- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds 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: 1503
10-year publication summary
|
128
|
124
|
108
|
91
|
92
|
115
|
89
|
134
|
147
|
34
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Casale SA | 572 |
82 |
| Topsoe A/S | 732 |
51 |
| Air Products and Chemicals, Inc. | 1448 |
30 |
| ThyssenKrupp AG | 3086 |
29 |
| Kellogg Brown & Root LLC | 489 |
22 |
| Haldor Topsøe A/S | 698 |
21 |
| ThyssenKrupp Industrial Solutions AG | 729 |
20 |
| Johnson Matthey Public Limited Company | 1852 |
17 |
| Praxair Technology, Inc. | 1367 |
16 |
| Enerkem Inc. | 83 |
15 |
| Iogen Corporation | 136 |
14 |
| Stamicarbon B.V. Acting under The Name of MT Innovation Center | 54 |
14 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
13 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
13 |
| ThermoChem Recovery International, Inc. | 95 |
12 |
| Uop LLC | 4083 |
11 |
| Saudi Arabian Oil Company | 11322 |
11 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
10 |
| Ammonia Casale S.A. | 23 |
10 |
| Carbon Holdings Intellectual Properties, LLC | 41 |
10 |
| Other owners | 1082 |