Patents by Inventor Imre Toth

Imre Toth 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).

  • Publication number: 20040143140
    Abstract: A continuous process for producing an aldehyde comprising 1) feeding an olefinically unsaturated compound, carbon monoxide, hydrogen and a rhodium-organobisphosphite complex catalyst to a hydroformylation reactor and 2) reacting an olefinically unsaturated compound with carbon monoxide and hydrogen in the presence of a rhodium-organobisphosphite complex catalyst, wherein
    Type: Application
    Filed: March 12, 2004
    Publication date: July 22, 2004
    Inventors: Otto Erik Sielcken, Hubertus Adrianus Smits, Imre Toth
  • Publication number: 20040039226
    Abstract: Process for the carbonylation of a conjugated diene by reacting the conjugated diene with carbon monoxide and an hydroxyl group containing compound in the presence of a catalyst system based on: (a) a source of palladium cations, (b) a diphosphine ligand, and (c) a source of anions, wherein the diphosphine ligand is a ligand having the general formula I wherein x1 and x2 represent a cyclic group with at least 5 ring atoms, of which one is a phosphorus atom, and R represents a bivalent aliphatic bridging group, connecting both phosphorus atoms, containing from 2 to 4 atoms inthe bridge, which is substituted with at least one substituent orR represents a phenyl group with both phosphorus groups bound to the 1,2-position.
    Type: Application
    Filed: August 25, 2003
    Publication date: February 26, 2004
    Inventors: Eit Drent, Willem Wabe Jager, Otto Erik Sielcken, Imre Toth
  • Publication number: 20030175188
    Abstract: A process for the recovery of rhodium from an organic reaction mixture containing rhodium/phosphite ligand complex, phosphite degradation products and high boiler organic compounds, wherein
    Type: Application
    Filed: May 22, 2003
    Publication date: September 18, 2003
    Inventors: Onko Jan Gelling, Imre Toth
  • Patent number: 6268530
    Abstract: Process to separate linear 5-formylvaleric acid from a mixture of 5- and 3- and 4-formylvaleric acids, wherein the separation is performed by fractional extraction with two immiscible solvents of which one solvent is an aqueous solvent and the other solvent is an organic solvent, in which the organic solvent has a higher or lower affinity for 5-formylvaleric acid than its affinity for the 3-formylvaleric acids and for the 4-formylvaleric acid. Furthermore the invention relates to an improved process to prepare ∈-caprolactam starting from a mixture of branched and linear formylvaleric acids or starting from pentenoic acid.
    Type: Grant
    Filed: January 5, 1998
    Date of Patent: July 31, 2001
    Assignees: DSM N.V., E. I. DuPont de Nemours and Company
    Inventors: Imre Toth, Onko Gelling, Rudolf P. M. Guit, Antonius J. F. Simons, Simon Hans H. Niemann
  • Patent number: 6232262
    Abstract: Catalyst system comprising a palladium compound, an acid compound having a pKa>2 measured in water of 18° C. and an non-symmetrical bidentate phosphorous ligand according to: in which the —PR1R2 group is different from the —PR3R4 group and in which X is a divalent organic bridging group, in which the shortest direct link between the two phosphorous atoms in the bridging group X consists of a chain of 2-10 carbon atoms and optionally a sulphur or oxygen atom.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: May 15, 2001
    Assignee: DSM N?V?
    Inventors: Otto E. Sielcken, Henk Oevering, Frank P. W. Agterberg, Paulus F. A. Buijsen, Imre Toth
  • Patent number: 6013816
    Abstract: Process for the preparation of a linear .omega.-formyl-carboxylic acid or a corresponding linear formylnitrile compound starting from an internally unsaturated C.sub.4 -C.sub.12 carboxylic acid or a corresponding ester or nitrile by means of hydroformylation in the presence of carbon monoxide, hydrogen and a catalyst system, wherein the hydroformylation is carried out in an aqueous medium and in that the catalyst system comprises platinum and a water-soluble organic bidentate ligand.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: January 11, 2000
    Assignee: DSM NV
    Inventors: Onko J. Gelling, Imre Toth
  • Patent number: 5698745
    Abstract: A hydroformylation process for the production of linear aldehydes of an olefin, with hydrogen and carbon monoxide in a solvent containing a catalyst having a platinum component, a bidentate diaryl phosphine component where the bridging group is ferrocenyl, and an acid promoter component.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: December 16, 1997
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Patrick Michael Burke, Onko Jan Gelling, Henk Oevering, Imre Toth
  • Patent number: 5670700
    Abstract: A hydroformylation process for the production of 5-formylvaleric acid from 2-, or 3-pentenoic acid, or 5-formylvaleric acid ester from 2-, or 3-pentenoic acid ester, or 5-formylvaleronitrile from 2-, or 3-pentenenitrile by reaction with hydrogen and carbon monoxide in a solvent containing a catalyst having a platinum component, a bidentate diaryl phosphine component, an acid promoter component.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: September 23, 1997
    Assignees: E. I. Du Pont de Nemours and Company, DSM, N.V.
    Inventors: Patrick Michael Burke, Onko Jan Gelling, Henk Oevering, Imre Toth
  • Patent number: 5072022
    Abstract: The invention relates to a novel herbicide composition, which comprises the (S) enantiomer or racemate of a compound of the general formula (I), ##STR1## wherein R stands for a methyl or ethyl group, as active ingredient in an amount of 0.01 to 95% by weight together with one or more solid and/or liquid carrier(s), preferably grist(s) of native or synthetic material(s) and/or with inert solvents(s), preferably xylene(s) and/or cyclohexanone; and optionally with surface active agents(s), preferably anionic and/or nonionic emulsifying or dispersing agent(s).The invention further relates to the above compounds of the general formula (I) as well as to a process for the preparation thereof.The compounds according to the invention possess an outstanding herbicidal effect (over 90%) and advantageous selectivity threshold values against cultivated plants.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: December 10, 1991
    Assignee: Budapest Vegyimuvek
    Inventors: Jozsef Bakos, Balint Heil, Imre Toth, Bela des, Istvan Gebhardt, Ferenc Bihari, Anna Durkonee Ponacz, Gyula Eifert, Jeno Kiraly, Eva Konok nee Horvath, Laszlo Lukacs, Agnes Meszaros nee Szekrenyesi, Bela Radvany, Lajos Sarosi
  • Patent number: 5008440
    Abstract: A herbicide composition, which comprises (S)-1'-methoxycarbonylethyl 2-bromo-5-(2-chloro-4-trifluoromethylphenoxy) benzoate or (S)-1'-ethoxycarbonylethyl 2-bromo-5-(2-chloro-4-trifluoromethylphenoxy)benzoate as active ingredient in an amount of 0.01 to 95.0% by weight together with one or more solid and/or liquid carriers, preferably grists of native or synthetic materials; and/or with inert solvents, preferably xylenes and/or cyclohexanone; and optionally with surface active agents, preferably anionic and/or nonionic emulsifying or dispersing agents.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: April 16, 1991
    Assignee: Budapesti Vegyimuvek
    Inventors: Jozsef Bakos, Balint Heil, Imre Toth, Bela des, Istvan Gebhardt, Ferenc Bihari, Anna Durko nee Ponacz, Gyula Eifert, Jeno Kiraly, Eva Konok nee Horvath, Laszlo Lukacs, Agnes Meszaros nee Szekrenyesi, Bela Radvany, Lajos Sarosi
  • Patent number: 4775569
    Abstract: The invention relates to elastic padded, washable, antiseptic articles for personal use, particularly for therapeutic equipment, pillows, protective garments and similar objects. According to the invention idea, an antistatic slip of max. 20 kg/m.sup.3 specific weight is filled with regularly cut, but irregularly arranged, static open cellular polyeter type pieces of polyurathane foam, the material of which is antiseptic.The invention includes the production, characterized in that in the course of preparing the polyurathane foam, 0.4-1.6 weight % enzymatic decomposition-inhibiting additive is added to the polyol component. The block of foam is split up, then cut to pieces with rotary and/or swinging knives, and the static pieces are blown from the knives into the slip to be filled.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: October 4, 1988
    Assignee: Innovatext Kutato es Fejleszto Vallalat
    Inventors: Bela Alpar, Lajos Katona, Erzsebet Paal nee Trangoni, Imre Toth, Dezso Varga
  • Patent number: 4156102
    Abstract: An improved method and apparatus for producing ferro-alloys from ore in which an ore is first mixed with a solid reducing agent, preheated and pre-reduced in a rotary kiln, and smelted in an electric furnace, in which the pre-reduced ore is heated by a burner provided in the electric furnace where it is also reoxidized. The ore is also heated in the rotary kiln by recycled gas.
    Type: Grant
    Filed: October 20, 1976
    Date of Patent: May 22, 1979
    Assignee: Societe Metallurgique le Nickel -SLN
    Inventors: Christian Mainot, Alain Robert, Imre Toth
  • Patent number: 4135916
    Abstract: The invention provides a process of producing steels containing nickel, particularly corrosion-resistant steels, which involves refining the metal bath obtained from the smelting of a ferro-nickel by adding to said metal bath in a refining converter ferro-nickel shot while concurrently contacting the metal bath with an oxygen-containing gas, e.g., a mixture of oxygen and argon, the addition of the ferro-nickel shot being carried out while controlling the flow rate of the shot in such a way that the temperature of the converter is maintained at a pre-selected level and the contacting of the oxygen-containing gas with the bath being carried out until the carbon content of the bath is reduced to a low level, e.g., about 0.04%. The inventive process permits the initial carbon and silicon levels of the metal bath to exceed 1% and 0.4%, respectively.
    Type: Grant
    Filed: March 1, 1977
    Date of Patent: January 23, 1979
    Assignee: Societe Metallurgique le Nickel-SLN
    Inventor: Imre Toth