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. 15, 1990
Filed:
Dec. 15, 1988
Applicant:
Inventors:
Naohiko Kiryu, Urawa, JP;
Kazutoshi Kimizuka, Kitakatsushika, JP;
Etsuko Minezaki, Misato, JP;
Hiroshi Maruyama, Misato, JP;
Assignee:
Somar Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B30B / ;
U.S. Cl.
CPC ...
428 40 ; 428412 ; 428333 ; 428483 ; 4284763 ; 428500 ;
Abstract
A lightsafe masking film for use in masking a roomlight film is disclosed which comprises a substrate, and a transparent, lightsafe layer peelably provided over the surface of the substrate and containing a combination of specific yellow and blue colorants so that the lightsafe layer is green or light green in color but can effectively block light to which the roomlight film is sensitive.