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. 19, 1988
Filed:
Mar. 28, 1986
Applicant:
Inventors:
Kenryo Namba, Tokyo, JP;
Shigeru Asami, Tokyo, JP;
Toshiki Aoi, Chiba, JP;
Kazuo Takahashi, Chiba, JP;
Noriko Takeda, Tokyo, JP;
Mamoru Usami, Chiba, JP;
Akihiko Kuroiwa, Kanagawa, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346137 ; 369283 ;
Abstract
An optical recording disk wherein information is written and reproduced through the application of recording and reading laser beams is assembled by preparing a pair of circular substrates which each are provided with a plurality of studs or spikes on outer and/or inner circumferential band, forming a recording layer of dye on each substrate, and joining the substrates together through the studs by ultrasonic sealing or adhesive bonding such that the recording layers face one another via an interior space.