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:
Jan. 01, 1980
Filed:
Sep. 01, 1978
Applicant:
Inventors:
Brian H Williams, White Bear Lake, MN (US);
J Lamar Zollinger, Maplewood, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; G02B / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
428216 ; 350103 ; 350105 ; 428325 ; 428413 ; 428414 ; 428447 ; 428451 ; 428452 ; 428510 ; 428520 ; 428522 ;
Abstract
The ability to withstand weathering by acrylic substrates having an abrasion resistant coating comprising a cured epoxy-terminated silane on the surface thereof is improved by using a particular primer composition between the coating and the substrate. The primer comprises a mixture of an acrylic polymer and cellulose esters of carboxylic acids.