Patents by Inventor Gunter E. Hubner

Gunter E. Hubner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for decontamination of mycoplasma-infected cell cultures
    Patent number: 4895803
    Abstract: A method for decontaminating cell cultures comprising contacting cell cultures with quinolone- and 1,8-naphthyridonecarboxylic acids of the formula (I) ##STR1## in which R.sup.1 represents methyl, ethyl, propyl, isopropyl, cyclopropyl, vinyl, 2-hydroxyethyl, 2-fluorethyl, methoxy, amino, methylamino, dimethylamino, ethylamino, phenyl, 4-fluorophenyl or 2,4-difluorophenyl,R.sup.2 represents hydrogen, alkyl having 1 to 4 carbon atoms, or (5-methyl-2-oxo-1,3-dioxol-4-yl)-methyl,R.sup.3 represents methyl or a cyclic amino group such as ##STR2## in which R.sup.4 represents hydrogen, alkyl having 1 to 4 carbon atoms, 2-hydroxyethyl, allyl, propargyl, 2-oxopropyl, 3-oxobutyl, phenacyl, formyl, CFCl.sub.2 --S--, CFCl.sub.2 --SO.sub.2 --, CH.sub.3 O--CO--S--, benzyl, 4-aminobenzyl or ##STR3## R.sup.5 represents hydrogen or methyl, R.sup.6 represents hydrogen, alkyl having 1 to 4 carbon atoms, phenyl or benzyloxomethyl,R.sup.
    Type: Grant
    Filed: October 22, 1986
    Date of Patent: January 23, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunter E. Hubner, Helmut Brunner, Hans-Joachim Zeiler