Artificial hair for implantation and process for producing the same
CA 2194297 C · Owner: Yamada, Shiro · Inventors: Yamada, Shiro; Ikada, Yoshito
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An artificial hair having a physiologically active surface which is formed by a such manner that protein (collagen) molecules are bonded chemically to the graft-polymerized chains introduced onto the surface of the artificial hair. When the artificial hair is implanted into a human body skin, the collagen layer 11 fixed to the surface of the artificial hair having a root part 12 is integrally assimilated and bonded to collagens in the epidermis 4 the corium layer 5, the subcutaneous tissue 6 and the galea 7 whereby the artificial hair can be firmly fixed. Thus this, artificial hair exhibits a low infection rate a high success rate, and is not accompanied by down-growth.
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 June 4, 1996 and granted May 23, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2018.
- 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.