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:
Oct. 31, 1989
Filed:
Dec. 18, 1987
Applicant:
Inventors:
Masami Uchida, Hirakata, JP;
Seiko Minamide, Nara, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
1562737 ; 1562757 ; 156295 ; 427 541 ; 427231 ; 427240 ;
Abstract
Bonding of a protection sheet on the substrate of the information storing disk is made by revolving the substrate and the protection film with viscous adhesive applied therebetween, to spread it by centrifugal force, and, after slowing down the rotation speed, UV light is irradiated through the protection film to harden the adhesive.