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Expired Canadian patentCanada

Method and composition for treating renal failure

CA 2177195 C · Owner: Twyman, Diana · Inventors: Chang, Shen-Youn; Tucker, Hugh N.; Trimbo, Susan

CIPO record

Overview

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

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Abstract From the Canadian patent

The present invention provides a composition as well as method for providing nutrition to renal patients. Pursuant to the present invention, the enteral composition includes an effective amount of a protein source including whey protein and free amino acids that provide essential as well as nonessential amino acids. The composition is calorically dense and has a moderate osmolality.

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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

  • Filed May 23, 1996 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 23, 1996
GrantedApril 17, 2012
Term endedMay 23, 2016
Patent numberCA 2177195 C
Classification (IPC)A61K38/17

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedMay 23, 1996Patent grantedApril 17, 2012Term endedMay 23, 2016

Sources & verification

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