Patents by Inventor Armin Stoessel

Armin Stoessel 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: 5041682
    Abstract: Reaction mixtures which contain cyclohexanol, cyclohexanone and cyclohexyl hydroperoxide and are obtained in the oxidation of cyclohexane with molecular oxygen, or with a gas containing this, in the liquid phase are worked up by a process in which the reaction mixture is hydrogenated in the presence of a noble metal catalyst at elevated temperatures and under superatmospheric pressure, the resulting mixture is treated with an aqueous alkali metal carbonate solution, and cyclohexanol and cyclohexanone are separated off by distillation.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: August 20, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Hartig, Armin Stoessel, Ekhart Lucas
  • Patent number: 4587363
    Abstract: Oxygen-containing compounds are prepared by oxidizing a hydrocarbon in the liquid phase with a gas containing molecular oxygen, at elevated temperatures and under superatmospheric pressure, by a continuous process in which the said gas is fed into the liquid reaction mixture, in a downward direction, at several points along the reaction zone via nozzle apertures, so that it emerges at each nozzle aperture with a velocity of from 0.01 to 1 m/sec in an amount of from 0.001 to 10 liters per second per nozzle aperture, and the said reaction mixture is brought into substantially uniform contact with the gas containing molecular oxygen, over the volume of the reaction zone.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: May 6, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Jurgen Hartig, Gunter Schuch, Armin Stoessel, Guenter Herrmann, Arthur Brunner, Peter Zehner, Otto-Alfred Grosskinsky
  • Patent number: 4543427
    Abstract: Cyclohexanol and cyclohexanone are prepared by treating cyclohexyl hydroperoxide with a supported catalyst containing from 2 to 30% by weight, calculated as cobalt, of cobalt in oxidic form, at from 30.degree. to 160.degree. C., by a process wherein a zeolite is used as the carrier.
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: September 24, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Hartig, Armin Stoessel, Guenter Herrmann, Laszlo Marosi
  • Patent number: 4491637
    Abstract: Supported catalysts containing from 2 to 30% by weight, calculated as cobalt, of cobalt in oxidic form on a zeolite carrier, and their preparation.
    Type: Grant
    Filed: May 31, 1983
    Date of Patent: January 1, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Hartig, Armin Stoessel, Guenter Herrmann, Laszlo Marosi