- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 3/50 - Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
Patent holdings for IPC class C01B 3/50
Total number of patents in this class: 1648
10-year publication summary
|
75
|
77
|
71
|
70
|
77
|
129
|
134
|
150
|
177
|
22
|
| 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 | 4045 |
94 |
| Saudi Arabian Oil Company | 13886 |
58 |
| Uop LLC | 4283 |
48 |
| ExxonMobil Research And Engineering Company | 2496 |
45 |
| Air Products and Chemicals, Inc. | 1459 |
42 |
| Shell Internationale Research Maatschappij B.V. | 3498 |
39 |
| Topsoe A/S | 988 |
37 |
| Praxair Technology, Inc. | 1259 |
34 |
| Linde GmbH | 1323 |
29 |
| Casale SA | 633 |
26 |
| Linde Aktiengesellschaft | 1457 |
24 |
| BASF SE | 21151 |
23 |
| Shell Oil Company | 2113 |
22 |
| Iogen Corporation | 152 |
22 |
| Element 1 Corp. | 42 |
20 |
| Johnson Matthey Public Limited Company | 1733 |
19 |
| Haldor Topsøe A/S | 639 |
18 |
| 8 Rivers Capital, LLC | 241 |
17 |
| Aramco Services Company | 4157 |
16 |
| Korea Institute of Energy Research | 873 |
15 |
| Other owners | 1000 |