Patents by Inventor Istvan Nemes

Istvan Nemes 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).

  • Stable brown-coal/oil suspensions and a process for preparing same
    Patent number: 4859209
    Abstract: The invention relates to stable brown-coal/oil suspensions and a process for preparing same. The suspension contains 20 to 60% by mass of coal powder and 40 to 80% by mass of fuel oil of 25 to 70% by mass of an agglomerate and 30 to 75% by mass of fuel oil.The invention renders possible to utilize brown-coal powders of low value for heating purposes.
    Type: Grant
    Filed: January 22, 1987
    Date of Patent: August 22, 1989
    Assignee: MTA Kozponti Kemiai Kutato Intezet
    Inventors: Katalin Szabo nee Mogyorossi, Istvan Kalocsai, Istyan Gyoni, Karoly Remenyi, Gyorgy Plaveczky, Laszlo Kovacs, Dezso Gal, Istvan Nemes, Laszlo Botar, Akos Bencsura, Galina Moger nee Jeremejeva, Karoly Heberger, Andras Nemeth
  • Method for the production of liquid carbon compounds from coal
    Patent number: 4425219
    Abstract: The invention relates to an improved method for the production of liquid carbon compounds from coal. According to the invention coal is oxidized at 80.degree. to 300.degree. C. in the presence of the vapors of a C.sub.1-5 aliphatic alcohol, optionally under the introduction of steam, and then the liquid carbon compounds are separated from the resulting product mixture.The process according to the invention can also be performed under atmospheric pressure, 50-80% of the carbon content of the coal converted appear in the liquid product. The liquid product contains the more valuable fraction, boiling below 300.degree. C., as major component.
    Type: Grant
    Filed: July 31, 1981
    Date of Patent: January 10, 1984
    Assignee: Tatabanyai Szenbanyak
    Inventors: Erik Kroo, Laszlo Kovacs, Istvan Nemes, Katalin Szabo nee Mogyorosi, Geza Szentgyorgyi, Galina Moger nee Eremineva, Andras Nemeth, Dezso Gal, Szilard Riederauer, Janos Szepvolgyi
  • Method for the chemical utilization of coal by liquid phase oxidation
    Patent number: 4368333
    Abstract: The invention relates to an improved method for the liquid phase oxidation of coal performed with oxygen optionally in the presence of water. According to the invention oxidation is performed in the presence of a cooxidation partner selected from the group of liquid hydrocarbons and oxygen-containing liquid hydrocarbons, and if water is also present, the pH of the homogeneous solution formed from the cooxidation partner and water is maintained at a slightly acidic value.By the method of the invention the formation of carbon dioxide can be suppressed significantly.
    Type: Grant
    Filed: July 31, 1981
    Date of Patent: January 11, 1983
    Assignee: Tatabanyai Szenbanyak
    Inventors: Laszlo Kovacs, Galina Moger nee Eremineva, Dezso Gal, Peter Hajdu, Julia Lukacs, Erik Kroo, Istvan Nemes, Andras Nemeth, Katalin Szabo nee Mogyorosi, Geza Szentgyorgyi, Szilard Riederauer, Janos Szepvolgyi