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:
Aug. 03, 1999
Filed:
Jun. 08, 1998
Applicant:
Inventors:
David Charles Jones, Midlothian, VA (US);
Stasys Kestutis Rudys, Midlothian, VA (US);
Charles Benjamin Simon, Blue Bell, PA (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428198 ; 428102 ; 428137 ; 428192 ; 428910 ; 442334 ; 442364 ; 442382 ; 442389 ; 442401 ;
Abstract
A nonwoven bulky composite sheet material has first and second vapor permeable layers on opposite sides of a third layer of a bulky, flexible material. The third layer has a thickness in the range of 0.3 to 3.0 mm before being bonded between said first and second layers. The first layer, the second layer and the third layer are bonded together to form a flexible composite sheet with a thickness of at least 0.3 3 mm and a moisture vapor transmission of at least 100 g/m.sup.2 in 24 hours.