- 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: 2844
10-year publication summary
|
140
|
160
|
152
|
147
|
135
|
137
|
133
|
144
|
165
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
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 | 4014 |
169 |
| Topsoe A/S | 982 |
158 |
| Haldor Topsøe A/S | 641 |
92 |
| Praxair Technology, Inc. | 1261 |
89 |
| Panasonic Intellectual Property Management Co., Ltd. | 32904 |
86 |
| Panasonic Corporation | 19890 |
82 |
| Saudi Arabian Oil Company | 13814 |
76 |
| Casale SA | 639 |
68 |
| Johnson Matthey Public Limited Company | 1737 |
48 |
| Air Products and Chemicals, Inc. | 1455 |
46 |
| SABIC Global Technologies B.V. | 4448 |
43 |
| Shell Internationale Research Maatschappij B.V. | 3517 |
35 |
| Johnson Matthey Davy Technologies Limited | 464 |
35 |
| ENI S.p.A. | 1290 |
34 |
| Watt Fuel Cell Corp. | 168 |
34 |
| Aramco Services Company | 4147 |
31 |
| JX Nippon Oil & Energy Corporation | 978 |
30 |
| Osaka Gas Co., Ltd. | 310 |
26 |
| ThyssenKrupp AG | 3388 |
25 |
| Honda Motor Co., Ltd. | 25764 |
23 |
| Other owners | 1614 |