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Expired Canadian patentCanada

Peptides having gonadoliberin activity and process for their manufacture

CA 1099703 A · Owner: Hoechst Aktiengesellschaft · Inventors: Geiger, Rolf; Sandow, Jurgen; Konig, Wolfgang

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the disclosure: A peptide with LH-RH-activity being a LH-RH-peptide wherein Gly in 6-position is replaced by D-glutaminic-acid which may be N-substituted at the CO-NH2 moiety wherein, in 10-position Gly-NH2 may be replaced by a NH-alkyl or NHcycloalkyl group and/or wherein the amino acids in 4- 5-, 7- and/or 8-position may be replaced by other amino acids and a process for its manufacture.

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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 April 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 21, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 21, 1977
GrantedApril 21, 1981
Term endedApril 21, 1998
Patent numberCA 1099703 A
Classification (IPC)C07K7/23 +1 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedApril 21, 1977Patent grantedApril 21, 1981Term endedApril 21, 1998

Sources & verification

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