Patent ID: 6734795
Filing Date: 2004-05-11
Classification: A61C,G08B

Abstract:
A system for locating a lost denture comprising an RF passive transponder containing an integrated circuit device connected to a coil and a portable reader having a transceiver for emitting an electromagnetic field to generate a voltage in the coil so that a code stored on the integrated circuit device is then transmitted through the coil to the transceiver for initially detecting the presence of a lost denture containing an RF passive transponder in a localized area larger than the area in which the code stored in the integrated circuit device can be read wherein the denture also includes a magnetic member embedded in the denture and a stationary transmitter-detector for detecting the presence of the magnetic member in the lost denture, the range at which the magnetic member can be detected being greater that the range at which the RF passive transponder can be detected.