- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 3/48 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents followed by reaction of water vapour with carbon monoxide
Patent holdings for IPC class C01B 3/48
Total number of patents in this class: 973
10-year publication summary
|
49
|
53
|
55
|
50
|
64
|
63
|
85
|
100
|
92
|
60
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Topsoe A/S | 892 |
80 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3976 |
68 |
| Johnson Matthey Public Limited Company | 1851 |
42 |
| Saudi Arabian Oil Company | 13091 |
38 |
| Haldor Topsøe A/S | 659 |
36 |
| Casale SA | 608 |
33 |
| Praxair Technology, Inc. | 1299 |
24 |
| Iogen Corporation | 146 |
22 |
| Air Products and Chemicals, Inc. | 1423 |
21 |
| Stamicarbon B.V. Acting under The Name of MT Innovation Center | 54 |
19 |
| Shell Internationale Research Maatschappij B.V. | 3542 |
14 |
| ExxonMobil Research And Engineering Company | 2576 |
14 |
| Panasonic Intellectual Property Management Co., Ltd. | 31330 |
12 |
| Shell Oil Company | 2141 |
12 |
| Uop LLC | 4244 |
12 |
| Linde GmbH | 1261 |
10 |
| Battelle Memorial Institute | 2481 |
9 |
| ENI S.p.A. | 1261 |
9 |
| SABIC Global Technologies B.V. | 4335 |
9 |
| Bayotech, Inc. | 78 |
9 |
| Other owners | 480 |