Esters of aryloxypropanolamine derivatives
CA 1201437 A · Owner: American Hospital Supply Corporation · Inventors: Matier, William L.; Erhardt, Paul W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel compounds of the general formula wherein R1 is lower alkyl, lower cycloalkyl lower alkenyl, lower alkynyl, lower alkyl carboxymethyl aryl carboxy-, methyl, aryl, or aralkyl; A is a direct bond lower, alkylene, or lower alkenylene; x is 1 or 2 provided that, when x is greater than 1 different occurrences of, the , group may be the same or different; Ar is heterocyclic, unsubstituted aromatic or aromatic substituted with lower alkyl, lower alkenyl lower alkynyl, lower alkoxy, halogen, acetamido amino, nitro, lower, alkylamino, hydroxy lower hydroxyalkyl or cyano; W is, alkylene containing from 1 to about 10 carbon atoms; and B is -NR2COR3, -NR2CONR3R4, -NR2SO2R3, -NR2SO2NR3R4 or, …
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
- 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.
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.