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. 25, 2000
Filed:
Dec. 10, 1998
Applicant:
Inventors:
Assignee:
Mitsubishi Materials Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
3405725 ; 343841 ;
Abstract
An anti-theft tag for attachment to a theft-monitored article including a resonance circuit which resonates radio waves of a predetermined frequency transmitted from an antenna, and a shielding coil having at least two terminals. The shielding coil is disposed between the resonance circuit and the article when the anti-theft tag is attached to the article, and the at least two terminals are short-circuited.