- All sections
- B - Performing operations; transporting
- 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: 416
10-year publication summary
|
32
|
40
|
57
|
33
|
49
|
38
|
36
|
26
|
34
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Donaldson Company, Inc. | 1576 |
31 |
| MANN+HUMMEL GmbH | 1722 |
29 |
| HYDAC Filtertechnik GmbH | 297 |
26 |
| Cummins Filtration IP, Inc. | 807 |
22 |
| Caterpillar Inc. | 9149 |
18 |
| MAHLE International GmbH | 2690 |
10 |
| HYDAC Process Technology GmbH | 90 |
8 |
| Ufi Filters S.p.A. | 198 |
8 |
| Pall Corporation | 346 |
7 |
| Hengst SE | 134 |
7 |
| Midea Group Co., Ltd. | 4285 |
6 |
| Strauss Water Ltd. | 92 |
5 |
| Yamashin-filter Corp. | 126 |
5 |
| Foshan Shunde Midea Water Dispenser Manufacturing Co., Ltd. | 74 |
5 |
| Cummins Filtration Inc. | 187 |
4 |
| M.P. Filtri S.p.A. | 26 |
4 |
| Parker Intangibles LLC | 1194 |
4 |
| Ufi Innovation Center S.r.l. | 66 |
4 |
| Filtration Group GmbH | 17 |
4 |
| Unilever PLC | 3333 |
3 |
| Other owners | 206 |