Composition and method for promoting hair growth
CA 2534645 C · Owner: Ueno, Ryuji · Inventors: Habe, Tsuyoshi; Ueno, Ryuji; Sekida, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method and composition for promoting hair growth in a mammal which comprises a prostaglandin compound of formula (I) (see formula I), wherein L, M and D are hydrogen hydroxy, halogen, lower alkyl, hydroxy(lower)alkyl lower alkanoyloxy or oxo, wherein at least one of L and M is a group other than hydrogen, and the five-membered ring may have at least one double bond;, A is -CH3, or -CH2OH, -COCH2OH -COOH or a functional , derivative thereof; B is -CH2-CH2-, -CH=CH- or -C.ident.C-; Z1 and Z2 are oxygen, -NH- or sulfur, R2 and R3 are optionally substituted lower alkyl which is optionally linked together to form lower alkylene R1 is a saturated or …
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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
- Filed August 12, 2004 and granted May 7, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 12, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2026.
- 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.