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Expired Canadian patentCanada

Antacid chewing gum

CA 1288343 C · Owner: Calabro, Frank P. · Inventors: Mansukhani, Gul; Calabro, Frank P.; Cherukuri, Subraman Rao

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

of the Invention, According to this invention a medicament containing gum having improved delivery properties is produced by utilizing a chewing gum composition having a moisture content not greater than 0.3% by weight which softens at 40°C to 60°C and has an equilibrium relative humidity lower than the ambient relative humidity as produced and combined with a powdered, insoluble medicament which has been co-spray dried with sugar. 0049D

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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 September 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 3, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 17, 1987
GrantedSeptember 3, 1991
Term endedSeptember 3, 2008
Patent numberCA 1288343 C
Classification (IPC)A61K9/14 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedFeb 17, 1987Patent grantedSep 3, 1991Term endedSep 3, 2008

Sources & verification

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