- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 71/26 - Polyalkenes
Patent holdings for IPC class B01D 71/26
Total number of patents in this class: 696
10-year publication summary
|
43
|
57
|
53
|
54
|
76
|
62
|
58
|
57
|
72
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Entegris, Inc. | 1804 |
37 |
| Toray Industries, Inc. | 6843 |
29 |
| Teijin Limited | 1232 |
28 |
| FUJIFILM Corporation | 28506 |
24 |
| Celgard, LLC | 300 |
20 |
| PPG Industries Ohio, Inc. | 3443 |
18 |
| W. L. Gore & Associates, Inc. | 2685 |
14 |
| 3m Innovative Properties Company | 17955 |
13 |
| Nitto Denko Corporation | 8073 |
11 |
| Toray Tonen Specialty Separator Godo Kaisha | 22 |
11 |
| DIC Corporation | 3659 |
10 |
| Asahi Kasei Chemicals Corporation | 722 |
9 |
| Asahi Kasei Kabushiki Kaisha | 2560 |
9 |
| LG Chem, Ltd. | 17632 |
7 |
| Mitsubishi Rayon Co., Ltd. | 949 |
7 |
| Astom Corporation | 33 |
7 |
| Cornell University | 3190 |
7 |
| Daramic, LLC | 214 |
7 |
| Tonen Chemical Corporation | 61 |
7 |
| Hydroxsys Holdings Limited | 13 |
7 |
| Other owners | 414 |