Aromatic amine derivatives having nos inhibiting action
CA 2275933 A1 · Owner: Nishimura, Yoshikazu · Inventors: Makino, Toshihiko; Nishimura, Yoshikazu; Nagafuji, Toshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds represented by general formula (1) which have NOS inhibitory activities and are useful as drugs, for example remedies for cerebrovascular , disorders wherein R1 and R2 represent each hydrogen etc.; R3 and R4 , represent each hydrogen lower alkyl, etc.; R5 represents hydrogen etc.; X1, X2, X3 and X4 represent each hydrogen lower alkoxyl, etc.; A represents an , optionally substituted pyridine ring etc.; and m and n are each 0 or 1.
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 24, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 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.