Ointments containing tricyclic compound
CA 2050623 C · Owner: Asakura, Sotoo · Inventors: Asakura, Sotoo; Nakate, Toshiomi; Murakami, Yoshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ointment comprising a tricyclic compound such as FK 506 substance which is 17-allyl-1,14-dihydroxy-12-2-(4hydroxy-3-methoxycyclohexyl)-1-methylvinyl-23,25-dimethoxy-13,19,21,27-tetramethyl-11,28-dioxa-4-azatricyclo- 22.3.1.0 4,9)octavos-18-ene-2,3,10,16-tetraone or the like, a solubilizing and/or absorption-promoting agent and an ointment base, which is useful for treating and preventing various skin diseases.
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 September 4, 1991 and granted February 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 4, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2013.
- 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.