- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds 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: 853
10-year publication summary
|
37
|
49
|
53
|
55
|
50
|
64
|
60
|
81
|
86
|
24
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Topsoe A/S | 732 |
63 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
54 |
| Haldor Topsøe A/S | 698 |
37 |
| Casale SA | 572 |
30 |
| Saudi Arabian Oil Company | 11322 |
30 |
| Johnson Matthey Public Limited Company | 1852 |
29 |
| Praxair Technology, Inc. | 1367 |
23 |
| Stamicarbon B.V. Acting under The Name of MT Innovation Center | 54 |
19 |
| Air Products and Chemicals, Inc. | 1448 |
18 |
| Iogen Corporation | 136 |
18 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
16 |
| ExxonMobil Research And Engineering Company | 2830 |
14 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
13 |
| Shell Oil Company | 2196 |
12 |
| ENI S.p.A. | 1241 |
9 |
| Bayotech, Inc. | 70 |
9 |
| Panasonic Corporation | 20786 |
8 |
| Battelle Memorial Institute | 2356 |
8 |
| JX Nippon Oil & Energy Corporation | 1019 |
8 |
| L'Air Liquide, Societe Anonyme pour L'etude et L'exploitation des Proced ES Georges Claude | 296 |
8 |
| Other owners | 427 |