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Expired Canadian patentCanada

Method of fabricating bamboo slats for venetian blinds

CA 2260552 C · Owner: Chen, Feng-Yuan · Inventors: Chen, Feng-Yuan

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 method of fabricating bamboo slats for bamboo blinds comprises the steps of : i) selecting bamboo wood from a bamboo cane and cutting the, selected bamboo wood into bamboo strips subject to a desired length and a desired width ; ii) removing the skin and joints from both sides of the bamboo strips, and boiling the bamboo strips in a hydrogen peroxide solution : iii) splicing the bamboo strips into bamboo slats of a desired thickness ; iv) coating, the bamboo strips with a bonding glue and using a pneumatic press to bond, said bamboo strips ; v) splicing the bamboo plates into bamboo slats of a predetermined thickness, and air pressing the bamboo slats and grinding the, bamboo slats by …

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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 28, 1999 and granted January 15, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2021.
  • 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 28, 1999
GrantedJanuary 15, 2002
Term endedJanuary 28, 2019
Patent numberCA 2260552 C
Classification (IPC)B27M3/08 +2 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedJan 28, 1999Patent grantedJan 15, 2002Term endedJan 28, 2019

Sources & verification

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