- 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: 1619
10-year publication summary
|
79
|
85
|
74
|
81
|
84
|
153
|
147
|
171
|
187
|
54
|
| 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 | 4079 |
96 |
| Saudi Arabian Oil Company | 13981 |
58 |
| Uop LLC | 4346 |
48 |
| ExxonMobil Research And Engineering Company | 2452 |
40 |
| Topsoe A/S | 1022 |
40 |
| Shell Internationale Research Maatschappij B.V. | 3435 |
37 |
| Praxair Technology, Inc. | 1234 |
36 |
| Air Products and Chemicals, Inc. | 1472 |
35 |
| Linde GmbH | 1350 |
32 |
| BASF SE | 21185 |
24 |
| Casale SA | 634 |
24 |
| Linde Aktiengesellschaft | 1430 |
23 |
| Shell Oil Company | 2084 |
22 |
| Element 1 Corp. | 42 |
20 |
| Johnson Matthey Public Limited Company | 1762 |
18 |
| Haldor Topsøe A/S | 637 |
18 |
| 8 Rivers Capital, LLC | 236 |
17 |
| Aramco Services Company | 4166 |
17 |
| Iogen Corporation | 157 |
17 |
| Korea Institute of Energy Research | 890 |
15 |
| Other owners | 982 |