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Expired Canadian patentCanada

Dopamine analog amide

CA 1340475 C · Owner: Protarga, Inc. · Inventors: Shashoua, E. Victor

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

The invention involves the formation of a prodrug from a fatty acid carrier and a neuroactive drug. The prodrug is stable in the environment of both the stomach and the bloodstream and may be delivered by ingestion. The prodrug passes readily through the blood brain barrier. Once in the central nervous system, the prodrug is hydrolyzed into the fatty acid carrier and the drug to release the drug. In a preferred embodiment the carrier is 4, 7, 10, 13, 16, 19 docosahexa-enoic acid and the drug is dopamine. Both are normal components of the central nervous system. The covalent bond between the drug and the carrier preferably is an amide bond which, bond may survive the conditions in the …

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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 March 30, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 29, 1989
GrantedMarch 30, 1999
Term endedMarch 30, 2016
Patent numberCA 1340475 C
Classification (IPC)C07C233/20 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedSep 29, 1989Patent grantedMarch 30, 1999Term endedMarch 30, 2016

Sources & verification

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