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Expired Canadian patentCanada

Compositions for treating glaucoma

CA 1188224 A · Owner: American Hospital Supply Corporation · Inventors: Matier, William L.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure A method for the treatment of glaucoma or lowering intraocular pressure in a mammal, involving topically administering to the eye of such mammal a selectively metabolized beta-blocking compound of the formula wherein R may be lower alkyl, lower alkynyl aryl, or, aralkyl; A may be a direct bond lower alkylenyl, or, lower alkenyl; x may be an integer from 1 to 3; Ar may be substituted or unsubstituted aromatic; R1 may be lower alkyl, lower hydroxy alkyl, lower alkenyl lower, alkynyl, or aralkyl; and pharmaceutically accepted salts thereof. Because of a relatively long duration of action of such compounds in ocular fluids and a relatively short duration of action in …

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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 June 4, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 4, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 14, 1982
GrantedJune 4, 1985
Term endedJune 4, 2002
Patent numberCA 1188224 A
Classification (IPC)A61K31/21 +1 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedJune 14, 1982Patent grantedJune 4, 1985Term endedJune 4, 2002

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