Telecommunications – Transmitter and receiver at separate stations – Near field
Reexamination Certificate
2004-07-12
2008-12-23
Nguyen, Duc M (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Near field
C455S041200, C340S571000, C340S572100, C340S572200
Reexamination Certificate
active
07469126
ABSTRACT:
An RFID transponder is disclosed in which predetermined conductive portions will be removed from the transponder should the transponder be removed from a first object to which it is attached. The transponder has a first response to applied RF before the predetermined portions are removed and a second response after such removal. An RF detector can be used to scan objects with transponders to detect the first or the second response and thereby determine when a transponder has been moved.
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patent: WO 01/71848 (2001-09-01), None
patent: WO 02/077939 (2002-10-01), None
Hanhikorpi Marko
Miettinen Jarkko
Fitch Even Tabin & Flannery
Nguyen Duc M
UPM Raflatac Oy
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