Seamless hair extension system and method of use
CA 2486509 C · Owner: Unihair Co. Ltd. · Inventors: Sthair, Okyo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention consists of a seamless self-adhesive hair extension and a method of attaching it to a head of a wearer. The seamless self-adhesive hair extension is comprised of a plurality of either natural or synthetic hair strands attached to a base support made of polyurethane which has a rectangular strip of double-sided self-adhesive tape with a removable backing as a fastener. The method consists of separating a user's hair along a part line into an upper portion and a lower portion, wherein the upper portion and lower portion are temporarily swept up and away from the part line. Another double-sided rectangular strip of self-adhesive tape is placed along a lower …
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 November 1, 2004 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 1, 2024.
- 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.