Patents by Inventor Minquan Cheng

Minquan Cheng 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: 8869890
    Abstract: A method and system for processing produced fluids from a subterranean reservoir is disclosed. The system comprises: (a) a separator for separating produced fluids from a subterranean reservoir into associated gases, water and crude oil, (b) a membrane which receives at least a portion of the associated gases containing the hydrogen sulfide and separates the gas into a permeate stream enriched in hydrogen sulfide and carbon dioxide and a retentate stream depleted in hydrogen sulfide and carbon dioxide; (c) an amine unit for removing carbon dioxide and hydrogen sulfide from the retentate stream; and (d) a sour gas injection unit for injecting at the permeate stream in an underground formation.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: October 28, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Daniel Chinn, Jen Kai Chen, James Ong, Minquan Cheng, Oluwasijibomi O. Okeowo
  • Patent number: 8258195
    Abstract: A method is disclosed for converting syngas to Fischer-Tropsch (F-T) hydrocarbon products. A synthesis gas including carbon monoxide and hydrogen gas is provided to a F-T reactor. Also, acetylene is supplied to the F-T reactor. The ratio of the volume of acetylene to the volume of synthesis gas is at least 0.01. The synthesis gas and acetylene are reacted under suitable reaction conditions and in the presence of a catalyst to produce F-T hydrocarbon products. The F-T hydrocarbon products are then recovered from the reactor. The synthesis gas and acetylene may be provided in a combined feed stream or introduced separately into the reactor. The acetylene enhanced syngas conversion in a F-T reactor results in the synthesis of F-T products which have a tighter distribution of intermediate length carbon products than do F-T products synthesized according to conventional methods.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: September 4, 2012
    Assignees: Chevron U.S.A. Inc., Commonwealth Scientific and Industrial Research Organisation
    Inventors: Charles L. Kibby, Minquan Cheng, Yun Lei, David Lawrence Trimm, William L. Schinski
  • Publication number: 20120168154
    Abstract: A method and system for processing produced fluids from a subterranean reservoir is disclosed. The system comprises: (a) a separator for separating produced fluids from a subterranean reservoir into associated gases, water and crude oil, (b) a membrane which receives at least a portion of the associated gases containing the hydrogen sulfide and separates the gas into a permeate stream enriched in hydrogen sulfide and carbon dioxide and a retentate stream depleted in hydrogen sulfide and carbon dioxide; (c) an amine unit for removing carbon dioxide and hydrogen sulfide from the retentate stream; and (d) a sour gas injection unit for injecting at the permeate stream in an underground formation.
    Type: Application
    Filed: December 20, 2011
    Publication date: July 5, 2012
    Applicant: Chevron U.S.A. Inc.
    Inventors: Daniel Chinn, Jen Kai Chen, James Ong, Minquan Cheng, Oluwasijibomi O. Okeowo
  • Publication number: 20120172459
    Abstract: A method is disclosed for converting syngas to Fischer-Tropsch (F-T) hydrocarbon products. A synthesis gas including carbon monoxide and hydrogen gas is provided to a F-T reactor. Also, acetylene is supplied to the F-T reactor. The ratio of the volume of acetylene to the volume of synthesis gas is at least 0.01. The synthesis gas and acetylene are reacted under suitable reaction conditions and in the presence of a catalyst to produce F-T hydrocarbon products. The F-T hydrocarbon products are then recovered from the reactor. The synthesis gas and acetylene may be provided in a combined feed stream or introduced separately into the reactor. The acetylene enhanced syngas conversion in a F-T reactor results in the synthesis of F-T products which have a tighter distribution of intermediate length carbon products than do F-T products synthesized according to conventional methods.
    Type: Application
    Filed: March 15, 2012
    Publication date: July 5, 2012
    Applicants: Commonwealth Scientific and Industrial Research Organisation, Chevron U.S.A. Inc.
    Inventors: Charles L. Kibby, Minquan Cheng, Yun Lei, David Lawrence Trimm, William L. Schinski
  • Patent number: 8163808
    Abstract: A method is disclosed for converting syngas to Fischer-Tropsch (F-T) hydrocarbon products. A synthesis gas including carbon monoxide and hydrogen gas is provided to a F-T reactor. Also, acetylene is supplied to the F-T reactor. The ratio of the volume of acetylene to the volume of synthesis gas is at least 0.01. The synthesis gas and acetylene are reacted under suitable reaction conditions and in the presence of a catalyst to produce F-T hydrocarbon products. The F-T hydrocarbon products are then recovered from the reactor. The synthesis gas and acetylene may be provided in a combined feed stream or introduced separately into the reactor. The acetylene enhanced syngas conversion in a F-T reactor results in the synthesis of F-T products which have a tighter distribution of intermediate length carbon products than do F-T products synthesized according to conventional methods.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: April 24, 2012
    Assignees: Chevron U.S.A. Inc., Commonwealth Scientific and Industrial Research Organisation
    Inventors: Charles L. Kibby, Minquan Cheng, Yun Lei, David Lawrence Trimm, William L. Schinski
  • Patent number: 7678958
    Abstract: This invention is directed to a method of removing dimethyl ether from an olefin stream. The method includes distilling the olefin stream so that the dimethyl ether is separated out of the olefin stream with propane. The olefin stream can then be further distilled to provide a polymer grade ethylene stream and a polymer grade propylene stream, with each stream containing not greater than about 10 wppm dimethyl ether.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: March 16, 2010
    Assignee: ExxonMobil Chemical Patents Inc
    Inventors: Minquan Cheng, Jeffrey J. Phillips, Michael Peter Nicoletti, David Ritchie Lumgair, Jr., John Richard Shutt, Jeffrey Alan Kabin, Wilfried Borgmann, Josef Kunkel, Helmut Fritz, Roland Walzi, Gerhard Lauermann, Klaus Muller
  • Publication number: 20090170965
    Abstract: A method is disclosed for converting syngas to Fischer-Tropsch (F-T) hydrocarbon products. A synthesis gas including carbon monoxide and hydrogen gas is provided to a F-T reactor. Also, acetylene is supplied to the F-T reactor. The ratio of the volume of acetylene to the volume of synthesis gas is at least 0.01. The synthesis gas and acetylene are reacted under suitable reaction conditions and in the presence of a catalyst to produce F-T hydrocarbon products. The F-T hydrocarbon products are then recovered from the reactor. The synthesis gas and acetylene may be provided in a combined feed stream or introduced separately into the reactor. The acetylene enhanced syngas conversion in a F-T reactor results in the synthesis of F-T products which have a tighter distribution of intermediate length carbon products than do F-T products synthesized according to conventional methods.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 2, 2009
    Inventors: Charles Leonard Kibby, Minquan Cheng
  • Patent number: 7244501
    Abstract: A composite sheet material that includes at least one porous core layer including a thermoplastic material and from about 20 weight percent to about 80 weight percent fibers based on a total weight of the porous core layer, and at least one skin covering a surface of the core layer. The skin includes at least one of a thermoplastic film, a fiber based scrim, a non-woven fabric, and a woven fabric.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: July 17, 2007
    Assignees: Azdel, Inc., General Electric Company
    Inventors: Venkatkrishna Raghavendran, Daniel Scott Woodman, Erich Otto Teutsch, Ralph Robert Buoniconti, Scott Michael Davis, Paul Anthony Bristow, Minquan Cheng, Daniel Wardell Sowle, Benny Ezekiel David
  • Publication number: 20060111601
    Abstract: This invention is directed to a method of removing dimethyl ether from an olefin stream. The method includes distilling the olefin stream so that the dimethyl ether is separated out of the olefin stream with propane. The olefin stream can then be further distilled to provide a polymer grade ethylene stream and a polymer grade propylene stream, with each stream containing not greater than about 10 wppm dimethyl ether.
    Type: Application
    Filed: September 30, 2002
    Publication date: May 25, 2006
    Inventors: Minquan Cheng, Jeffrey Phillips, Michael Nicoletti, David Lumgard Jr., John Shutt, Jeffrey Kabin, Wilfried Borgmann, Josef Kunkel, Helmut Fritz, Roland Walzi, Gerhard Lauermann, Klaus Muller
  • Publication number: 20050222474
    Abstract: Disclosed is a method of recovering oxygenates from an olefin production process and oxygenate compositions that can be recovered from an olefin production process. The recovered oxygenate compositions comprise a mixture of alcohols, ethers, ketones, and/or aldehydes.
    Type: Application
    Filed: May 25, 2005
    Publication date: October 6, 2005
    Inventors: Minquan Cheng, Michael Nicoletti
  • Publication number: 20050215698
    Abstract: A composite sheet material that includes at least one porous core layer including a thermoplastic material and from about 20 weight percent to about 80 weight percent fibers based on a total weight of the porous core layer, and at least one skin covering a surface of the core layer. The skin includes at least one of a thermoplastic film, a fiber based scrim, a non-woven fabric, and a woven fabric.
    Type: Application
    Filed: March 26, 2004
    Publication date: September 29, 2005
    Inventors: Venkatkrishna Raghavendran, Daniel Woodman, Erich Teutsch, Ralph Buoniconti, Scott Davis, Paul Bristow, Minquan Cheng, Daniel Sowle, Benny David
  • Patent number: 6855858
    Abstract: This invention is directed to a method of removing dimethyl ether from an olefin stream. The method includes distilling the olefin stream so that the dimethyl ether is separated out of the olefin stream with propane. The olefin stream can then be further distilled to provide a polymer grade ethylene stream and a polymer grade propylene stream, with each stream containing not greater than about 10 wppm dimethyl ether.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: February 15, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Minquan Cheng, Jeffrey J. Phillips, Michael Peter Nicoletti, David Ritchie Lumgair, Jr., John Richard Shutt, Jeffrey Alan Kabin
  • Patent number: 6660812
    Abstract: Disclosed is a system of making an olefin derivative from a dilute olefin feed. Dilute olefin is sent to an olefin reaction unit to form an olefin derivative product. The olefin derivative product is recovered from the reaction unit while a vent stream is also removed. Olefin is separated from the vent stream, and the olefin is sent to the olefin reaction unit for additional processing.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: December 9, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Keith H. Kuechler, Minquan Cheng, Marc L. DeChellis, David R. Lumgair, Jr., Russell D. Sellen, Gary F. Janda
  • Publication number: 20030130555
    Abstract: Disclosed is a method of recovering oxygenates from an olefin production process and oxygenate compositions that can be recovered from an olefin production process. The recovered oxygenate compositions comprise a mixture of alcohols, ethers, ketones, and/or aldehydes.
    Type: Application
    Filed: November 30, 2001
    Publication date: July 10, 2003
    Inventors: Minquan Cheng, Michael Peter Nicoletti
  • Publication number: 20030125597
    Abstract: This invention is directed to a method of removing dimethyl ether from an olefin stream. The method includes distilling the olefin stream so that the dimethyl ether is separated out of the olefin stream with propane. The olefin stream can then be further distilled to provide a polymer grade ethylene stream and a polymer grade propylene stream, with each stream containing not greater than about 10 wppm dimethyl ether.
    Type: Application
    Filed: July 15, 2002
    Publication date: July 3, 2003
    Inventors: Minquan Cheng, Jeffrey J. Phillips, Michael Peter Nicoletti, David Ritchie Lumgair,, John Richard Shutt, Jeffrey Alan Kabin
  • Patent number: 6559248
    Abstract: Disclosed is a method of purifying olefin containing oxygenate contaminants. The method incorporates the use of extractive distillation. Under the appropriate conditions, olefins containing very low levels of oxygenate contaminants can be recovered.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: May 6, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Dan E. Hendriksen, Minquan Cheng, Keith H. Kuechler, David R. Lumgair, Michael P. Nicoletti, Richard Shutt
  • Publication number: 20030045761
    Abstract: Disclosed is a system of making an olefin derivative from a dilute olefin feed. Dilute olefin is sent to an olefin reaction unit to form an olefin derivative product. The olefin derivative product is recovered from the reaction unit while a vent stream is also removed. Olefin is separated from the vent stream, and the olefin is sent to the olefin reaction unit for additional processing.
    Type: Application
    Filed: June 15, 2001
    Publication date: March 6, 2003
    Inventors: Keith H. Kuechler, Minquan Cheng, Marc L. DcChellis, David R. Lumgair, Russell D. Sellen, Gary F. Janda
  • Publication number: 20030045655
    Abstract: Disclosed is a method of purifying olefin containing oxygenate contaminants. The method incorporates the use of extractive distillation. Under the appropriate conditions, olefins containing very low levels of oxygenate contaminants can be recovered.
    Type: Application
    Filed: August 31, 2001
    Publication date: March 6, 2003
    Inventors: Dan E. Hendriksen, Minquan Cheng, Keith H. Kuechler, David R. Lumgair, Michael P. Nicoletti, Richard Shutt
  • Publication number: 20020155216
    Abstract: In one embodiment, a spin coating process comprises: dispensing a solution of a solution solvent and about 3 to about 30 wt % thermoplastic polymer, based upon the total weight of the solution, wherein the solution solvent has a boiling point at atmospheric pressure of about 110° C. to about 250° C., a polarity index of greater than or equal to about 4.0, a pH of about 5.5 to about 9; spinning the substrate; and removing the solution solvent to produce a coated substrate comprising a coating having less than or equal to 10 asperities over the entire surface of the coated substrate.
    Type: Application
    Filed: April 18, 2002
    Publication date: October 24, 2002
    Inventors: John Bradford Reitz, Minquan Cheng, Albert G. Dietz, Thomas P. Feist, Robert R. Gallucci, Thomas B. Gorczyca