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Expired Canadian patentCanada

An automated method and device for shaping an orthodontic archwire

CA 2853591 C · Owner: 3M Innovative Properties Company · Inventors: Weise, Thomas; Rubbert, Ruedger

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Methods and an apparatus for bending orthodontic wires are provided. An apparatus for bending an orthodontic wire can determine an optimal shape of a portion of an archwire to include a pair of nominal bends apply an actual , bend , to the archwire at a location coinciding with the location of one of the pair of , nominal bends, measure the actual bend applied compare the actual bend to the , nominal bend to determine an amount of deviation from that desired determine , corrective movements to substantially eliminate the deviation iteratively re-, execute such steps until the deviation is within a predefined tolerance and , recalculate a value of the other of the pair of nominal bends to …

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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 November 15, 2005 and granted January 31, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 15, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 15, 2005
GrantedJanuary 31, 2017
Term endedNovember 15, 2025
Patent numberCA 2853591 C
Classification (IPC)A61C7/02 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedNov 15, 2005Patent grantedJan 31, 2017Term endedNov 15, 2025

Sources & verification

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