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:
Feb. 01, 2000
Filed:
Sep. 30, 1997
Hideyuki Irie, Yokohama, JP;
Takeshi Hagio, Yokohama, JP;
Minami Amano, Ageo, JP;
Mikio Mori, Kamakura, JP;
Takashi Tomita, Mishima, JP;
Keiji Kakinuma, Gotenba, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Toshiba-Emi Limited, Tokyo, JP;
Abstract
Indication members provided around a central hole in a disk does not adversely affect reference surfaces to be clamped, and clear, stable indication is maintained. For this purpose, first and second optical disks having annular light transmissive disk substrates with a common central hole, one surface of each of which light transmissive disk substrates is provided with a reflection film, are attached to each other as one body with an adhesive layer interposed therebetween, such that the reflection films opposed each other, thereby forming a compound optical disk. Label members are provided from the reflection film side by printing or attachment on flat portions surrounding the central hole.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile