- 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: 1580
10-year publication summary
|
124
|
108
|
91
|
92
|
115
|
90
|
134
|
150
|
133
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Casale SA | 593 |
85 |
| Topsoe A/S | 826 |
58 |
| Air Products and Chemicals, Inc. | 1426 |
29 |
| ThyssenKrupp AG | 3210 |
29 |
| Kellogg Brown & Root LLC | 506 |
22 |
| Haldor Topsøe A/S | 675 |
21 |
| ThyssenKrupp Industrial Solutions AG | 700 |
20 |
| Johnson Matthey Public Limited Company | 1850 |
17 |
| Enerkem Inc. | 88 |
16 |
| Iogen Corporation | 142 |
15 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3585 |
15 |
| Praxair Technology, Inc. | 1336 |
14 |
| Stamicarbon B.V. Acting under The Name of MT Innovation Center | 54 |
14 |
| Panasonic Intellectual Property Management Co., Ltd. | 29620 |
13 |
| ThermoChem Recovery International, Inc. | 96 |
13 |
| Saudi Arabian Oil Company | 12404 |
12 |
| Uop LLC | 4187 |
11 |
| Mitsubishi Heavy Industries, Ltd. | 8515 |
10 |
| Carbon Holdings Intellectual Properties, LLC | 49 |
10 |
| Ammonia Casale S.A. | 21 |
9 |
| Other owners | 1147 |