Expired Canadian patentCanada
Hair revitalizing tonic composition
CA 1329367 C · Owner: Uchikawa, Kei-Ich · Inventors: Nakanishi, Jotaro; Miyazawa, Kiyoshi; Ishino, Akihiro
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hair revitalizing tonic composition having excellent hair depilation prevention and hair revitalizing effects, comprising (1) an amine oxide or (2) an amine oxide and an anionic surfactant formulated therein.
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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
- Granted May 10, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 10, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 30, 1988
GrantedMay 10, 1994
Term endedMay 10, 2011
Patent numberCA 1329367 C
Classification (IPC)A61K8/40 +2 more
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.