Preparation of substituted alkenoic acids
CA 2206469 A1 · Owner: Eli Lilly And Company · Inventors: Nunes, Joseph John; Nelson, Katrina Ann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a highly selective process for preparation of E-.omega.-phenyl-.omega.-(3-pyridyl)-.omega.-alkenoic acid derivatives bearing a carbamoyl substituted oxazolyl or oxazolinyl group on the phenyl ring which demonstrate utility for thromboxane receptor antagonism and/or thromboxane synthase inhibition, as well as to intermediates therefor.
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 May 28, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 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.