- All sections
- B - Performing operations; transporting
- 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: 389
10-year publication summary
|
36
|
33
|
24
|
43
|
43
|
43
|
42
|
48
|
40
|
10
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Caterpillar Inc. | 8877 |
24 |
| Cummins Filtration IP, Inc. | 812 |
14 |
| Repligen Corporation | 258 |
13 |
| Adey Holdings (2008) Limited | 322 |
11 |
| HYDAC Filtertechnik GmbH | 294 |
9 |
| Blue Skies Global LLC | 16 |
9 |
| Yamashin-filter Corp. | 115 |
8 |
| Robert Bosch GmbH | 40953 |
6 |
| Derrick Corporation | 230 |
6 |
| HYDAC Process Technology GmbH | 89 |
6 |
| Cytiva Sweden AB | 741 |
6 |
| EMD Millipore Corporation | 657 |
5 |
| Murata Manufacturing Co., Ltd. | 22355 |
5 |
| Donaldson Company, Inc. | 1513 |
5 |
| Georgia Tech Research Corporation | 2453 |
4 |
| MAHLE International GmbH | 2670 |
4 |
| M.P. Filtri S.p.A. | 23 |
4 |
| Dow Global Technologies LLC | 10147 |
3 |
| Stryker Corporation | 3864 |
3 |
| Hubb Filters, Inc. | 10 |
3 |
| Other owners | 241 |