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Expired Canadian patentCanada

All-cis-1,3,5-triamino-2,4,6-cyclohexanetriol derivatives, their use, processes for their preparation and pharmaceutical preparations containing them

CA 1289963 C · Owner: Schneider, Walter · Inventors: Hegetschweiler, Hans Kaspar; Schneider, Walter; Erni, Isidor

CIPO record

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Abstract From the Canadian patent

all-cis-1,3,5-Triamino-2,4,6-trihydroxycyclohexane derivatives corresponding to the general formula I wherein the symbols R1, R2, R3, R4, R5 and R6 are identical or different and represent hydrogen atoms alkyl, groups or -CO-alkyl groups wherein the alkyl in the alkyl or -CO-alkyl group has 1 to 18 carbon atoms and the alkyl and -CO-alkyl groups may contain, independently of one another one or more identical or different functional groups and at, least one of the groups R1 to R6 is one of the above mentioned unsubstituted or substituted alkyl groups or -CO-alkyl groups, and their salts with pharmacologically conventionally used inorganic or organic acids and their quaternary ammonium salts, …

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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 October 1, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 30, 1986
GrantedOctober 1, 1991
Term endedOctober 1, 2008
Patent numberCA 1289963 C
Classification (IPC)C07C215/44 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJan 30, 1986Patent grantedOct 1, 1991Term endedOct 1, 2008

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