Patents by Inventor Laszlo T. Nemeth

Laszlo T. Nemeth 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: 8748333
    Abstract: Surface-modified zeolites and methods for preparing surface-modified zeolites are provided. A hybrid polymer formed from a silicon alkoxide and a metal alkoxide, a co-monomer, or both, is contacted with a zeolite suspension. The zeolite suspension comprises a sodium-, an ammonium-, or a hydrogen-form zeolite and a solvent. The hybrid polymer and zeolite suspension are contacted under conditions sufficient to deposit hybrid polymer on external surfaces of the zeolite to form a treated zeolite. Solvent is removed therefrom. The treated zeolite is dried and calcinated to form a dried and calcinated treated zeolite. Forming of the zeolite suspension and the contacting, removing, drying, and calcinating steps are provided in one selectivation sequence to produce a surface-modified zeolite from the ammonium-form zeolite and the hydrogen-form zeolite. If the dried and calcinated treated zeolite is a sodium-form zeolite, the sodium is exchanged with ammonium and then additionally dried and calcinated.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: June 10, 2014
    Assignee: UOP LLC
    Inventors: Laszlo T. Nemeth, Feng Xu
  • Patent number: 8614160
    Abstract: Catalyst compositions comprising a siliceous zeolite component, either in separately formed catalyst particles or dispersed in the same binder or matrix as other zeolites of the compositions, are described. The catalyst compositions, for example as blends of three different bound zeolite catalysts, are particularly useful in fluid catalytic cracking (FCC) processes due to the reductions in coke and dry gas yields that allow FCC throughput, which is normally constrained by gas handling and/or catalyst regeneration capacity, to be increased.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: December 24, 2013
    Assignee: UOP LLC
    Inventors: Lawrence L. Upson, Laszlo T. Nemeth
  • Publication number: 20130296160
    Abstract: Surface-modified zeolites and methods for preparing surface-modified zeolites are provided. A hybrid polymer formed from a silicon alkoxide and a metal alkoxide, a co-monomer, or both, is contacted with a zeolite suspension. The zeolite suspension comprises a sodium-, an ammonium-, or a hydrogen-form zeolite and a solvent. The hybrid polymer and zeolite suspension are contacted under conditions sufficient to deposit hybrid polymer on external surfaces of the zeolite to form a treated zeolite. Solvent is removed therefrom. The treated zeolite is dried and calcinated to form a dried and calcinated treated zeolite. Forming of the zeolite suspension and the contacting, removing, drying, and calcinating steps are provided in one selectivation sequence to produce a surface-modified zeolite from the ammonium-form zeolite and the hydrogen-form zeolite. If the dried and calcinated treated zeolite is a sodium-form zeolite, the sodium is exchanged with ammonium and then additionally dried and calcinated.
    Type: Application
    Filed: July 10, 2013
    Publication date: November 7, 2013
    Inventors: Laszlo T. Nemeth, Feng Xu
  • Publication number: 20120149550
    Abstract: Catalyst compositions comprising a siliceous zeolite component, either in separately formed catalyst particles or dispersed in the same binder or matrix as other zeolites of the compositions, are described. The catalyst compositions, for example as blends of three different bound zeolite catalysts, are particularly useful in fluid catalytic cracking (FCC) processes due to the reductions in coke and dry gas yields that allow FCC throughput, which is normally constrained by gas handling and/or catalyst regeneration capacity, to be increased.
    Type: Application
    Filed: February 8, 2012
    Publication date: June 14, 2012
    Applicant: UOP LLC
    Inventors: Lawrence L. UPSON, Laszlo T. NEMETH
  • Patent number: 8178740
    Abstract: A process for the use in the oligomerization of olefins is presented. The process produces a gasoline boiling range product having a high research octane number and almost no aromatics content. The process utilizes a solid catalyst comprising a zeolite that is treated with a phosphorous containing reagent to generate a catalyst having phosphorous content between 0.5 and 15 wt %.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: May 15, 2012
    Assignee: UOP LLC
    Inventors: Christopher P. Nicholas, Laszlo T. Nemeth, Deng-Yang Jan
  • Publication number: 20100274066
    Abstract: Catalyst compositions comprising a siliceous zeolite component, either in separately formed catalyst particles or dispersed in the same binder or matrix as other zeolites of the compositions, are described. The catalyst compositions, for example as blends of three different bound zeolite catalysts, are particularly useful in fluid catalytic cracking (FCC) processes due to the reductions in coke and dry gas yields that allow FCC throughput, which is normally constrained by gas handling and/or catalyst regeneration capacity, to be increased.
    Type: Application
    Filed: April 23, 2009
    Publication date: October 28, 2010
    Inventors: Lawrence L. Upson, Laszlo T. Nemeth
  • Publication number: 20100144514
    Abstract: A catalyst, and the process for producing the catalyst, for use in the oligomerization of olefins is presented. The catalyst comprises a zeolite that is treated with a phosphorous containing reagent to generate a treated catalyst having phosphorous content between 0.5 and 15 wt %, and having a micropore volume of less than 50% of the untreated catalyst.
    Type: Application
    Filed: December 9, 2008
    Publication date: June 10, 2010
    Inventors: Christopher P. Nicholas, Laszlo T Nemeth, Deng-Yang Jan
  • Publication number: 20100145123
    Abstract: A process for the use in the oligomerization of olefins is presented. The process produces a gasoline boiling range product having a high research octane number and almost no aromatics content. The process utilizes a solid catalyst comprising a zeolite that is treated with a phosphorous containing reagent to generate a catalyst having phosphorous content between 0.5 and 15 wt %.
    Type: Application
    Filed: December 9, 2008
    Publication date: June 10, 2010
    Inventors: Christopher P. Nicholas, Laszlo T. Nemeth, Deng-Yang Jan
  • Publication number: 20100144513
    Abstract: A catalyst, and the process for producing the catalyst, for use in the oligomerization of olefins is presented. The catalyst comprises a zeolite that is treated with a phosphorous containing reagent to generate a treated catalyst having phosphorous content between 0.5 and 15 wt % and a micropore volume of less than 50% of the untreated catalyst.
    Type: Application
    Filed: December 9, 2008
    Publication date: June 10, 2010
    Inventors: Christopher P. Nicholas, Laszlo T. Nemeth, Deng-Yang Jan
  • Patent number: 7638060
    Abstract: An adsorbent for removal of impurities from silicone based solvents is presented. The adsorbent is regenerable for repeated use in cleaning silicone based solvents.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: December 29, 2009
    Assignee: UOP LLC
    Inventors: Laszlo T. Nemeth, Anil R. Oroskar, Santi Kulprathipanja, Rusty M. Pittman
  • Publication number: 20090159502
    Abstract: The present invention provides a catalyst particle for decomposing a peroxide compound into an alcohol compound, the catalyst particle having an acidic zeolite material having an iron containing material in the framework position or the non-framework position and being present in an amount by weight of the catalyst particle from 100 ppm to 10,000 ppm.
    Type: Application
    Filed: December 19, 2007
    Publication date: June 25, 2009
    Inventors: Laszlo T. Nemeth, Susie Martins
  • Patent number: 7442283
    Abstract: A device and process is presented for producing hydrogen peroxide on an as needed basis is disclosed. The process and device produces hydrogen peroxide on a small scale without the addition of chemicals and disposal of waste streams.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: October 28, 2008
    Assignee: UOP LLC
    Inventors: Sanjay N. Gandhi, Robert T. Sprague, Lin Li, Massimo Sangalli, Kurt M. Vanden Bussche, Richard A. Janicki, Anil R. Oroskar, Laszlo T. Nemeth, Kerry S. Crosby, Pat Palmese
  • Patent number: 7431843
    Abstract: An apparatus and process for removing impurities from silicone based solvents is presented. The apparatus and process use an adsorbent for removing contaminants from the solvent, and when the adsorbent is sufficiently loaded with contaminants, the adsorbent is regenerated. The regeneration process entails a two stage heating process for recovery of solvent and removal of contaminants.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: October 7, 2008
    Assignee: UOP LLC
    Inventors: Gavin P. Towler, Laszlo T. Nemeth
  • Patent number: 7422676
    Abstract: A device is disclosed for the generation of hydrogen peroxide. The device produces hydrogen peroxide on an as-needed basis through the use of electrolysis of water, remixing hydrogen and oxygen in an appropriate ratio, and reacting the hydrogen and oxygen in water in a reactor.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: September 9, 2008
    Assignee: UOP LLC
    Inventors: Kurt M. Vanden Bussche, Anil R. Oroskar, Jeffery C. Bricker, Laszlo T. Nemeth, Gavin P. Towler
  • Patent number: 7354461
    Abstract: A solid fuel for use in fuel cells is presented. The solid fuel includes solid oxygenates, and mixtures for generating a gaseous fuel from the solid fuel. The solid fuel can be contained in a cartridge and reacted with a liquid reactant for generating a gaseous fuel used in the fuel cell.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: April 8, 2008
    Assignee: UOP LLC
    Inventors: Laszlo T. Nemeth, Anil R. Oroskar, Kurt M. Vanden Bussche, Gavin P. Towler, Rusty M. Pittman
  • Patent number: 7329624
    Abstract: An adsorbent for removal of impurities from silicone based solvents is presented. The adsorbent is regenerable for repeated use in cleaning silicone based solvents.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: February 12, 2008
    Assignee: UOP LLC
    Inventors: Laszlo T. Nemeth, Anil R. Oroskar, Santi Kulprathipanja, Rusty M. Pittman
  • Patent number: 7258795
    Abstract: A process and adsorbent for removing contaminants from silicone based solvents is disclosed. The process provides for cleaning a solvent for reuse, and regeneration of the adsorbent. The adsorbents are for adsorbing organic and inorganic compounds that have accumulated in the silicone solvents.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: August 21, 2007
    Assignee: UOP LLC
    Inventors: Laszlo T. Nemeth, Anil R. Oroskar, Edith M. Flanigen
  • Patent number: 7115192
    Abstract: A device is disclosed for the generation of hydrogen peroxide. The device produces hydrogen peroxide on an as-needed basis through the use of electrolysis of water, remixing hydrogen and oxygen in an appropriate ratio, and reacting the hydrogen and oxygen in water in a reactor.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: October 3, 2006
    Assignee: UOP LLC
    Inventors: Kurt M. Vanden Bussche, Anil R. Oroskar, Jeffery C. Bricker, Laszlo T. Nemeth, Gavin P. Towler
  • Patent number: 7022306
    Abstract: A process and apparatus are disclosed for the generation of hydrogen from hydrogen rich compounds. The process uses hydrogen peroxide as an oxidizer with a hydrogen rich compound forming a mixture such that when the mixture is exposed to a catalyst forming a hydrogen rich gas.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: April 4, 2006
    Assignee: UOP LLC
    Inventors: Anil R. Oroskar, Kurt M. Vanden Bussche, Laszlo T. Nemeth, Christine M. Rayner
  • Patent number: 6872866
    Abstract: A liquid or partially liquid phase process for isomerizing a non-equilibrium mixture of xylenes and ethylbenzene uses a zeolitic catalyst system preferably based on zeolite beta and on pentasil-type zeolite. The invention obtains an improved yield of para-xylene from the mixture relative to prior art processes in a more economical manner. A preferred beta zeolite is a surface-modified zeolite beta resulting from acid washing of a templated native zeolite at conditions insufficient to effect bulk dealumination. A preferred pentasil zeolite is a MTW-type with a silica-to-alumnina ratio between 20 and 45.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: March 29, 2005
    Assignee: UOP LLC
    Inventors: Laszlo T. Nemeth, Gregory F. Maher