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:
Dec. 08, 1981
Filed:
Feb. 01, 1980
Applicant:
Inventors:
Roger J Anderson, St. Paul, MN (US);
Donald J Kerfeld, St. Paul, MN (US);
Larry A Lien, Forest Lake, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428 65 ; 428 64 ; 428215 ; 428216 ; 428163 ; 428334 ; 428335 ; 428336 ; 428447 ; 428450 ; 428416 ; 428418 ; 264106 ; 264107 ; 369275 ; 369288 ; 369284 ; 3581285 ; 346 / ; 346 / ; 3461351 ; 346137 ;
Abstract
An information carrying element comprising a substrate having adhered to at least one surface thereof a separate layer having a thickness of 1.0 to 100 microns and a circular or spiral pattern of surface variations provides a particularly useful element when said separate layer comprises an abrasion resistant polymer layer derived from 30 to 100% by weight of an epoxy-terminated silane.