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:
Feb. 07, 2006
Filed:
Oct. 02, 2002
Emre Ertin, Lewis Center, OH (US);
Richard M. Pratt, Richland, WA (US);
Michael A. Hughes, Pasco, WA (US);
Kevin L. Priddy, Upper Arlington, OH (US);
Wayne M. Lechelt, West Richland, WA (US);
Emre Ertin, Lewis Center, OH (US);
Richard M. Pratt, Richland, WA (US);
Michael A. Hughes, Pasco, WA (US);
Kevin L. Priddy, Upper Arlington, OH (US);
Wayne M. Lechelt, West Richland, WA (US);
Battelle Memorial Institute, Richland, WA (US);
Abstract
An RF tag system, comprising an RF reader configured to issue a plurality of different RF commands and to provide a continuous RF illumination field, and a plurality of RF tags respectively including a permanent identification; wherein the plurality of RF tags are configured to respond to a certain RF command from the RF reader by transmitting their respective identifications by way of backscatter modulation of the RF illumination field, and wherein the RF tags are further configured to perform the responding by way of respective independently selected random radio frequencies and timeslots from respective pre-defined ranges of radio frequencies and timeslots.