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Expired Canadian patentCanada

Process for production of insulin-like growth factor i and plasmid for production thereof

CA 1297814 C · Owner: Saitoh, Yoshimasa · Inventors: Satoh, Susumu; Kusunoki, Chihiro; Ueda, Ikuo

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Abstract From the Canadian patent

Preparation of IGF-I fused with a protective peptide. This is carried out by culturing a microorganism transformed with an expression plasmid which has a gene coding IGF-I fused with a protective peptide and from which a rop gene is cut off, and recovering IGF-I fused with a protective peptide from the culture broth. There is also described a product which is an expression plasmid which has a gene coding IGF-I fused with a protective peptide and from which a rop gene is cut off. This product is a human insulin-like growth factor.

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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 March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 21, 1986
GrantedMarch 24, 1992
Term endedMarch 24, 2009
Patent numberCA 1297814 C
Classification (IPC)C12N15/17 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedOct 21, 1986Patent grantedMarch 24, 1992Term endedMarch 24, 2009

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