Patent · US Expired

Liquid filter

US7744758B2 · kind B2 · utility

44Cited by

13References

13Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Klemens Dworatzek · Trier, DE
Ralf Bauder · Ketsch, DE
Karlheinz Muenkel · Bretten, DE
Duc Cuong Nguyen · Laatzen, DE

Key dates

Filing date	Feb 15, 2006
Grant date	Jun 29, 2010
Priority date	—
Expiry date	Feb 26, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/4046
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A liquid filter, especially oil filter for an internal combustion engine, having a cup-shaped housing with a liquid inlet and a liquid outlet, a filter element arranged with a seal between the inlet and outlet, and a one-piece barrier membrane arranged in the area of the opening of the cup-shaped housing such that the liquid inlet and/or the liquid outlet can be closed by the barrier membrane.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.