- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 3/38 - 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 using catalysts
Patent holdings for IPC class C01B 3/38
Total number of patents in this class: 2811
10-year publication summary
|
172
|
140
|
160
|
152
|
147
|
135
|
135
|
132
|
144
|
116
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3985 |
171 |
| Topsoe A/S | 898 |
152 |
| Haldor Topsøe A/S | 660 |
96 |
| Praxair Technology, Inc. | 1289 |
90 |
| Panasonic Corporation | 20088 |
82 |
| Panasonic Intellectual Property Management Co., Ltd. | 31562 |
82 |
| Saudi Arabian Oil Company | 13224 |
68 |
| Johnson Matthey Public Limited Company | 1866 |
65 |
| Casale SA | 613 |
64 |
| Air Products and Chemicals, Inc. | 1443 |
43 |
| SABIC Global Technologies B.V. | 4351 |
40 |
| Shell Internationale Research Maatschappij B.V. | 3548 |
37 |
| ENI S.p.A. | 1270 |
37 |
| Watt Fuel Cell Corp. | 167 |
34 |
| JX Nippon Oil & Energy Corporation | 999 |
31 |
| Aramco Services Company | 3987 |
26 |
| Osaka Gas Co., Ltd. | 312 |
26 |
| Honda Motor Co., Ltd. | 25327 |
23 |
| Nippon Oil Corporation | 284 |
23 |
| ThyssenKrupp AG | 3291 |
23 |
| Other owners | 1598 |