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Expired Canadian patentCanada

2-hydroxypropylamine aryl ester derivatives

CA 1201438 A · Owner: American Hospital Supply Corporation · Inventors: Kam, Sheung T.; Matier, William L.

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Abstract From the Canadian patent

Novel compounds of the general formula wherein Ar represents a substituted or unsubstituted aromatic or heterocyclic group; W represents alkylene of from 1 to about 10 carbon atoms; and B represents -NR2COR1, -NR2CONR1R3 -NR2SO2R1,-NR2SO2NR1R3, or -NR2COOR1 wherein R1 R2 and R3 may be the same or different and may be hydrogen, alkyl, alkoxyalkyl, cycloalkyl alkenyl, alkynyl, aryl, heteroaryl, or aralkyl except that R1 is not hydrogen when B is -NR2SO2R1 or -NR2COOR1, or R1 and R3 may together with N form a 5 to 7 membered heterocyclic group; and the pharmaceutically acceptable salts thereof. These compounds exhibit .beta.-adrenergic blocking activity and are also useful in the treatment of …

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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

  • Granted March 4, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 4, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 10, 1982
GrantedMarch 4, 1986
Term endedMarch 4, 2003
Patent numberCA 1201438 A
Classification (IPC)C07D295/20 +2 more

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedNov 10, 1982Patent grantedMarch 4, 1986Term endedMarch 4, 2003

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.