- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 3/02 - Production of hydrogen or of gaseous mixtures containing hydrogen
Patent holdings for IPC class C01B 3/02
Total number of patents in this class: 1687
10-year publication summary
|
89
|
73
|
71
|
89
|
68
|
96
|
127
|
136
|
148
|
21
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Casale SA | 633 |
84 |
| Topsoe A/S | 988 |
65 |
| ThyssenKrupp AG | 3406 |
33 |
| Air Products and Chemicals, Inc. | 1459 |
28 |
| Kellogg Brown & Root LLC | 520 |
26 |
| Haldor Topsøe A/S | 639 |
21 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4045 |
19 |
| Saudi Arabian Oil Company | 13886 |
19 |
| ThyssenKrupp Uhde GmbH | 362 |
19 |
| ThyssenKrupp Industrial Solutions AG | 631 |
17 |
| Iogen Corporation | 152 |
16 |
| Enerkem Inc. | 87 |
15 |
| Mitsubishi Heavy Industries, Ltd. | 8976 |
14 |
| Johnson Matthey Davy Technologies Limited | 481 |
14 |
| Praxair Technology, Inc. | 1259 |
14 |
| Stamicarbon B.V. Acting under The Name of MT Innovation Center | 54 |
14 |
| ThermoChem Recovery International, Inc. | 98 |
14 |
| Panasonic Intellectual Property Management Co., Ltd. | 33120 |
13 |
| Uop LLC | 4283 |
11 |
| Carbon Holdings Intellectual Properties, LLC | 63 |
11 |
| Other owners | 1220 |