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. 14, 1994
Filed:
Jan. 25, 1993
Applicant:
Inventor:
Kenichi Takahira, Itami, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
235380 ; 235439 ; 235492 ;
Abstract
A non-contact IC card has a high mechanical strength with respect to bending and twisting, although thin, yet allows the mounting area of a circuit board to be effectively used. A highly rigid, electrically-conducting reinforcing frame is disposed on the outer edge of a circuit board to increase the mechanical strength of the card with respect to bending and twisting. Further, the reinforcing frame is electrically connected to conductor patterns of a spiral coil on the circuit board having an inductance L in an antenna circuit.