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:
Mar. 21, 1989
Filed:
Oct. 16, 1987
Applicant:
Inventor:
Tomotaka Ozeki, Takatsuki, JP;
Assignee:
Hitachi Maxell, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ; G11C / ;
U.S. Cl.
CPC ...
360133 ; 369272 ; 369273 ; 369291 ; 365122 ;
Abstract
Disclosed is a composite memory device which comprises a recording disc medium having a large number of recording tracks to and from which data is written and read, a housing for holding the recording disc medium, a rewritable semiconductor memory disposed within a portion of the housing, and pins disposed within a portion of the housing for transferring data between the semiconductor memory and an external device.