- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 29/56 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups ; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
Patent holdings for IPC class B01D 29/56
Total number of patents in this class: 374
10-year publication summary
|
57
|
47
|
43
|
52
|
48
|
47
|
44
|
36
|
39
|
13
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Caterpillar Inc. | 8877 |
16 |
| Sartorius Stedim Biotech GmbH | 774 |
8 |
| Cummins Filtration IP, Inc. | 812 |
7 |
| Hollingsworth & Vose Company | 274 |
7 |
| Whirlpool Corporation | 4238 |
6 |
| Filtran LLC | 29 |
6 |
| Schlumberger Technology Corporation | 9690 |
5 |
| LG Electronics Inc. | 69257 |
5 |
| Advanced Drainage Systems, Inc. | 304 |
5 |
| Samsung Electronics Co., Ltd. | 131630 |
4 |
| EMD Millipore Corporation | 657 |
4 |
| Ai Cure Technologies LLC | 35 |
4 |
| Entegris, Inc. | 1736 |
4 |
| IBS Filtran Kunststoff / Metallerzeugnisse GmbH | 27 |
4 |
| Ufi Filters S.p.A. | 196 |
4 |
| Redwire Space, Inc. | 33 |
4 |
| Donaldson Company, Inc. | 1513 |
3 |
| Haier US Appliance Solutions, Inc. | 3178 |
3 |
| HYDAC Process Technology GmbH | 89 |
3 |
| MANN+HUMMEL GmbH | 1682 |
3 |
| Other owners | 269 |