- 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
|
78
|
84
|
73
|
80
|
82
|
155
|
143
|
165
|
194
|
71
|
| 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 | 4120 |
95 |
| Saudi Arabian Oil Company | 14275 |
59 |
| Uop LLC | 4388 |
49 |
| Topsoe A/S | 1053 |
41 |
| ExxonMobil Research And Engineering Company | 2407 |
40 |
| Shell Internationale Research Maatschappij B.V. | 3397 |
36 |
| Praxair Technology, Inc. | 1219 |
34 |
| Air Products and Chemicals, Inc. | 1474 |
33 |
| Linde GmbH | 1369 |
30 |
| Casale SA | 636 |
26 |
| Linde Aktiengesellschaft | 1421 |
23 |
| BASF SE | 21318 |
22 |
| Shell Oil Company | 2067 |
22 |
| Element 1 Corp. | 43 |
20 |
| Haldor Topsøe A/S | 636 |
18 |
| 8 Rivers Capital, LLC | 232 |
17 |
| Aramco Services Company | 4194 |
17 |
| Iogen Corporation | 161 |
17 |
| Johnson Matthey Davy Technologies Limited | 528 |
16 |
| Johnson Matthey Public Limited Company | 1761 |
15 |
| Other owners | 989 |