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Topsoe A/S | 1080 |
31 |
| Uop LLC | 4407 |
13 |
| SABIC Global Technologies B.V. | 4632 |
10 |
| Shell Internationale Research Maatschappij B.V. | 3378 |
9 |
| Saudi Arabian Oil Company | 14398 |
9 |
| Johnson Matthey Davy Technologies Limited | 540 |
8 |
| Air Products and Chemicals, Inc. | 1476 |
7 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4148 |
7 |
| Enerkem Inc. | 94 |
6 |
| Iogen Corporation | 160 |
6 |
| Dioxycle | 87 |
6 |
| ThyssenKrupp AG | 3333 |
5 |
| ThyssenKrupp Uhde GmbH | 388 |
5 |
| Infinium Technology, LLC | 95 |
5 |
| Shell Oil Company | 2054 |
4 |
| Johnson Matthey Public Limited Company | 1766 |
4 |
| Linde Aktiengesellschaft | 1410 |
4 |
| The Ohio State University Research Foundation | 462 |
4 |
| Totalenergies Onetech | 1551 |
4 |
| Aether Fuels Pte. Ltd. | 30 |
4 |
| Other owners | 200 |