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:
Apr. 23, 1991
Filed:
Jul. 18, 1989
Applicant:
Inventors:
Hiroshi Maruyama, Misato, JP;
Naohiko Kiryu, Urawa, JP;
Etsuko Minezaki, Misato, JP;
Susumu Tagashira, Koshigaya, JP;
Hisashi Shimokawahara, Chiba, JP;
Assignee:
Somar Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428 40 ; 428195 ; 428401 ; 428532 ;
Abstract
A lightsafe masking film is disclosed which comprises a substrate, a pressure sensitive adhesive layer formed on the substrate, and a lightsafe, peelable layer formed on the adhesive layer and including a dialkyl phthalate, nitrocellulose, a lightsafe colorant and, optionally, a filler and a nitrile rubber. The peelable layer further suitably contains a dialkyl ester of an aliphatic dicarboxylic acid.