- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 3/56 - Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
Patent holdings for IPC class C01B 3/56
Total number of patents in this class: 966
10-year publication summary
|
50
|
53
|
50
|
84
|
48
|
83
|
66
|
105
|
85
|
26
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
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 | 3515 |
83 |
| Uop LLC | 4083 |
38 |
| Air Products and Chemicals, Inc. | 1448 |
36 |
| Praxair Technology, Inc. | 1367 |
20 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
18 |
| Johnson Matthey Public Limited Company | 1852 |
17 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
16 |
| Linde Aktiengesellschaft | 1600 |
16 |
| Saudi Arabian Oil Company | 11322 |
15 |
| Sawafuji Electric Co., Ltd. | 57 |
14 |
| Casale SA | 572 |
13 |
| Nederlandse Organisatie voor Toegepast-natuurwetenschappelijk Onderzoek TNO | 2362 |
13 |
| Osaka Gas Co., Ltd. | 312 |
13 |
| ThermoChem Recovery International, Inc. | 95 |
13 |
| ExxonMobil Research And Engineering Company | 2830 |
12 |
| Haldor Topsøe A/S | 698 |
12 |
| Topsoe A/S | 732 |
12 |
| L'Air Liquide, Societe Anonyme pour L'etude et L'exploitation des Proced ES Georges Claude | 296 |
11 |
| Sumitomo Seika Chemicals Co., Ltd. | 1028 |
11 |
| Linde GmbH | 1122 |
11 |
| Other owners | 572 |