- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 71/34 - Polyvinylidene fluoride
Patent holdings for IPC class B01D 71/34
Total number of patents in this class: 727
10-year publication summary
|
56
|
49
|
57
|
51
|
74
|
79
|
59
|
60
|
59
|
11
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6652 |
47 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
39 |
| Arkema Inc. | 1075 |
17 |
| Nitto Denko Corporation | 7879 |
15 |
| Kureha Corporation | 1026 |
14 |
| Arkema France | 3790 |
13 |
| W. L. Gore & Associates, Inc. | 2600 |
12 |
| Centre National de La Recherche Scientifique | 9632 |
11 |
| Asahi Kasei Medical Co., Ltd. | 308 |
11 |
| Solvay Specialty Polymers Italy S.p.A. | 704 |
11 |
| Kuraray Co., Ltd. | 3392 |
10 |
| EMD Millipore Corporation | 657 |
9 |
| JNC Corporation | 1527 |
8 |
| Lotte Chemical Corporation | 591 |
8 |
| Solvay SA | 1181 |
8 |
| Tianjin Polytechnic University | 38 |
8 |
| FUJIFILM Corporation | 27102 |
7 |
| Daikin Industries, Ltd. | 9495 |
7 |
| Mitsubishi Rayon Co., Ltd. | 1003 |
7 |
| Amogreentech Co., Ltd. | 566 |
7 |
| Other owners | 458 |