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. 01, 1991
Filed:
Jul. 20, 1990
Applicant:
Inventors:
Jack D Booze, Wilmington, DE (US);
Pallatheri M Subramanian, Wilmington, DE (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29D / ; B29K / ;
U.S. Cl.
CPC ...
428 366 ; 264171 ; 2642101 ; 2642902 ; 428 354 ; 428 357 ; 428 3692 ; 4284755 ; 428910 ; 525179 ; 525183 ; 525184 ;
Abstract
A laminar article of a base polyolefin, a condensation polymer incompatible with the base polyolefin and an alkylcarboxyl-substituted polyolefin is stretched 2 to 6 times its dimensions above a temperature at which a significant portion of the crystals of the base polyolefin have melted and below a temperature at which all of the crystals have melted.