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Expired Canadian patentCanada

Liposomal local anesthetic and amalgesic produits

CA 1339813 C · Owner: Mezei Associates Limited · Inventors: Gesztes, Adrienn; Mezei, Michael

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Liposome encapsulated local anesthetic or analgesic agents when applied to skin or mucous membranes provided greater local anesthesia and analgesia than the same agents incorporated in conventional vehicles i.e. ointment, cream or lotion.

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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 14, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 4, 1989
GrantedApril 14, 1998
Term endedApril 14, 2015
Patent numberCA 1339813 C
Classification (IPC)A61K9/12

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedAug 4, 1989Patent grantedApril 14, 1998Term endedApril 14, 2015

Sources & verification

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