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Expired Canadian patentCanada

Aroma chemicals

CA 1086776 A · Owner: Bush Boake Allen, Inc. · Inventors: Owsley, Dennis C.; Bloomfield, Jordan 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

Compounds represented by the structural formulae (I), (II), (III), wherein n is an integer 0 or 1; A B and C each independently, represent hydrogen or alkyl having from 1 to 3 carbon atoms provided that when n is 0 at least one of A B or C cannot, be hydrogen; R represents hydrogen or an alkyl having from 1 to 6 carbon atoms; D and E each independently represent hydrogen or alkyl having from 1 to 6 carbon atoms provided, that the sum of the carbon atoms in D and E does not exceed 6, provided that, in the bicyclo compounds at least one of, A, B, C, D or E must be an alkyl; m is an integer 1 through 8; F and G represent hydrogen or alkyl having from 1 to 3 carbon atoms; X represents , wherein …

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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 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 30, 1997.
  • 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 24, 1976
GrantedSeptember 30, 1980
Term endedSeptember 30, 1997
Patent numberCA 1086776 A
Classification (IPC)C07C35/44 +2 more

Timeline

Timeline From CIPO dates

1977198019831986198919921995Application filedDec 24, 1976Patent grantedSep 30, 1980Term endedSep 30, 1997

Sources & verification

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