Patents by Inventor Karl Drossler

Karl Drossler 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).

  • 3-(mercaptoalkyl)quinazoline
    Patent number: 5306721
    Abstract: A compound or its tautomer of Formula I, ##STR1## wherein R.sup.1 is hydrogen, a 6-methyl, 6-fluoro, 6-chloro, 6-bromo, or 6,7-dimethoxy residue,R.sup.2 is hydrogen, or a methyl residue,and n is 1 or 2,and tautomers and their pharmaceutically acceptable alkali, or ammonium salts.
    Type: Grant
    Filed: August 2, 1993
    Date of Patent: April 26, 1994
    Assignee: Arzneimittelerk Dresden G.m.b.H.
    Inventors: Siegfried Leistner, Michael Gutschow, Karl Drossler, Helmut Vieweg, Gunther Wagner, Thomas Strohscheidt, Dieter Lohmann, Gunter Laban, Herwart Ambrosius, Angela Siegling