- 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: 405
10-year publication summary
|
33
|
32
|
40
|
56
|
33
|
49
|
37
|
36
|
25
|
15
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| MANN+HUMMEL GmbH | 1682 |
29 |
| Donaldson Company, Inc. | 1513 |
28 |
| HYDAC Filtertechnik GmbH | 294 |
24 |
| Cummins Filtration IP, Inc. | 812 |
22 |
| Caterpillar Inc. | 8877 |
17 |
| MAHLE International GmbH | 2670 |
10 |
| Ufi Filters S.p.A. | 196 |
9 |
| HYDAC Process Technology GmbH | 89 |
8 |
| Pall Corporation | 392 |
7 |
| Hengst SE | 126 |
7 |
| Midea Group Co., Ltd. | 4025 |
6 |
| Strauss Water Ltd. | 90 |
5 |
| Yamashin-filter Corp. | 115 |
5 |
| Foshan Shunde Midea Water Dispenser Manufacturing Co., Ltd. | 74 |
5 |
| Cummins Filtration Inc. | 171 |
4 |
| M.P. Filtri S.p.A. | 23 |
4 |
| Parker Intangibles LLC | 1237 |
4 |
| Ufi Innovation Center S.r.l. | 62 |
4 |
| Filtration Group GmbH | 19 |
4 |
| Unilever PLC | 3540 |
3 |
| Other owners | 200 |