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Expired Canadian patentCanada

Method of targeting tumors in humans

CA 1267840 C · Owner: Vestar, Inc. · Inventors: Presant, Cary Arnet; Proffitt, Richard Thomas

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

A method is provided for delivering micellular particles containing a radiolabelled marker to tumors within humans . The micellular particles are less than approximately 2000.ANG. and incorporate essentially chemically pure phospholoipid molecules in their external surface. Human patients given intravenous injections of such radiolabelled micellular particles showed tumors imaged by such method, without developing symptoms related to the micellular particles.

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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 April 17, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 21, 1985
GrantedApril 17, 1990
Term endedApril 17, 2007
Patent numberCA 1267840 C
Classification (IPC)A61K9/50 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedOct 21, 1985Patent grantedApril 17, 1990Term endedApril 17, 2007

Sources & verification

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