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:
Sep. 15, 1981
Filed:
Oct. 26, 1978
Applicant:
Inventor:
Eckhard C Schwarz, Neenah, WI (US);
Assignee:
Biax Fiberfilm Corp., Neenah, WI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
428542 ; 428357 ; 428905 ; 428907 ; 428910 ;
Abstract
There is disclosed a novel apparatus for the selective stretching of a coated or impregnated substrate of a synthetic thermoplastic polymer or blends thereof to form an impregnated microporous film thereof.