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:
Sep. 10, 1985
Filed:
Jan. 09, 1984
Applicant:
Inventor:
Charles H Sherwood, Upland, CA (US);
Assignee:
Hughes Aircraft Company, El Segundo, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D04H / ; D04H / ;
U.S. Cl.
CPC ...
428283 ; 2-2 ; 2243 / ; 55524 ; 55527 ; 55528 ; 264 23 ; 264233 ; 427 57 ; 428244 ; 428288 ; 428297 ; 4283115 ; 4283177 ; 4283179 ; 428323 ; 428329 ; 428331 ; 428372 ; 428408 ; 428902 ;
Abstract
A flexible, air permeable composite highly effective as a highly absorbent fiber filter, suitable for high throughput, low pressure drop applications. The composites and filters use a non-woven fabric substrate, in conjunction with organic polymer fibers, such as polypropylene fibers, formed in-situ from a solvent solution of the polymer, with solid particles such as carbon particles interstitially positioned within the mass, and forming a unique microstructure by the interaction of the flexible non-woven fibers and the polymer fibers. A method of entrapping small sorptive particles within such filters is also provided.