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Expired Canadian patentCanada

Dipeptide sweetener

CA 1189065 A · Owner: Stamicarbon B.V. · Inventors: Schiepers, Lambertus A.C.; Boesten, Wilhelmus H.J.

CIPO record

Overview

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

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Abstract From the Canadian patent

Novel sweetener compounds having the formula: Formula I, wherein M represents hydrogen ammonium, alkali or alkaline earth, R represents R1 represents methyl, ethyl, propyl, R2 represents -OH or OCH3, * signifies an L-optical configuration for this atom.

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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 18, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 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.
FiledSeptember 1, 1981
GrantedJune 18, 1985
Term endedJune 18, 2002
Patent numberCA 1189065 A
Classification (IPC)C07K5/07 +1 more

Timeline

Timeline From CIPO dates

1982198519881991199419972000Application filedSep 1, 1981Patent grantedJune 18, 1985Term endedJune 18, 2002

Sources & verification

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