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Expired Canadian patentCanada

Process for preparing compositions containing unsaturated lactones, products produced thereby and organoleptic uses of said products

CA 1338311 C · Owner: Miller, Kevin P. · Inventors: Hagedorn, Myrna Lee; Morris, James A.; Miller, Kevin P.

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Abstract From the Canadian patent

Described is a process for the preparation of compositions of matter containing unsaturated lactones defined according to the generic structure:, wherein R represents C6 alkyl or alkenyl; and X represents C2 C4 or, C6 alkylene or alkenylene; with th eprovisos that R is C6 alkyl when X is alkenylene and R is C6 alkenyl when X is alkylene by means of the sequential steps of (i) fermentation of castor oil or ricinoleic acid using a micro-organism selected from the group consisting of: Candida petrophilum, ATCC 20226;, Candida oleophila ATCC 20177;, Candida sp. ATCC 20504; and Candida sake, ATCC 28137, whereby gamma hydroxydecanoic acid and a mixture of other acids defined according to the …

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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 May 7, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 13, 1989
GrantedMay 7, 1996
Term endedMay 7, 2013
Patent numberCA 1338311 C
Classification (IPC)C12P17/02 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedJuly 13, 1989Patent grantedMay 7, 1996Term endedMay 7, 2013

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