- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/32 - Polyalkenyl halides containing fluorine atoms
Patent holdings for IPC class B01D 71/32
Total number of patents in this class: 453
10-year publication summary
|
48
|
38
|
52
|
25
|
20
|
27
|
20
|
10
|
17
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 30594 |
25 |
| W. L. Gore & Associates, Inc. | 2723 |
21 |
| Compact Membrane Systems, Inc. | 56 |
20 |
| Toray Industries, Inc. | 7139 |
17 |
| Solvay Specialty Polymers Italy S.p.A. | 654 |
16 |
| Nitto Denko Corporation | 8558 |
15 |
| Membrane Technology and Research, Inc. | 90 |
14 |
| Sumitomo Electric Fine Polymer, Inc. | 201 |
14 |
| Asahi Kasei Kabushiki Kaisha | 2840 |
13 |
| Entegris, Inc. | 2011 |
10 |
| Daikin Industries, Ltd. | 10502 |
9 |
| Sumitomo Chemical Company, Limited | 8968 |
8 |
| Pall Corporation | 338 |
8 |
| 3m Innovative Properties Company | 17458 |
7 |
| Sumitomo Electric Industries, Ltd. | 16448 |
7 |
| Yestar Advanced Materials (HK) Co., Limited | 42 |
7 |
| Uop LLC | 4390 |
6 |
| Arkema Inc. | 1060 |
6 |
| DIC Corporation | 3974 |
6 |
| LG Chem, Ltd. | 17950 |
5 |
| Other owners | 219 |