- 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: 369
10-year publication summary
|
35
|
23
|
34
|
31
|
29
|
22
|
21
|
14
|
19
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7045 |
29 |
| FUJIFILM Corporation | 30277 |
17 |
| Renaissance Energy Research Corporation | 63 |
14 |
| Nitto Denko Corporation | 8470 |
13 |
| Toyobo Co., Ltd. | 2520 |
11 |
| Gambro Lundia AB | 1352 |
10 |
| Kuraray Co., Ltd. | 3568 |
9 |
| Sumitomo Electric Industries, Ltd. | 16113 |
8 |
| Sumitomo Chemical Company, Limited | 9055 |
7 |
| Uop LLC | 4315 |
7 |
| Ohio State Innovation Foundation | 2314 |
6 |
| Memphasys Ltd | 11 |
6 |
| Asahi Kasei Kabushiki Kaisha | 2783 |
5 |
| Asahi Kasei Medical Co., Ltd. | 234 |
5 |
| National University Corporation Kobe University | 559 |
5 |
| Yamaguchi University | 321 |
5 |
| The Regents of the University of California | 20556 |
4 |
| Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation | 294 |
4 |
| China Petroleum & Chemical Corporation | 2059 |
4 |
| The Research Foundation for The State University of New York | 1714 |
4 |
| Other owners | 196 |