- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 53/22 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by diffusion
Patent holdings for IPC class B01D 53/22
Total number of patents in this class: 4849
10-year publication summary
|
364
|
389
|
361
|
350
|
345
|
319
|
348
|
332
|
352
|
192
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 29350 |
149 |
| NGK Insulators, Ltd. | 4949 |
141 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3976 |
140 |
| Saudi Arabian Oil Company | 13091 |
134 |
| Uop LLC | 4244 |
103 |
| Nitto Denko Corporation | 8230 |
85 |
| Dow Global Technologies LLC | 10352 |
75 |
| Membrane Technology and Research, Inc. | 90 |
63 |
| FUJIFILM Manufacturing Europe B.V. | 269 |
60 |
| Georgia Tech Research Corporation | 2729 |
57 |
| Sumitomo Chemical Company, Limited | 9047 |
56 |
| Air Products and Chemicals, Inc. | 1423 |
49 |
| Hamilton Sundstrand Corporation | 4865 |
48 |
| Air Liquide Advanced Technologies U.S. LLC | 89 |
47 |
| Chevron U.S.A. Inc. | 3953 |
43 |
| Praxair Technology, Inc. | 1299 |
40 |
| Renaissance Energy Research Corporation | 60 |
40 |
| Aramco Services Company | 3955 |
39 |
| Mitsubishi Chemical Corporation | 4498 |
38 |
| King Abdullah University of Science and Technology | 1776 |
37 |
| Other owners | 3405 |