Patents by Inventor Sunggyu Lee

Sunggyu Lee 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: 20130071317
    Abstract: Hydrogen is produced from methanol and water under supercritical temperature and pressure conditions desirably without any catalyst. The hydrogen can be produced in situ on an internal combustion engine using a heat source such as the exhaust system of the internal combustion engine to achieve the supercritical temperature.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 21, 2013
    Applicant: NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION
    Inventor: Sunggyu Lee
  • Patent number: 8202548
    Abstract: A method of making a composition having the property of being able to store chlorine dioxide includes mixing an aqueous chlorine dioxide solution with a superabsorbent, water-soluble polymer that is substantially unreactive with chlorine dioxide and permitting a mixture formed thereby to form one of a gel and a solid composition. A method of delivering chlorine dioxide includes providing a gel or solid composition as described and degelling the gel or dissolving the solid composition to dispense the chlorine dioxide therefrom. A method of disinfecting a target such as water, wastewater, or a surface comprises delivering chlorine dioxide as above and permitting the polymer to precipitate out of the mixture. Aqueous chlorine dioxide is then recovered and applied to the target.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: June 19, 2012
    Assignee: Dharma IP, LLC
    Inventors: Sunggyu Lee, Patricia Roberts
  • Patent number: 8088417
    Abstract: A method of making a composition having the property of being able to store chlorine dioxide includes mixing an aqueous chlorine dioxide solution with a superabsorbent, water-soluble polymer that is substantially unreactive with chlorine dioxide and permitting a mixture formed thereby to form one of a gel and a solid composition. A method of delivering chlorine dioxide includes providing a gel or solid composition as described and degelling the gel or dissolving the solid composition to dispense the chlorine dioxide therefrom. A method of disinfecting a target such as water, wastewater, or a surface comprises delivering chlorine dioxide as above and permitting the polymer to precipitate out of the mixture. Aqueous chlorine dioxide is then recovered and applied to the target.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: January 3, 2012
    Assignee: Dharma IP, LLC
    Inventors: Sunggyu Lee, Patricia Roberts
  • Publication number: 20110293482
    Abstract: A system for reforming diesel fuel into hydrogen including feeds for water and diesel fuel, a supercritical water (SCW) reactor in fluid communication with the water feed and the diesel fuel, at least one pre-heater in thermal communication with the water feed, the diesel fuel feed that is configured to heat water from the water feed and diesel fuel from the diesel fuel feed to a predetermined temperature equal to or greater than the critical temperature of water before the water and the diesel fuel are mixed, a water-gas shift (WGS) reactor, and a hydrogen capturing system, where the SCW reactor reforms the diesel fuel into a synthesis gas comprising a mixture of hydrogen and carbon monoxide and outputs the synthesis gas, the synthesis gas output by the SCW reactor is fed into the WGS reactor which converts the carbon monoxide into carbon dioxide and hydrogen and outputs an output gas including a higher percentage of hydrogen to carbon monoxide compared to the synthesis gas, and the hydrogen in the output ga
    Type: Application
    Filed: July 28, 2011
    Publication date: December 1, 2011
    Applicant: DRS SUSTAINMENT SYSTEMS, INC.
    Inventors: John R. Wootton, Sunggyu Lee, Asdrubal Garcia-Ortiz
  • Patent number: 8038743
    Abstract: A supercritical water reformer (SCWR) and methods for using supercritical water to convert hydrocarbons, particularly hydrocarbon fuels such as diesel fuel or gasoline, into carbonaceous gases and hydrogen. The synthesis gas stream generated by the fuel reforming reaction can then be further refined to increase hydrogen content, and the resultant hydrogen can be utilized to power fuel cells.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: October 18, 2011
    Assignee: DRS Sustainment Systems, Inc.
    Inventors: John R. Wootton, Sunggyu Lee, Asdrubal Garcia-Ortiz
  • Patent number: 7931711
    Abstract: Methods for using supercritical water to convert hydrocarbons, particularly hydrocarbon fuels such as diesel fuel, jet fuel, or gasoline, into carbonaceous gases and hydrogen. The synthesis gas stream generated by the fuel reforming reaction can then be further refined to increase hydrogen content, and the resultant hydrogen can be utilized to power fuel cells.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: April 26, 2011
    Assignee: DRS Sustainment Systems, Inc.
    Inventors: John R. Wootton, Sunggyu Lee, Asdrubal Garcia-Ortiz
  • Patent number: 7811537
    Abstract: Systems and methods using the properties of supercritical water to allow raw air including a contaminant to be combined with water and to be purified in a supercritical water oxidation (SCWO) process. A supercritical water oxidation (SCWO) air purifier will generally take in a mixture of water and raw air which includes oxygen via a pumping and mixing apparatus, put the mixture into a supercritical water reactor (SCWR), and run the resultant effluent stream through a system for separating the water from the resultant clean air and the other relatively harmless outputs of the supercritical water reactor (SCWO).
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: October 12, 2010
    Assignee: DRS Sustainment Systems, Inc.
    Inventors: Asdrubal Garcia-Ortiz, Sunggyu Lee, John Wootton
  • Patent number: 7722823
    Abstract: Systems and methods using the properties of supercritical water to allow raw air including a contaminant to be combined with water and to be purified in a supercritical water oxidation (SCWO) process. A supercritical water oxidation (SCWO) air purifier will generally take in a mixture of water and raw air which includes oxygen via a pumping and mixing apparatus, put the mixture into a supercritical water reactor (SCWR), and run the resultant effluent stream through a system for separating the water from the resultant clean air and the other relatively harmless outputs of the supercritical water reactor (SCWO).
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: May 25, 2010
    Assignee: DRS Sustainment Systems, Inc.
    Inventors: Asdrubal Garcia-Ortiz, Sunggyu Lee, John Wootton
  • Publication number: 20080181973
    Abstract: A method of making a composition having the property of being able to store chlorine dioxide includes mixing an aqueous chlorine dioxide solution with a superabsorbent, water-soluble polymer that is substantially unreactive with chlorine dioxide and permitting a mixture formed thereby to form one of a gel and a solid composition. A method of delivering chlorine dioxide includes providing a gel or solid composition as described and degelling the gel or dissolving the solid composition to dispense the chlorine dioxide therefrom. A method of disinfecting a target such as water, wastewater, or a surface comprises delivering chlorine dioxide as above and permitting the polymer to precipitate out of the mixture. Aqueous chlorine dioxide is then recovered and applied to the target.
    Type: Application
    Filed: July 19, 2007
    Publication date: July 31, 2008
    Inventors: Sunggyu Lee, Patricia Roberts
  • Publication number: 20080089807
    Abstract: A method of making a composition having the property of being able to store chlorine dioxide includes mixing an aqueous chlorine dioxide solution with a superabsorbent, water-soluble polymer that is substantially unreactive with chlorine dioxide and permitting a mixture formed thereby to form one of a gel and a solid composition. A method of delivering chlorine dioxide includes providing a gel or solid composition as described and degelling the gel or dissolving the solid composition to dispense the chlorine dioxide therefrom. A method of disinfecting a target such as water, wastewater, or a surface comprises delivering chlorine dioxide as above and permitting the polymer to precipitate out of the mixture. Aqueous chlorine dioxide is then recovered and applied to the target.
    Type: Application
    Filed: May 15, 2007
    Publication date: April 17, 2008
    Inventors: Sunggyu Lee, Patricia Roberts
  • Patent number: 7288127
    Abstract: An environmentally clean dual fuel for use in an internal combustion engine, comprising acetylene as a primary fuel and a combustible fuel, such as one or more fluids selected from an alcohol such as ethanol, methanol or any other alcohol or alcohols from the group comprising C1-C20 carbon chains, ethers such as from the group comprising dimethyl ether, diethyl ether, methyl t-butyl ether, ethyl t-butyl ether, t-amyl methyl ether, di-isopropyl ether and the like, low-molecular-weight esters such as from the group comprising methyl formate, methyl acetate, ethyl acetate, methyl propionate, ethyl propionate, ethyl malate, and butyl malate, and the like, or other suitable combustible fluid such as mineral spirits and the like, as a secondary fuel for operatively preventing early ignition and knock arising from the primary fuel.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: October 30, 2007
    Assignee: Go-Tec
    Inventors: Joseph W. Wulff, Maynard Hulett, Sunggyu Lee
  • Publication number: 20070214721
    Abstract: Methods for using supercritical water to convert hydrocarbons, particularly hydrocarbon fuels such as diesel fuel, jet fuel, or gasoline, into carbonaceous gases and hydrogen. The synthesis gas stream generated by the fuel reforming reaction can then be further refined to increase hydrogen content, and the resultant hydrogen can be utilized to power fuel cells.
    Type: Application
    Filed: May 23, 2007
    Publication date: September 20, 2007
    Inventors: John Wootton, Sunggyu Lee, Asdrubal Garcia-Ortiz
  • Publication number: 20070217980
    Abstract: Systems and methods using the properties of supercritical water to allow raw air including a contaminant to be combined with water and to be purified in a supercritical water oxidation (SCWO) process. A supercritical water oxidation (SCWO) air purifier will generally take in a mixture of water and raw air which includes oxygen via a pumping and mixing apparatus, put the mixture into a supercritical water reactor (SCWR), and run the resultant effluent stream through a system for separating the water from the resultant clean air and the other relatively harmless outputs of the supercritical water reactor (SCWO).
    Type: Application
    Filed: May 21, 2007
    Publication date: September 20, 2007
    Inventors: Asdrubal Garcia-Ortiz, Sunggyu Lee, John Wootton
  • Patent number: 7229647
    Abstract: A method of making a composition having the property of being able to store chlorine dioxide includes mixing an aqueous chlorine dioxide solution with a superabsorbent, water-soluble polymer that is substantially unreactive with chlorine dioxide and permitting a mixture formed thereby to form one of a gel and a solid composition. A method of delivering chlorine dioxide includes providing a gel or solid composition as described and degelling the gel or dissolving the solid composition to dispense the chlorine dioxide therefrom. A method of disinfecting a target such as water, wastewater, or a surface comprises delivering chlorine dioxide as above and permitting the polymer to precipitate out of the mixture. Aqueous chlorine dioxide is then recovered and applied to the target.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: June 12, 2007
    Inventors: Sunggyu Lee, Patricia Roberts
  • Patent number: 7217750
    Abstract: The present invention relates to various processes that utilize one or more supercritical fluids to disperse various inorganic and organic materials, including crystalline materials, into polymeric compositions, substrates or pre-formed articles without the utilization of melt processing of the polymeric compositions or exposing the various inorganic and organic materials and the polymers (or polymeric precursors) to a hot environment. The present invention also describes the unique properties that can be imparted to a polymer/resin composition or article once it has been subjected to a process according to the present invention versus those normally attributable to conventionally treated/processed polymer materials.
    Type: Grant
    Filed: January 20, 2003
    Date of Patent: May 15, 2007
    Assignee: Northern Technologies International Corporation
    Inventors: Mehmet A. Gencer, Sunggyu Lee, Abhay Sardesai, Donald A. Kubik
  • Patent number: 7217749
    Abstract: A process for rapidly infusing a synthetic resinous substrate with an alkali metal nitrite, comprises (a) essentially completely dissolving the alkali metal nitrite in supercritical carbon dioxide to form a solids-free solution having from about 1 to 15% by weight of the alkali metal nitrite; (b) contacting the synthetic resinous substrate with the solution for a time sufficient to transfer at least a portion of the alkali metal nitrite into the synthetic resinous substrate while maintaining the carbon dioxide under supercritical conditions; and, (c) decreasing pressure or temperature, or both, on the synthetic resinous material sufficiently to evolve carbon dioxide and leave micronized solid alkali metal nitrite crystals in an amount less than 2% by weight essentially uniformly distributed in the synthetic resinous substrate.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: May 15, 2007
    Assignee: Northern Technologies International Corporation
    Inventors: Mehmet A. Gencer, Sunggyu Lee, Abhay Sardesai, Donald A. Kubik
  • Patent number: 7186345
    Abstract: Supercritical water (SCW) systems and methods using the properties of supercritical water to allow a raw water stream including water and a contaminant to be purified. A supercritical water oxidation (SCWO), water purifier may generally include water and oxidizer (such as oxygen in air) pumping and mixing apparatus, a supercritical water reactor, and a system for separating the resultant purified water from other relatively harmless outputs of the supercritical water reactor.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: March 6, 2007
    Assignee: Engineered Support Systems, Inc.
    Inventors: Sunggyu Lee, Asdrubal Garcia-Ortiz, John Wootton
  • Patent number: 7091288
    Abstract: Polymerization of fluoroolefin monomers proceeds in a supercritical carbon dioxide solvent at high monomer loading levels to provide a high molecular weight polymer with low polydispersity and/or a unimodal molecular weight distribution.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: August 15, 2006
    Assignee: Arkema Inc.
    Inventors: Sunggyu Lee, H. Bryan Lanterman, Abhay Sardesai, Jonathan Wenzel, Benjamin Marshall, Jeffrey Hsing-Gan Yen, Ramin Amin-Sanayei, Maria Moucharik
  • Publication number: 20060088460
    Abstract: Systems and methods using the properties of supercritical water to allow raw air including a contaminant to be combined with water and to be purified in a supercritical water oxidation (SCWO) process. A supercritical water oxidation (SCWO) air purifier will generally take in a mixture of water and raw air which includes oxygen via a pumping and mixing apparatus, put the mixture into a supercritical water reactor (SCWR), and run the resultant effluent stream through a system for separating the water from the resultant clean air and the other relatively harmless outputs of the supercritical water reactor (SCWO).
    Type: Application
    Filed: October 22, 2004
    Publication date: April 27, 2006
    Inventors: Asdrubal Garcia-Ortiz, Sunggyu Lee, John Wootton
  • Publication number: 20060069223
    Abstract: Polymerization of fluoroolefin monomers proceeds in a supercritical carbon dioxide solvent at high monomer loading levels to provide a high molecular weight polymer with low polydispersity and/or a unimodal molecular weight distribution.
    Type: Application
    Filed: September 30, 2004
    Publication date: March 30, 2006
    Inventors: Sunggyu Lee, H. Lanterman, Abhay Sardesai, Jonathan Wenzel, Benjamin Marshall, Jeffrey Yen, Ramin Amin-Sanayei, Maria Moucharik