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:
Nov. 22, 1988
Filed:
Sep. 23, 1986
Katsuaki Karasawa, Tokyo, JP;
Hideyuki Shoji, Tokyo, JP;
Tomoo Kasuo, Tokyo, JP;
Kazunori Kita, Tokyo, JP;
Syunichi Matsumoto, Tokyo, JP;
Keisuke Tonomura, Tokyo, JP;
Narutoshi Minami, Tokyo, JP;
Casio Computer Co. LTD., Tokyo, JP;
Abstract
An electronic key apparatus wherein an encrypted code for unlocking an electronic lock is stored in an encrypted code storage register. A password is stored in a password storage register. The same password as that stored in the password storage register, is input via a switch. The password input by the switch is compared with the password stored in the password storage register, by a coincidence detection circuit. When a coincidence is detected, the encrypted code stored in the encrypted code storage register is transmitted to the electronic lock, by a transmitter.