- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 3/04 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of inorganic compounds, e.g. ammonia
Patent holdings for IPC class C01B 3/04
Total number of patents in this class: 1735
10-year publication summary
|
79
|
96
|
80
|
87
|
65
|
103
|
152
|
244
|
235
|
114
|
| 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 | 4118 |
49 |
| Saudi Arabian Oil Company | 14248 |
49 |
| Air Products and Chemicals, Inc. | 1474 |
28 |
| Amogy Inc. | 51 |
27 |
| Sawafuji Electric Co., Ltd. | 63 |
24 |
| POSCO Holdings Inc. | 693 |
24 |
| Japan Technological Research Association of Artificial Photosynthetic Chemical Process | 53 |
23 |
| SABIC Global Technologies B.V. | 4599 |
23 |
| BASF SE | 21308 |
22 |
| Mitsubishi Heavy Industries, Ltd. | 9139 |
19 |
| Toyota Motor Corporation | 35813 |
18 |
| Intelligent Energy Inc. | 43 |
16 |
| The University of Tokyo | 4369 |
16 |
| Linde GmbH | 1361 |
16 |
| Panasonic Corporation | 18962 |
14 |
| Korea Research Institute of Chemical Technology | 1475 |
14 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12378 |
14 |
| First Ammonia Motors Inc. | 27 |
14 |
| Gifu University | 123 |
13 |
| Hitachi Zosen Corporation | 590 |
13 |
| Other owners | 1299 |