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Expired Canadian patentCanada

Use of gyrase inhibitors for decontamination of mycoplasma-infectedcell culture

CA 1288712 C · Owner: Bayer Aktiengesellschaft · Inventors: Zeiler, Hans-Joachim; Brunner, Helmut; Hubner, Gunter E.

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Abstract From the Canadian patent

Use of gyrase inhibitors for decontamination of mycoptplasma-infected cell cultures, ABSTRACT OF DISCLOSURE A method for decontaminating cell cultures comprising contacting cell cultures with quinolone- and 1 8-naphthyridonecarhoxylic acids of the formula (I) in which, R1 represents methyl, ethyl, propyl isopropyl,cyclo-, propyl, vinyl, 2-hydroxyethyl,2-fluorethyl methoxy, amino, methylamino, dimethylamino ethylamino, phenyl, 4-fluorophenyl or 2,4-difluorophenyl R2 represents hydrogen, alkyl having 1 to 4 carbon atoms, or (5-methyl-2-oxo-1,3-dioxol-4-yl)-methyl R3 represents methyl or a cyclic amino group such as , in which, R4 represents hydrogen, alkyl having 1 to 4 carbon atoms, …

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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 September 10, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 10, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 5, 1986
GrantedSeptember 10, 1991
Term endedSeptember 10, 2008
Patent numberCA 1288712 C
Classification (IPC)C12N5/02 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 5, 1986Patent grantedSep 10, 1991Term endedSep 10, 2008

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