- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/52 - Polyethers
Patent holdings for IPC class B01D 71/52
Total number of patents in this class: 524
10-year publication summary
|
61
|
35
|
53
|
45
|
29
|
55
|
38
|
42
|
35
|
40
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 21334 |
21 |
| Toray Industries, Inc. | 7167 |
20 |
| Toyobo Co., Ltd. | 2570 |
20 |
| Nitto Denko Corporation | 8642 |
19 |
| Asahi Kasei Kabushiki Kaisha | 2876 |
19 |
| FUJIFILM Corporation | 30849 |
14 |
| Saudi Arabian Oil Company | 14416 |
14 |
| 3m Innovative Properties Company | 17455 |
11 |
| FUJIFILM Manufacturing Europe B.V. | 219 |
11 |
| SHPP Global Technologies B.V. | 1112 |
10 |
| Sumitomo Chemical Company, Limited | 8995 |
9 |
| SABIC Global Technologies B.V. | 4633 |
9 |
| Solventum Intellectual Properties Company | 3381 |
9 |
| Solvay Specialty Polymers USA, LLC | 503 |
8 |
| Board of Regents, The University of Texas System | 6206 |
7 |
| Hydroxsys Holdings Limited | 14 |
7 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4152 |
6 |
| Pall Corporation | 342 |
6 |
| Centre National de La Recherche Scientifique | 11143 |
5 |
| Massachusetts Institute of Technology | 10324 |
5 |
| Other owners | 294 |