- 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: 1742
10-year publication summary
|
79
|
96
|
80
|
87
|
65
|
102
|
151
|
243
|
237
|
122
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 14390 |
50 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4141 |
49 |
| Amogy Inc. | 50 |
27 |
| Air Products and Chemicals, Inc. | 1474 |
26 |
| Sawafuji Electric Co., Ltd. | 63 |
24 |
| POSCO Holdings Inc. | 696 |
24 |
| Japan Technological Research Association of Artificial Photosynthetic Chemical Process | 53 |
23 |
| SABIC Global Technologies B.V. | 4629 |
23 |
| BASF SE | 21318 |
22 |
| Mitsubishi Heavy Industries, Ltd. | 9231 |
19 |
| Toyota Motor Corporation | 36327 |
18 |
| Linde GmbH | 1382 |
17 |
| Intelligent Energy Inc. | 40 |
16 |
| The University of Tokyo | 4395 |
16 |
| Panasonic Corporation | 18658 |
14 |
| Korea Research Institute of Chemical Technology | 1492 |
14 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12318 |
14 |
| Gifu University | 122 |
13 |
| Hitachi Zosen Corporation | 586 |
13 |
| First Ammonia Motors Inc. | 29 |
13 |
| Other owners | 1307 |