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Expired Canadian patentCanada

Synthesis of equimolar multiple oligomer mixtures, especially of oligopeptide mixtures

CA 2090860 C · Owner: Pinilla, Clemencia · Inventors: Pinilla, Clemencia; Cuervo, Julio H.; Houghten, Richard A.

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Abstract From the Canadian patent

A process for the synthesis of a complex mixture pool of solid support-coupled monomeric repeating unit compounds such as amino acid derivatives is disclosed in which the mixture pool contains an equimolar representation of reacted monomeric repeating unit compounds coupled. Also disclosed is a process for the stepwise synthesis of a complex mixture of coupled or free unsupported oligomers such as oligopeptides. A set of self-solubilizing unsupported mixed oligopeptides having one or more predetermined amino acid residues at one or more of the same predetermined , positions in the oligopeptide chain in which the set contains equimolar amounts of a plurality of different amino acid …

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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 November 20, 1991 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 20, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 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.
FiledNovember 20, 1991
GrantedSeptember 16, 2003
Term endedNovember 20, 2011
Patent numberCA 2090860 C
Classification (IPC)C07K7/08 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedNov 20, 1991Patent grantedSep 16, 2003Term endedNov 20, 2011

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