Whitening cosmetic composition
CA 1255604 A · Owner: Sansho Seiyaku Co. Ltd. · Inventors: Higa, Yoshitaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Placenta extracts and kojic acid or kojic acid derivatives are formulated into cosmetic bases to make cosmetic compositions. The whitening cosmetic compositions exhibit an enhanced whitening effect for the skin by synergestic effects of the placenta extract and kojic acid or kojic acid derivatives. - 15 -
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
- Granted June 13, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 13, 2006.
- 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.