- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/34 - Polyvinylidene fluoride
Patent holdings for IPC class B01D 71/34
Total number of patents in this class: 741
10-year publication summary
|
48
|
56
|
49
|
74
|
73
|
58
|
59
|
58
|
27
|
25
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6978 |
52 |
| Asahi Kasei Kabushiki Kaisha | 2686 |
39 |
| Arkema Inc. | 1067 |
18 |
| Arkema France | 4168 |
15 |
| Nitto Denko Corporation | 8295 |
14 |
| W. L. Gore & Associates, Inc. | 2722 |
12 |
| Asahi Kasei Medical Co., Ltd. | 264 |
11 |
| EMD Millipore Corporation | 650 |
10 |
| Kuraray Co., Ltd. | 3516 |
10 |
| Solvay Specialty Polymers Italy S.p.A. | 758 |
10 |
| Centre National de La Recherche Scientifique | 10531 |
9 |
| Lotte Chemical Corporation | 731 |
9 |
| JNC Corporation | 1563 |
8 |
| Kureha Corporation | 1033 |
8 |
| Tianjin Polytechnic University | 37 |
8 |
| FUJIFILM Corporation | 29586 |
7 |
| California Institute of Technology | 3986 |
7 |
| Daikin Industries, Ltd. | 10071 |
7 |
| Mitsubishi Rayon Co., Ltd. | 902 |
7 |
| Amogreentech Co., Ltd. | 617 |
7 |
| Other owners | 473 |