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:
Oct. 13, 1998
Filed:
May. 23, 1997
Applicant:
Inventor:
William F Murphy, Jr, Wilmington, DE (US);
Assignee:
Reemay, Inc., Old Hickory, TN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
553853 ; 55521 ; 55524 ; 55527 ; 55528 ; 55DI / ;
Abstract
A composite nonwoven fabric suitable for undergoing pleating to form filtration media includes two nonwoven fabric layers which are adhesively bonded. One layer is an air permeable nonwoven web of continuous filaments. A high loft nonwoven batt of staple fibers is laminated to the nonwoven web layer. The nonwoven batt has a gradient fiber density and includes a first layer of relatively low denier fibers and a second layer of relatively higher denier fibers.