- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres
Patent holdings for IPC class B01D 39/16
Total number of patents in this class: 2924
10-year publication summary
|
190
|
215
|
241
|
239
|
330
|
303
|
301
|
184
|
178
|
102
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hollingsworth & Vose Company | 301 |
137 |
| Donaldson Company, Inc. | 1607 |
125 |
| 3m Innovative Properties Company | 17481 |
96 |
| Nitto Denko Corporation | 8540 |
78 |
| Toray Industries, Inc. | 7111 |
70 |
| Daikin Industries, Ltd. | 10504 |
47 |
| Neenah Gessner GmbH | 95 |
43 |
| DelStar Technologies Inc. | 156 |
42 |
| MANN+HUMMEL GmbH | 1808 |
33 |
| Ahlstrom Oyj | 203 |
33 |
| LMS Technologies, Inc. | 43 |
32 |
| Amogreentech Co., Ltd. | 647 |
30 |
| JNC Corporation | 1548 |
26 |
| Ahlstrom-munksjo Oyj | 157 |
26 |
| E. I. du Pont de Nemours and Company | 3526 |
25 |
| Toyobo Co., Ltd. | 2539 |
25 |
| LG Electronics Inc. | 75818 |
22 |
| EMD Millipore Corporation | 631 |
21 |
| W. L. Gore & Associates, Inc. | 2715 |
21 |
| Toyobo MC Corporation | 534 |
18 |
| Other owners | 1974 |