Patents by Inventor Alfred Rhomberg

Alfred Rhomberg 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).

  • Compositions using cycloalkano-quinolone derivatives and their method of use
    Patent number: 4049811
    Abstract: Cycloalkano-quinolone derivatives having anti-microbial activity characterized by the formula: ##STR1## wherein one of R.sub.1 and R.sub.2 designates hydrogen, halogen, nitro, amino, hydroxyl, acylamino, acyloxy, alkoxy or aryloxy and the other taken together with R.sub.3 forms an alkylene bridge containing 2 to 6 carbon atoms, X is hydrogen, lower alkyl, which may be substituted by a member of the group consisting of halogen, hydroxyl, acyloxy, alkoxy, aryloxy, aralkyloxy, mercapto, alkylmercapto, arylmercapto, arylsulfonyl, and alkylsulfonyl, or X is unsubstituted alkenyl including alkadienyl, or alkynyl and Y is hydroxyl, amino or lower alkoxy, and the pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: September 20, 1977
    Assignee: Boehringer Mannheim G.m.b.H.
    Inventors: Herbert Berger, Alfred Rhomberg, Kurt Stach, Wolfgang Vomel, Winfriede Sauer
  • Cyclopenteno[1,2-h]quinol-4-one derivatives
    Patent number: 4033967
    Abstract: New cyclopenteno-quinolone derivatives of the formula ##STR1## wherein R is a saturated or unsaturated aliphatic hydrocarbyl, e.g., alkyl and alkenyl,X is hydrogen or alkyl, andY is halogen, azido, alkylthio, alkyl-sulfonyl, or nitrile or unsubstituted or substituted (e.g., alkyl mono or di-substituted) amino;And the pharmacologically compatible salts thereof; are outstandingly effective as bacteriostats in mammals.
    Type: Grant
    Filed: October 17, 1974
    Date of Patent: July 5, 1977
    Assignee: Boehringer Mannheim G.m.b.H.
    Inventors: Alfred Rhomberg, Herbert Berger, Kurt Stach, deceased, Werner Plattner, administrator, Wolfgang Vomel, Winfriede Sauer
  • Nitrogen containing derivatives of cyclopenteno-quinolone compounds and bacteriostatic compositions
    Patent number: 4034096
    Abstract: New cyclopenteno-quinolone derivatives of the formula ##STR1## wherein R is a saturated or unsaturated aliphatic hydrocarbyl, e.g., alkyl and alkenyl,X is hydrogen or alkyl, andY is halogen, azido, alkylthio, alkyl-sulfonyl, or nitrile or unsubstituted or substituted (e.g., alkyl mono or di-substituted) amino;And the pharmacologically compatible salts thereof; are outstandingly effective as bacteriostats in mammals.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: July 5, 1977
    Assignee: Boehringer Mannheim G.m.b.H.
    Inventors: Alfred Rhomberg, Herbert Berger, Kurt Stach, deceased, by Werner Plattner, administrator, Wolfgang Vomel, Winfriede Sauer
  • Cyclopenteno-3-carboxyl-4-quinolone derivatives and their bacteriostatic compositions
    Patent number: 3995040
    Abstract: New cyclopenteno-quinolone derivatives of the formula ##SPC1##WhereinR is a saturated or unsaturated aliphatic hydrocarbyl, e.g., alkyl and alkenyl,X is hydrogen or alkyl, andY is halogen, azido, alkylthio, alkyl-sulfonyl, or nitrile or unsubstituted or substituted (e.g., alkyl mono or di-substituted) amino;And the pharmacologically compatible salts thereof; are outstandingly effective as bacteriostats in mammals.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: November 30, 1976
    Assignee: Boehringer Mannheim G.m.b.H.
    Inventors: Alfred Rhomberg, Herbert Berger, Kurt Stach, Wolfgang Vomel, Winfriede Sauer
  • Cyclopentenoquinolone compounds for treating bacterial infections
    Patent number: 3988460
    Abstract: Certain novel cyclopentenoquinolone derivatives of the formula: ##SPC1##WhereinR and X, which may be the same or different, are hydrogen or lower saturated or unsaturated aliphatic hydrocarbyl;Y is hydroxyl or lower alkoxy or lower acyloxy (i.e., alkanoyloxy); andZ is hydrogen or lower alkoxy, or, together with Y, represents an oxo or lower alkenyldioxy radical; and the pharmacologically compatibile salts thereofAre outstandingly effective as anti-microbials, particularly for applications against infections of the urinary tract.
    Type: Grant
    Filed: March 13, 1975
    Date of Patent: October 26, 1976
    Assignee: Boehringer Mannheim G.m.b.H.
    Inventors: Alfred Rhomberg, Herbert Berger, Kurt Stach, deceased, by Werner Plattner, executor, Wolfgang Vomel, Winfriede Sauer
  • Ortho fused cycloalkano-4-quinolone-3-carboxylic acid derivatives
    Patent number: 3966743
    Abstract: Cycloalkano-quinolone derivatives having anti-microbial activity characterized by the formula: ##SPC1##Wherein one of R.sub.1 and R.sub.2 designates hydrogen, halogen, nitro, amino, hydroxyl, acylamino, acyloxy, alkoxy or aryloxy and the other taken together with R.sub.3 forms an akylene bridge containing 2 to 6 carbon atoms, X is hydrogen, lower alkyl, which may be substituted by a member of the group consisting of halogen, hydroxyl, acyloxy, alkoxy, aryloxy, aralkyloxy, mercapto, alkylmercapto, arylmercapto, arylsulfonyl, and alkylsulfonyl, or X is unsubstituted alkenyl including alkadienyl, or alkynyl and Y is hydroxyl, amino or lower alkoxy, and the pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: June 29, 1976
    Assignee: Boehringer Mannheim G.m.b.H.
    Inventors: Herbert Berger, Alfred Rhomberg, Kurt Stach, Wolfgang Vomel, Winfriede Sauer