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Expired Canadian patentCanada

Ester of metronidazole with n,n-dimethylglycine and acid addition salt thereof

CA 1188305 A · Owner: A/S Dumex (Dumex Ltd.) · Inventors: Bundgaard, Hans; Thorbek, Pia; Larsen, Claus

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Abstract From the Canadian patent

Novel N,N-dimethylglycine ester of metronidazole of, the formula, acid addition salt thereof and method of preparing such ester or acid addition salt. The novel compounds exhibit favourable solubility in water and are especially useful for the parenteral treatment of certain anaerobic infections.

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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 10, 1983
GrantedJune 4, 1985
Term endedJune 4, 2002
Patent numberCA 1188305 A
Classification (IPC)C07D233/95 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJune 10, 1983Patent 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.