- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 71/64 - Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
Patent holdings for IPC class B01D 71/64
Total number of patents in this class: 777
10-year publication summary
|
88
|
81
|
75
|
74
|
66
|
55
|
52
|
52
|
46
|
14
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 27102 |
90 |
| Uop LLC | 4083 |
66 |
| FUJIFILM Manufacturing Europe B.V. | 271 |
27 |
| Dow Global Technologies LLC | 10147 |
26 |
| Georgia Tech Research Corporation | 2453 |
26 |
| King Abdullah University of Science and Technology | 1703 |
26 |
| Nitto Denko Corporation | 7879 |
25 |
| Saudi Arabian Oil Company | 11322 |
22 |
| Tokyo Ohka Kogyo Co., Ltd. | 1481 |
20 |
| Chevron U.S.A. Inc. | 3774 |
16 |
| Global Life Sciences Solutions USA LLC | 473 |
15 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
12 |
| Evonik Operations GmbH | 3879 |
12 |
| Toray Industries, Inc. | 6652 |
11 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
10 |
| FUJIFILM Imaging Colorants Limited | 233 |
10 |
| Sumitomo Chemical Company, Limited | 8808 |
9 |
| Entegris, Inc. | 1736 |
9 |
| ExxonMobil Research And Engineering Company | 2830 |
8 |
| Aramco Services Company | 3504 |
8 |
| Other owners | 329 |