The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2003
Filed:
Apr. 24, 2002
Applicant:
Inventors:
Assignee:
Carl Freudenberg KG, Weinheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B03C 3/155 ;
U.S. Cl.
CPC ...
B03C 3/155 ;
Abstract
A multi-layer air filter is described, including a filter layer which is covered by a prefilter layer on the dust-laden gas side, which has a laid dry electrostatically effective nonwoven fabric, preferably a staple fiber nonwoven fabric, whose area weight is 10 through 100 g/m . In particular, the filter may be used as a vacuum cleaner bag.
Quick Actions:
Schultheiss, Wolfram. (2003). Air filter having electrostatically active nonwoven fabric inliners and their use (U.S. Patent No. 6669761). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6669761
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile