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:
Oct. 25, 1988
Filed:
Aug. 08, 1986
Applicant:
Inventors:
Shigeyuki Kawana, Tokyo, JP;
Harumi Nakano, Tokyo, JP;
Assignee:
Casio Computer Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
235380 ; 235492 ; 235437 ; 365200 ; 371 10 ;
Abstract
When data is written in a predetermined memory area of a data memory in an IC card, a comparator checks whether the data before writing and data actually written in the data memory coincide. In the event of non-coincidence of the compared data, the data to be written is written in a different memory area of the data memory.
Kawana, Shigeyuki. (1988). Ic card (U.S. Patent No. 4780602). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4780602
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile