Novel aliphatic compounds, process for their preparation and their usage
CA 2425923 A1 · Owner: Mori, Kenji · Inventors: Nishikawa, Masazumi; Tamai, Tadakazu; Mori, Kenji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the general formula (I) which are each in the form of a (2R 3S, 2'S) optical isomer when the bond at the 8-position is double or in the form of (2S, 3R, 2'RS) optical isomers when the bond at the 8-position is single or their pharmacologically acceptable salts; a process for preparing the same; and use of the same in treatment of circulatory diseases (such as arteriosclerosis and cardiopathy), cancer rheumatism, diabetic retinopathy, and respiratory diseases. In said formula n is an integer of 1 to 11; and 1 , is an integer of 1 to 16.
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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 October 12, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 12, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 2023.
- 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.