- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 29/90 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor having feed or discharge devices for feeding
Patent holdings for IPC class B01D 29/90
Total number of patents in this class: 441
10-year publication summary
|
31
|
23
|
42
|
41
|
43
|
42
|
45
|
40
|
32
|
26
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Caterpillar Inc. | 9730 |
24 |
| Cummins Filtration IP, Inc. | 805 |
14 |
| Repligen Corporation | 292 |
14 |
| Adey Holdings (2008) Limited | 325 |
11 |
| Blue Skies Global LLC | 19 |
10 |
| HYDAC Filtertechnik GmbH | 295 |
9 |
| M.P. Filtri S.p.A. | 34 |
8 |
| Yamashin-filter Corp. | 127 |
8 |
| Derrick Corporation | 249 |
7 |
| EMD Millipore Corporation | 642 |
6 |
| Robert Bosch GmbH | 43034 |
6 |
| HYDAC Process Technology GmbH | 92 |
6 |
| Cytiva Sweden AB | 771 |
6 |
| Murata Manufacturing Co., Ltd. | 24971 |
5 |
| Donaldson Company, Inc. | 1589 |
5 |
| MAHLE International GmbH | 2828 |
5 |
| Georgia Tech Research Corporation | 2820 |
4 |
| MST NL B.V. | 4 |
4 |
| Dow Global Technologies LLC | 10518 |
3 |
| Stryker Corporation | 5089 |
3 |
| Other owners | 283 |