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Expired Canadian patentCanada

Amino acids and peptides having a modified tyrosine residue, their preparation and their application as medicaments

CA 1331499 C · Owner: Institut National De La Sante Et De La Recherche Medicale (Inserm) · Inventors: Marseigne, Isabelle; Charpentier, Bruno; Roques, Bernard Pierre

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Abstract From the Canadian patent

Amino acids and peptides having a modified tyrosine residue, their preparation and their application as medicaments.", in the name of: INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE (INSERM), An invention of : Bernard Pierre ROQUES Isabelle MARSEIGNE, Bruno CHARPENTIER, ABSTRACT OF DISCLOSURE These compounds are represented by formula (I) in which R1 to R2 = H, C1=C8 alkyl, C3-C1 cycloalkyl or, aromatic; (when R1 = H, R2 can be amine function-protecting radical, amino acid residue or peptide fragment; R1 and R2 being capable of forming, with N a 5-7 component, ring); A = carbonyl or methylene; W = hydroxy phenoxy, C1-C8 alkoxy, phenoxy(C1-C8 alkyl) amino, (C1-C8 alkyl)-, amino, …

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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 August 16, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 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.
FiledJuly 21, 1989
GrantedAugust 16, 1994
Term endedAugust 16, 2011
Patent numberCA 1331499 C
Classification (IPC)C07K14/59 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedJuly 21, 1989Patent grantedAug 16, 1994Term endedAug 16, 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.