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Expired Canadian patentCanada

A back support adjustment system

CA 2644463 C · Owner: Rajaratnam, Kumar · Inventors: Rajaratnam, Kumar

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

A back support adjustment system including a flexible suspension system having an adjustable and interchangeable flexing means positioned in between a frame and a , support member. The back support adjustment system further includes an adjustable , back support system having a housing integral with a back support surface and a tension , assembly movable within the housing. Both the tension assembly and the adjustable back , support system are adapted to engage the frame so that the movable tension assembly , adjusts the tension of the adjustable back support system and the adjustable flexing , means controls movement of the flexible suspension system.

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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 March 27, 2006 and granted October 28, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2026.
  • 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.
FiledMarch 27, 2006
GrantedOctober 28, 2014
Term endedMarch 27, 2026
Patent numberCA 2644463 C
Classification (IPC)A47C7/36 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedMarch 27, 2006Patent grantedOct 28, 2014Term endedMarch 27, 2026

Sources & verification

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