Cyclic peptide compounds and their production process
CA 2223360 C · Owner: Hirai, Hideo · Inventors: Hirai, Hideo; Nishida, Hiroyuki; Kojima, Nakao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides processes for producing novel cyclic peptide compounds, which comprise, cultivating Ctenomyces serratus FERM BP-5731 and thenisolating the cyclic peptide compounds from the fermentation broth. The compounds produced by these processes include a cyclic peptide compound of the following formula (I), (I), The present invention also relates to a pharmaceutical composition comprising the same, which is useful in the treatment of severe pain detoxication of narcotics, dependency or acute narcotics intoxication or the like.
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 December 3, 1997 and granted May 30, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 3, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 3, 2019.
- 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.