- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/64 - PolyimidesPolyamide-imidesPolyester-imidesPolyamide acids or similar polyimide precursors
Patent holdings for IPC class B01D 71/64
Total number of patents in this class: 838
10-year publication summary
|
75
|
74
|
66
|
54
|
52
|
52
|
49
|
48
|
28
|
37
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 30628 |
69 |
| Uop LLC | 4397 |
63 |
| Nitto Denko Corporation | 8565 |
33 |
| Saudi Arabian Oil Company | 14329 |
28 |
| Yestar Advanced Materials (HK) Co., Limited | 42 |
28 |
| King Abdullah University of Science and Technology | 1867 |
27 |
| Tokyo Ohka Kogyo Co., Ltd. | 1565 |
27 |
| Georgia Tech Research Corporation | 2964 |
25 |
| Dow Global Technologies LLC | 11008 |
24 |
| Chevron U.S.A. Inc. | 4162 |
17 |
| Global Life Sciences Solutions USA LLC | 529 |
15 |
| FUJIFILM Manufacturing Europe B.V. | 221 |
13 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4122 |
13 |
| Asahi Kasei Kabushiki Kaisha | 2847 |
11 |
| Entegris, Inc. | 2016 |
11 |
| Toray Industries, Inc. | 7143 |
10 |
| FUJIFILM Imaging Colorants Limited | 192 |
10 |
| Aramco Services Company | 4192 |
9 |
| Sumitomo Chemical Company, Limited | 8969 |
8 |
| Evonik Operations GmbH | 4395 |
8 |
| Other owners | 389 |