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Expired Canadian patentCanada

L-aminodicarboxylic acid aminoalkenoic acid ester amides

CA 1262011 A · Owner: General Foods Corporation · Inventors: Barnett, Ronald E.; Roy, Glenn M.; Zanno, Paul R.

CIPO record

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Abstract From the Canadian patent

This invention relates to novel sweeteners of the formula:, wherein, A is hydroxyalkyl containing 1-3 carbon atoms A1 is hydrogen or alkyl containing 1-3 carbon atoms;, y is -(CHR2)n-R1 or -CHR3R4;, R1 is cycloalkyl cycloalkenyl, bicycloalkyl, or bicycloalkenyl containing up to 7 ring carbon atoms and up to a total of 12 carbon atoms;, R2 is H or alkyl containg 1-4 carbon atoms; R3 and R4 are each cycloalkyl containing 3-4 ring carbon atoms;, n = 0 or 1; and, m = 0 or 1 and food-acceptable salts thereof.

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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.
FiledApril 23, 1986
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1262011 A
Classification (IPC)C07K5/00 +1 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedApril 23, 1986Patent 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.