Process for preparing melanogenic inhibitor, and pigmentation-lightening agent containing the same
CA 2003261 A1 · Owner: Kurimoto, Masashi · Inventors: Mishima, Yutaka; Oyama, Yasuaki; Kurimoto, Masashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a process for preparing a melanogenic inhibitor which is obtained by proliferating an established cell line from a warmblooded animal in vitro, or by proliferating the cell line under the supply of a nutrient body fluid from a non-human warm-blooded animal, disrupting the proliferated cells and extracting a lipid component containing fatty acids and their derivatives. The invention also relates to a pigmentation-lightening agent comprising the lipid component containing the fatty acid and their derivatives extracted from the established cell line from a warm-blooded animal. - 20 -
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 17, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 17, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 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.
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.