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:
May. 08, 1990
Filed:
Feb. 16, 1989
Applicant:
Inventors:
Assignee:
Somar Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 40 ; 428412 ; 428483 ; 4284763 ; 428522 ; 524 30 ; 524 32 ;
Abstract
A lightsafe masking film is disclosed which comprises a substrate, and a peelable lightsafe layer provided over the surface of the substrate and including a lightsafe substance, a copolymer containing vinyl chloride, and a mixture of a first nitrile rubber containing 25-30% by weight of acrylonitrile and a second nitrile rubber containing 31-35% by weight of acrylonitrile.