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. 16, 2001
Filed:
Dec. 24, 1998
Tomohiro Mori, Omiya, JP;
Takanori Endo, Omiya, JP;
Kouichi Ishiyama, Omiya, JP;
Tadashi Yonezawa, Omiya, JP;
Masami Miyake, Omiya, JP;
Shigeyuki Osawa, Noda, JP;
Seiro Yahata, Tokyo, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
A burglar detection apparatus has a tag,that includes a resonance circuit. The tag is preferably contained with an object,whose theft is desired to be detected. The tagged object may be placed in a drawer,which is contained in a box,. A tag detection sensor,is installed in the box and detects whether the tag,is present in the drawer,. Also, a drawer sensor,detects whether the drawer is opened. Based on respective detection outputs of the tag detection sensor,and the drawer sensor,, a control circuit,controls an alarm,. Advantageously, the apparatus can be installed in a comparatively small space, does not malfunction even if subjected to large amounts of electrical noise, and reliably detects the presence or absence of a tag even if the tag is located near a metal object.