- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 29/58 - 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 arranged concentrically or coaxially
Patent holdings for IPC class B01D 29/58
Total number of patents in this class: 436
10-year publication summary
|
31
|
40
|
57
|
33
|
48
|
37
|
36
|
26
|
37
|
20
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Donaldson Company, Inc. | 1605 |
31 |
| MANN+HUMMEL GmbH | 1768 |
30 |
| HYDAC Filtertechnik GmbH | 295 |
25 |
| Cummins Filtration IP, Inc. | 805 |
23 |
| Caterpillar Inc. | 9640 |
20 |
| MAHLE International GmbH | 2794 |
10 |
| HYDAC Process Technology GmbH | 92 |
8 |
| M.P. Filtri S.p.A. | 34 |
8 |
| Pall Corporation | 335 |
7 |
| Ufi Filters S.p.A. | 195 |
7 |
| Yamashin-filter Corp. | 128 |
7 |
| Hengst SE | 165 |
7 |
| Midea Group Co., Ltd. | 4612 |
6 |
| Strauss Water Ltd. | 92 |
5 |
| Foshan Shunde Midea Water Dispenser Manufacturing Co., Ltd. | 80 |
5 |
| Cummins Filtration Inc. | 199 |
4 |
| Parker Intangibles LLC | 1160 |
4 |
| Trustees of Tufts College | 888 |
4 |
| Ufi Innovation Center S.r.l. | 68 |
4 |
| Filtration Group GmbH | 18 |
4 |
| Other owners | 217 |