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Expired Canadian patentCanada

Do-it yourself removable/reusable non-chemical highlights & hair extensions

CA 2551834 C · Owner: Aderans Co. Ltd. · Inventors: Sthair, Okyo

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

A hair extension comprises natural or synthetic hair strands being arranged in a parallel arrangement so that the hair strands are aligned at a first attached end and a second attached end. A polyurethane base support of which the middle section the first attached end of the hair strands are secured to a left. Right securing wings are extended from the polyurethane base support. A rectangular shaped clear double sided self adhesive tape with a removable baking is attached to the polyurethane support which has been ventilated with the natural or synthetic supplemental hair as well as to the left and right securing wings.

Read the whole patent

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 July 11, 2006 and granted January 21, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 11, 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.
FiledJuly 11, 2006
GrantedJanuary 21, 2014
Term endedJuly 11, 2026
Patent numberCA 2551834 C
Classification (IPC)A41G5/00

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJuly 11, 2006Patent grantedJan 21, 2014Term endedJuly 11, 2026

Sources & verification

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