Patents by Inventor Rezso Csikos

Rezso Csikos 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: 4579722
    Abstract: The invention relates to a process for deironing red mud and bauxite and for the preparation of a raw material for alumina industry and of iron pentacarbonyl which comprises(a) activating the red mud or bauxite starting material at 150.degree.-800.degree. C. under a pressure of 0.1-100 bars in a reducing gas stream in the presence of one or more promoter(s) and thereafter(b) carbonylating at 50.degree.-300.degree. C. under a pressure of 25-300 bars with carbon monoxide or a gas containing carbon monoxide and removing the iron pentacarbonyl formed from the system.The advantage of the present invention is that it provides a process for the effective removal of the iron content of red mud or bauxite and moreover it enables the utilization of the removed iron in the valuable form of iron pentacarbonyl which is suitable for use in iron metallurgy.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: April 1, 1986
    Assignee: Budapesti Muszki Egyetem
    Inventors: Rezso Csikos, Jozsef Bathory, Istvan Farkas
  • Patent number: 4242526
    Abstract: Methyl tertiary butyl ether is produced from a mixture of C.sub.4 hydrocarbons containing isobutylene and butadiene. The isobutylene is selectively reacted with a greater than stoichiometric amount of methanol at a temperature of 50 to 120 degrees C., in a homogeneous liquid phase and in the presence of a catalytic amount of sulfuric acid. The sulfuric acid is present in an amount less than 20% by weight based on the weight of the reaction mixture. The homogeneous liquid phase is maintained throughout the reaction whereby a reaction mixture containing methyl tertiary butyl ether is produced and undesired polymerization of the badadiene is avoided. The reaction mixture is cooled then reaction mixture which has been washed free of methanol, or separated unreacted C.sub.4 fraction which is isobutylene-free, is added. An upper phase containing hydrocarbons and methyl tertiary butyl ether and a part of the methanol and a lower phase containing methanol and 10 to 50% sulfuric acid is formed.
    Type: Grant
    Filed: March 8, 1978
    Date of Patent: December 30, 1980
    Assignee: Magyar Asvanyolaj es Foldgaz Kiserleti Intezet
    Inventors: Janos Laky, Rezso Csikos, Lajos Peterfy, Lajos Szvetelszky, Istvan Pallay
  • Patent number: 4214032
    Abstract: The insulating felt comprises 23 to 39% by weight of pyrolytic resin, 35 to 54% by weight of asphalt, 4 to 7% by weight of softener, 2.5 to 8% by weight plasticizer, 2 to 4% by weight of fine grained material and 10 to 25% by weight of reinforcing material. The felt is useful for water proofing or preventing corrosion of metal and concrete objects.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: July 22, 1980
    Assignee: Magyar Asvanyolaj es Foldgaz Kiserleti Intezet
    Inventors: Rezso Csikos, Andras Balogh, Jozsef Herendi, L. Peter Farkas, Janos Remenyi, Sandor Koltay
  • Patent number: 4207261
    Abstract: The invention relates to a process for preparing o-phenylenediamine. According to the invention 1,4-dichlorobenzene is nitrated to give 2,5-dichloro-nitrobenzene which is then reacted with an aqueous ammonium hydroxide solution and the 4-chloro-2-nitraniline obtained is subjected to catalytic hydrogenation to afford the end product which can thereafter be separated.The process according to the invention can be accomplished with a total yield of about 90% related to the 1,4-dichlorobenzene starting compound.o-Phenylenediamine is a valuable intermediate for instance in the synthesis of plant protecting agents and heat-resistant polymers.
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: June 10, 1980
    Assignee: Magyar Asvanyolaj es Foldgaz Kiserleti Intezet
    Inventors: Rezso Csikos, Zoltan Decsy, Zeno Trocsanyi, Zsolt Varga, Zsuzsa Wittman
  • Patent number: 4148959
    Abstract: A self adhesion ensuring layer having a total thickness of 0.05 to 0.2 mm is carried on a PVC-foil carrier sheet having a thickness of 0.2 to 0.5 mm. The self adhesion ensuring layer comprises 70 to 100% by weight of synthetic caoutchouc, 0 to 16% by weight bitumin and 0 to 14% by weight talc. A ground layer may be interposed between the carrier sheet and self adhesion ensuring layer. The resultant system is useful for insulation of underground pipe.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: April 10, 1979
    Assignee: Magyar Asvanyolaj es Foldgaz Kiserleti Intezet
    Inventors: Rezso Csikos, Andras Balogh, Jozsef Herendi, Katalin Gregor, nee Balogh