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:
Jul. 18, 1978
Filed:
Sep. 30, 1976
Applicant:
Inventor:
Michael E Gordon, Wayland, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428189 ; 40-22 ; 283-7 ; 283 / ; 156228 ; 156327 ; 156331 ; 428192 ; 428203 ; 428483 ; 428916 ;
Abstract
Novel products including I.D. cards or I.D. credit cards and laminar assemblies useful in preparing same. Essentially, the invention resides in the discovery that a layer comprising specific ethylene copolymers or mixtures thereof and a layer comprising a hydroxylated polymer can function as especially effective heat-activatable adhesive systems for such products. The invention also presents processes for I.D. cards and I.D. credit cards.