Patents by Inventor Irmgard Hoffmann

Irmgard Hoffmann 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).

  • Patent number: 4305952
    Abstract: 8-Aryl-5,6,7,8-tetrahydropyrazolo(3,4-b)(1,4)diazepine-1H,4H-5,7-diones of the formula ##STR1## in which R.sub.1 through R.sub.5 are as defined in the specification, and medicaments containing these having an anxiolytic action.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: December 15, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Rackur, Irmgard Hoffmann
  • Patent number: 4302468
    Abstract: Compound of the general formula ##STR1## in which R.sub.1 and R.sub.2 are identical or different and represent hydrogen atoms or alkyl groups with 1-6 C atoms, it also being possible for one of the radicals R.sub.1 and R.sub.2 to be, in each case, a benzyl, trifluoromethyl or phenyl group, R.sub.3 denotes a hydrogen atom, an alkyl group which has 1-6 C atoms and is optionally substituted by an aryl group, an alkoxy group with 1-6 C atoms, a trifluoromethyl group, a dialkylamino group with 2-12 C atoms or a cycloalkyl group with 3-6 C atoms, an alkenyl or alkynyl group with 2-6 C atoms, a cycloalkyl group with 3-6 C atoms or a carbalkoxy group with 2-6 C atoms, R.sub.4 is a hydrogen atom and R.sub.5 can be a phenyl group, a phenyl group which is monosubstituted or disubstituted by methyl Cl, Br, F, nitro, cyano and or trifluoromethyl or a pyridyl group and medicaments containing same.
    Type: Grant
    Filed: August 12, 1980
    Date of Patent: November 24, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Rackur, Irmgard Hoffmann
  • Patent number: 4189478
    Abstract: What is disclosed are medicinal compositions, useful as anti-depressive agents, containing a compound of the formula; ##STR1## in which R.sub.1, R.sub.3 and R.sub.4, which may be identical or different, and represent hydrogen atoms or lower alkyl or aralkyl groups, and R.sub.2 and R.sub.2 ', which may be identical or different, represent hydrogen or halogen atoms, hydroxy or trifluoromethyl groups or lower alkyl, alkoxy or aralkoxy groups, it also being possible that two adjacent radicals form an alkylene-dioxy radical, and R.sub.5 represents a hydrogen or halogen atom, a hydroxy, trifluoromethyl or nitro group or a lower alkyl, alkoxy or aralkoxy radical, and their salts with acids (active substance A) together with 7-chloro-1-methyl-5-phenyl-1H-1,5-benzodiazepine-2,4 (3H,5H)-dione (active substance B), and their use as antidepressive agent.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: February 19, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Karl Schmitt, Irmgard Hoffmann, Werner Fulberth, Willi Stammberger
  • Patent number: 4185105
    Abstract: 4-Phenyl-8-amino-tetrahydroisoquinolines of the formula ##STR1## in which R.sub.1 stands for bromine and R.sub.2 stands for hydrogen or both R.sub.1 and R.sub.2 represent chlorine, and their salts with physiologically tolerated acids, pharmaceutical preparations prepared therefrom, process for the manufacture of these preparations and their use for the treatment of depressive conditions.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: January 22, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Karl Schmitt, Irmgard Hoffmann, Ulrich Schacht