Pharmaceutical composition for percutaneous drug absorption and percutaneous drug absorption promoter
CA 1309950 C · Owner: Hata, Takehisa · Inventors: Ishikuro, Hiroshi; Ueda, Yoshio; Kado, Kazutake
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is described a pharmaceutical composition for percutaneous drug absorption which comprises 5-isopropyl 3-methyl 2-cyano-6-methyl-4- (3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate and ethanol and/or an unsaturated higher fatty acid. Disclosure is also made of ethanol and/or an unsaturated higher fatty acid as a promoter capable of promoting percutaneous absorption of the dihydropyridine. The process of preparing the composition is also disclosed.
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 November 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 2009.
- 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.