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:
Dec. 14, 2010
Filed:
Sep. 13, 2007
Akiko Hirao, Chiba-ken, JP;
Kazuki Matsumoto, Kanagawa-ken, JP;
Rumiko Hayase, Kanagawa-ken, JP;
Norikatsu Sasao, Tokyo, JP;
Takahiro Kamikawa, Kanagawa-ken, JP;
Akiko Hirao, Chiba-ken, JP;
Kazuki Matsumoto, Kanagawa-ken, JP;
Rumiko Hayase, Kanagawa-ken, JP;
Norikatsu Sasao, Tokyo, JP;
Takahiro Kamikawa, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An optical recording medium includes a first substrate having a groove on the side of an outer peripheral portion thereof; a second substrate in contact with the first substrate in the outer peripheral portion; and a recording layer being disposed in a gap between the first substrate and the second substrate and forming a void in cooperation with the first substrate at the portion of the groove.