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:
Nov. 08, 1994
Filed:
Jan. 15, 1992
Applicant:
Inventors:
Markus J Bulters, Sittard, NL;
Hans K Van Dijk, Santa Barbara, CA (US);
Ronald M Schellekens, Meerssen, NL;
Assignee:
DSM N.V., , NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J / ; B32B / ;
U.S. Cl.
CPC ...
521 54 ; 521 53 ; 521918 ; 4283155 ; 4283157 ; 4283159 ;
Abstract
A microporous film with improved resistance to elevated temperatures from a first, thermoplastic polymer, the internal and external surfaces of the film being provided with a continuous coating layer of a second polymer having a higher softening temperature than the first polymer and process for coating a film of a first polymer with a layer of a second polymer.