- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/38 - PolyalkenylalcoholsPolyalkenylestersPolyalkenylethersPolyalkenylaldehydesPolyalkenylketonesPolyalkenylacetalsPolyalkenylketals
Patent holdings for IPC class B01D 71/38
Total number of patents in this class: 348
10-year publication summary
|
28
|
35
|
23
|
34
|
31
|
29
|
19
|
21
|
15
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6891 |
27 |
| FUJIFILM Corporation | 29228 |
17 |
| Renaissance Energy Research Corporation | 60 |
14 |
| Nitto Denko Corporation | 8182 |
13 |
| Gambro Lundia AB | 1365 |
10 |
| Kuraray Co., Ltd. | 3490 |
9 |
| Toyobo Co., Ltd. | 2482 |
9 |
| Sumitomo Chemical Company, Limited | 9009 |
7 |
| Uop LLC | 4209 |
7 |
| Memphasys Ltd | 11 |
6 |
| Sumitomo Electric Industries, Ltd. | 15344 |
5 |
| Asahi Kasei Kabushiki Kaisha | 2636 |
5 |
| Asahi Kasei Medical Co., Ltd. | 295 |
5 |
| National University Corporation Kobe University | 519 |
5 |
| The Research Foundation for The State University of New York | 1603 |
5 |
| Yamaguchi University | 310 |
5 |
| The Regents of the University of California | 19812 |
4 |
| Ohio State Innovation Foundation | 2103 |
4 |
| SINTEF Tto AS | 134 |
4 |
| Teijin Limited | 1235 |
4 |
| Other owners | 183 |