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:
Jan. 30, 1990
Filed:
Jan. 26, 1988
Hiromi Someya, Kawasaki, JP;
Yasushi Kuramoto, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A data identifying system for identifying information recorded in a recording medium comprises: a discriminable card like a credit card having a magnetic stripe; a memory medium like an optical ROM card having an accident card list in which data regarding invalid cards (accident cards) is stored; a first reading unit to read the data stored in the memory medium; a discriminating circuit to discriminate whether the card is invalid or not on the basis of an output of the reading unit; a circuit to inform the fact that the card is invalid when it is decided to be invalid; and a second reading unit to read the data recorded on the card.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile