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:
Jul. 12, 1983
Filed:
Sep. 15, 1981
Applicant:
Inventor:
Klaus Schmidt, Kaiserslautern, DE;
Assignee:
Firma Carl Freudenberg, Weinheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55524 ; 55528 ; 210506 ; 428375 ; 428378 ; 428903 ;
Abstract
A filter packing of electrostatically spray formed microfibers, the structure of which is a foamed coating layer containing open cell pores completely surrounding a nonporous fiber core. The pores extend perpendicularly through the foamed coating and have a substantially uniform distribution in cross section. The foamed coating and the fiber core are made of the same polymer composition.