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Expired Canadian patentCanada

Adamantane derivatives, compositions of matter containing same, processes for preparing said adamantane derivatives and said compositions, and organoleptic and deodorancy uses of said adamantane derivatives and said compositions

CA 2000758 C · Owner: Branco, Anthony G. · Inventors: Branco, Anthony G.; Fujioka, Futoshi; Narula, Anubhav

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Abstract From the Canadian patent

2-, Described are adamantane derivatives which have the structure:, substituted at least at the "2" "4" and "8" positions, thusly:, (a) at the "2" position with an oxygen atom; (b) at the "4" position with a carbon atom; and (c) at the "8" position with a methyl group and uses thereof in augmenting or enhancing the aroma or taste of consumable materials including but not limited to perfume compositions, colognes and perfumed articles; with such adamantane derivatives being exemplified by the compounds having the structure:, and the structure: -3-, wherein Y is a moiety selected from the group consisting of the structures:, -4-, wherein W is no moiety or is selected from the group consisting …

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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

  • Filed October 16, 1989 and granted July 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 16, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 16, 1989
GrantedJuly 2, 2002
Term endedOctober 16, 2009
Patent numberCA 2000758 C
Classification (IPC)C07C35/37 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedOct 16, 1989Patent grantedJuly 2, 2002Term endedOct 16, 2009

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