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:
Jun. 09, 1987
Filed:
Oct. 16, 1984
Applicant:
Inventor:
Katsuhisa Hirokawa, Yokosuka, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
235436 ; 235375 ; 235454 ; 235492 ;
Abstract
A memory card has a card medium and a laser memory for storing data. A data processing section for storing encryption and/or decryption key data, an encryption and/or decryption program and a password is arranged in the card medium. When the same password as prestored in the data processing section is input, the input data is encrypted and/or decrypted in accordance with the encryption and/or decryption key data and the encryption and/or decryption program. The encrypted and/or decrypted data is stored in the laser memory.
Hirokawa, Katsuhisa. (1987). Memory card (U.S. Patent No. 4672182). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4672182
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile