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Expired Canadian patentCanada

Method for selectively increasing the ratio of single major components ofantibiotic a 16686 complex

CA 1301689 C · Owner: Lancini, Giancarlo · Inventors: Lancini, Giancarlo; Borghi, Angelo; Antonini, Piero

CIPO record

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Abstract From the Canadian patent

The present invention relates to a method for selectively enhancing the production of factors A2 and/or A3 of antibiotic A/16686 either to isolate these single components or to enrich the complex in one or both the above components, which comprises adding an appropriate precursor of the desired antibiotic factor to an A/16686 producing culture during fermentation.

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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 May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 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.
FiledSeptember 10, 1987
GrantedMay 26, 1992
Term endedMay 26, 2009
Patent numberCA 1301689 C
Classification (IPC)C12P21/02 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 10, 1987Patent grantedMay 26, 1992Term endedMay 26, 2009

Sources & verification

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