- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/36 - Polytetrafluoroethene
Patent holdings for IPC class B01D 71/36
Total number of patents in this class: 780
10-year publication summary
|
61
|
65
|
57
|
59
|
78
|
56
|
67
|
55
|
55
|
31
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nitto Denko Corporation | 8338 |
86 |
| W. L. Gore & Associates, Inc. | 2726 |
72 |
| Sumitomo Electric Industries, Ltd. | 15647 |
43 |
| Sumitomo Electric Fine Polymer, Inc. | 201 |
38 |
| FUJIFILM Corporation | 29696 |
30 |
| Entegris, Inc. | 1898 |
26 |
| Daikin Industries, Ltd. | 10106 |
24 |
| Chongqing Runze Pharmaceutical Co., Ltd. | 77 |
24 |
| Donaldson Company, Inc. | 1605 |
21 |
| Asahi Kasei Kabushiki Kaisha | 2698 |
16 |
| Compact Membrane Systems, Inc. | 52 |
7 |
| Pall Corporation | 335 |
7 |
| W. L. Gore & Associates G.K. | 73 |
7 |
| FUJIFILM Electronic Materials U.S.A., Inc. | 333 |
6 |
| W.L. Gore & Associates GmbH | 234 |
6 |
| LG Chem, Ltd. | 17676 |
5 |
| Sumitomo Chemical Company, Limited | 9079 |
5 |
| Markel Corporation | 22 |
5 |
| Nomura Micro Science Co., Ltd. | 80 |
5 |
| Parker-Hannifin Corporation | 1042 |
5 |
| Other owners | 342 |