- 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: 1608
10-year publication summary
|
78
|
79
|
73
|
77
|
80
|
155
|
140
|
159
|
195
|
79
|
| 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 | 4148 |
92 |
| Saudi Arabian Oil Company | 14398 |
60 |
| Uop LLC | 4407 |
49 |
| Topsoe A/S | 1080 |
41 |
| ExxonMobil Research And Engineering Company | 2389 |
40 |
| Shell Internationale Research Maatschappij B.V. | 3378 |
36 |
| Air Products and Chemicals, Inc. | 1476 |
32 |
| Linde GmbH | 1386 |
31 |
| Praxair Technology, Inc. | 1203 |
30 |
| Casale SA | 638 |
26 |
| Linde Aktiengesellschaft | 1410 |
23 |
| BASF SE | 21334 |
22 |
| Shell Oil Company | 2054 |
22 |
| Element 1 Corp. | 43 |
20 |
| Iogen Corporation | 160 |
18 |
| Haldor Topsøe A/S | 629 |
18 |
| 8 Rivers Capital, LLC | 229 |
17 |
| Aramco Services Company | 4190 |
17 |
| Johnson Matthey Davy Technologies Limited | 540 |
16 |
| Johnson Matthey Public Limited Company | 1766 |
15 |
| Other owners | 983 |