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Expired Canadian patentCanada

Intelligent station using multiple rf antennae and inventory control system and method incorporating same

CA 2473136 C · Owner: Taylor, Mark Albert · Inventors: Campero, Richard John; Metzler, Steven Paul; Taylor, Mark Albert

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An inventory control system and method (fig. 3A) that tracks inventories of items with RFID tags (501 & 502), includes a reader unit (120) and an intelligent station (124) that tracks RFID tags to determine item information of items to be inventoried. The reader unit transmits and receives RF signals. The intelligent station transmission cable (221 & 222) through a first switch and one or more additional RF cable through additional switches (527). An inventory control processing unit (550) receives item information from the intelligent stations to update inventory information regarding the items to be inventoried.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed January 9, 2003 and granted April 16, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 9, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 9, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 9, 2003
GrantedApril 16, 2013
Term endedJanuary 9, 2023
Patent numberCA 2473136 C
Classification (IPC)H01Q11/12 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedJan 9, 2003Patent grantedApril 16, 2013Term endedJan 9, 2023

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.