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:
Aug. 23, 2005
Filed:
Mar. 28, 2002
Applicants:
Daiki Kobayashi, Miyagi, JP;
Hideyo Ishikawa, Kanagawa, JP;
Hiroshige Takakuwa, Kanagawa, JP;
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B023/03 ;
U.S. Cl.
CPC ...
Abstract
An information recording medium cartridge with a disc, a cartridge casing having the disc accommodated therein, and a shutter slidably mounted to the cartridge casing. The shutter has a first shutter plate for opening and closing a recording and/or reproducing opening of the cartridge casing and a second shutter plate for opening and closing the recording and/or reproducing opening on another side. The first and second shutter plates are independently movable between first and second positions for closing and opening the recording and/or reproducing openings.