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Expired Canadian patentCanada

Process for the preparation of prolonged-action immunotoxins containing a glycopeptide constituent which inactivates ribosomes, modified on its polysaccharide units

CA 1264667 C · Owner: Societe Anonyme: Sanofi · Inventors: Jansen, Franz; Gros, Pierre

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Abstract From the Canadian patent

IN THE CANADIAN PATENT & TRADEMARK OFFICE PATENT APPLICATION, entitled: Process for the preparation of prolongedaction immunotoxins containing a glycopeptide constituent which inactivates ribosomes, modified on its polysaccharide units. in the names of: Franz JANSEN Pierre GROS, Assignee: Société anonyme styled: SANOFI ABSTRACT OF THE DISCLOSURE, The invention relates to the preparation of prolonged-action immunotoxins consisting of a conjugate in which an antibody or antibody fragment is coupled by means of a covalent structure containing a disulfide group or a thioether group, with a glycoprotein which inactivates ribosomes and has a prolonged action obtained by the oxidation of its …

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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 January 23, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2007.
  • 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 5, 1985
GrantedJanuary 23, 1990
Term endedJanuary 23, 2007
Patent numberCA 1264667 C
Classification (IPC)A61K47/00 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedDec 5, 1985Patent grantedJan 23, 1990Term endedJan 23, 2007

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