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Expired Canadian patentCanada

Homocarnosine or acylhomocarnosine salts

CA 1261850 A · Owner: Hamari Chemicals, Ltd. · Inventors: Takaya, Masahiro

CIPO record

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Abstract From the Canadian patent

A homocarnosine or acylhomocarnosine salt of the formula:, wherein R means a hydrogen atom or an acyl group; M means a zinc atom or an aluminum atom; a denotes an interger of 1 to 3; and b denotes an interger of 0 to 21 which can be produced by reacting homocarnosine or acylhomocarnosine with a zinc compound such as zinc chloride or zinc hydroxide etc. or with an aluminum alkoxide. The homocarnosine or acylhomocarnosine salt has excellent antiulcer and wound healing-promoting activities and is very low in toxicity.

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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 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 27, 1985
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1261850 A
Classification (IPC)C07D233/64 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedDec 27, 1985Patent grantedSep 26, 1989Term endedSep 26, 2006

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