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:
May. 06, 1980
Filed:
Nov. 24, 1978
Applicant:
Inventors:
Clifton L Kehr, Silver Spring, MD (US);
Louis L Wood, Rockville, MD (US);
Nelson S Marans, Silver Spring, MD (US);
Glenn E Fulmer, Clarksville, MD (US);
Assignee:
W. R. Grace & Co., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521137 ; 521905 ;
Abstract
The invention disclosed relates to hydrophilic polyurethane foam which exhibits improved tensile and tear properties and reduced shrinkage upon drying as a result of incorporation of substantially hydrophilic reinforcing fibers formed from homopolymers and copolymers of polyvinyl alcohol. The reinforced foams also exhibit reduced swelling upon contact with water.