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Expired Canadian patentCanada

Fusion proteins with a eukaryotic ballast portion

CA 1339894 C · Owner: Hoechst Aktiengesellschaft · Inventors: Habermann, Paul

CIPO record

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Abstract From the Canadian patent

A suitable "ballast portion" for fusion proteins is part of the amino acid sequence of interleukin-2 (IL-2) which contains significantly fewer than 100 amino acids. It is advantageous to start from a synthetic IL-2 gene which is divided by unique cleavage sites into six segments up, to three of which can be linked in arbitrary sequence by the modular principle. The invention permits specific constructions with which the solubility of the fusion protein can be altered.

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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 June 2, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2015.
  • 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 19, 1986
GrantedJune 2, 1998
Term endedJune 2, 2015
Patent numberCA 1339894 C
Classification (IPC)C12N15/62 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005200820112014Application filedDec 19, 1986Patent grantedJune 2, 1998Term endedJune 2, 2015

Sources & verification

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