Patents by Inventor Rongsheng Ruan

Rongsheng Ruan 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: 11890386
    Abstract: Disinfecting particulate material includes combining the particulate material with a photocatalyst to yield a mixture, irradiating the mixture for a length of time with pulses from a light source having broadband emission spectrum between 190 nm-1100 nm to yield an irradiated mixture, and separating the photocatalyst from the disinfected mixture to yield the disinfected particulate matter. Irradiating the mixture inactivates microorganisms in the mixture to yield a disinfected mixture. A system for disinfecting particulate material includes a pulsed light source having a broadband emission spectrum in a range between about 190 nm and about 1100 nm, a chamber defining a cavity optically coupled to the pulsed light source, a humidifier, a fan, and one or more sensors. The chamber includes a conveyor configured to accept the particulate material and arranged such that the pulses emitted by the pulsed light source irradiate the particulate material on the conveyor.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: February 6, 2024
    Assignee: Regents of the University of Minnesota
    Inventors: Rongsheng Ruan, Yanling Cheng, Nan Zhou, Dongjie Chen, Peng Peng, Yunpu Wang, Renchuan Zhang, Charles Schiappacasse, Ling Chen
  • Publication number: 20230227728
    Abstract: A method of producing a hydrocarbon fuel from a soapstock includes supplying a pyrolysis reactor that includes a microwave absorbent bed susceptible to microwave irradiation, applying microwave energy to the pyrolysis reactor, wherein the microwave absorbent bed converts the microwave energy to thermal energy, supplying the soapstock to the microwave absorbent bed, and condensing a vapor generated by pyrolysis of the soapstock sufficient to collect the hydrocarbon fuel.
    Type: Application
    Filed: February 3, 2023
    Publication date: July 20, 2023
    Inventors: Rongsheng Ruan, Erik Anderson
  • Patent number: 11591523
    Abstract: A distillation apparatus for use in microwave-assisted pyrolysis includes a microwave, a pyrolysis reactor, a microwave-absorbent bed, and a condenser. The pyrolysis reactor is located within the microwave and configured to receive a liquid input stream and to output a vapor. The microwave-absorbent bed is located within the pyrolysis reactor that converts microwave energy provided by the microwave to thermal energy to initiate pyrolysis within the pyrolysis reactor, wherein the pyrolysis reactor provides a vapor output. The condenser is configured to receive the vapor output of the pyrolysis reactor and to cool and condense the vapor into a recoverable product.
    Type: Grant
    Filed: October 11, 2021
    Date of Patent: February 28, 2023
    Assignee: Resynergi, Inc.
    Inventors: Rongsheng Ruan, Erik Anderson
  • Publication number: 20220025274
    Abstract: A distillation apparatus for use in microwave-assisted pyrolysis includes a microwave, a pyrolysis reactor, a microwave-absorbent bed, and a condenser. The pyrolysis reactor is located within the microwave and configured to receive a liquid input stream and to output a vapor. The microwave-absorbent bed is located within the pyrolysis reactor that converts microwave energy provided by the microwave to thermal energy to initiate pyrolysis within the pyrolysis reactor, wherein the pyrolysis reactor provides a vapor output. The condenser is configured to receive the vapor output of the pyrolysis reactor and to cool and condense the vapor into a recoverable product.
    Type: Application
    Filed: October 11, 2021
    Publication date: January 27, 2022
    Inventors: Rongsheng Ruan, Erik Anderson
  • Patent number: 11142700
    Abstract: A distillation apparatus for use in microwave-assisted pyrolysis includes a microwave, a pyrolysis reactor, a microwave-absorbent bed, and a condenser. The pyrolysis reactor is located within the microwave and configured to receive a liquid input stream and to output a vapor. The microwave-absorbent bed is located within the pyrolysis reactor that converts microwave energy provided by the microwave to thermal energy to initiate pyrolysis within the pyrolysis reactor, wherein the pyrolysis reactor provides a vapor output. The condenser is configured to receive the vapor output of the pyrolysis reactor and to cool and condense the vapor into a recoverable product.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: October 12, 2021
    Assignee: Resynergi, Inc.
    Inventors: Rongsheng Ruan, Erik Anderson
  • Publication number: 20200289681
    Abstract: Disinfecting particulate material includes combining the particulate material with a photocatalyst to yield a mixture, irradiating the mixture for a length of time with pulses from a light source having broadband emission spectrum between 190 nm-1100 nm to yield an irradiated mixture, and separating the photocatalyst from the disinfected mixture to yield the disinfected particulate matter. Irradiating the mixture inactivates microorganisms in the mixture to yield a disinfected mixture. A system for disinfecting particulate material includes a pulsed light source having a broadband emission spectrum in a range between about 190 nm and about 1100 nm, a chamber defining a cavity optically coupled to the pulsed light source, a humidifier, a fan, and one or more sensors. The chamber includes a conveyor configured to accept the particulate material and arranged such that the pulses emitted by the pulsed light source irradiate the particulate material on the conveyor.
    Type: Application
    Filed: March 13, 2020
    Publication date: September 17, 2020
    Inventors: Rongsheng Ruan, Yanling Cheng, Nan Zhou, Dongjie Chen, Peng Peng, Yunpu Wang, Renchuan Zhang, Charles Schiappacasse, Ling Chen
  • Publication number: 20190322940
    Abstract: A distillation apparatus for use in microwave-assisted pyrolysis includes a microwave, a pyrolysis reactor, a microwave-absorbent bed, and a condenser. The pyrolysis reactor is located within the microwave and configured to receive a liquid input stream and to output a vapor. The microwave-absorbent bed is located within the pyrolysis reactor that converts microwave energy provided by the microwave to thermal energy to initiate pyrolysis within the pyrolysis reactor, wherein the pyrolysis reactor provides a vapor output. The condenser is configured to receive the vapor output of the pyrolysis reactor and to cool and condense the vapor into a recoverable product.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 24, 2019
    Inventors: Rongsheng Ruan, Erik Anderson
  • Patent number: 9745530
    Abstract: A method for production of a biodiesel is described herein. The method for production of a biodiesel comprises (a) separating solids from a waste oil composition to provide a clarified oil composition; (b) acidifying the clarified oil composition to produce an acidified oil composition including free fatty acids derived from the waste oil; (c) converting at least a portion of the free fatty acids in the acidified oil composition to glycerides to provide a glyceride composition; and (d) reacting at least a portion of the glycerides in the glyceride composition with methanol to form fatty acid methyl ester to provide a biodiesel composition.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: August 29, 2017
    Assignees: Regents of the University of Minnesota, China Agricultural University
    Inventors: Rongsheng Ruan, Min Min Addy, Yong Nie, Erik Andrew Anderson, Chonghao Bi, Dong Li, Ling Chen
  • Publication number: 20160230106
    Abstract: A method for production of a biodiesel is described herein. The method for production of a biodiesel comprises (a) separating solids from a waste oil composition to provide a clarified oil composition; (b) acidifying the clarified oil composition to produce an acidified oil composition including free fatty acids derived from the waste oil; (c) converting at least a portion of the free fatty acids in the acidified oil composition to glycerides to provide a glyceride composition; and (d) reacting at least a portion of the glycerides in the glyceride composition with methanol to form fatty acid methyl ester to provide a biodiesel composition.
    Type: Application
    Filed: February 9, 2016
    Publication date: August 11, 2016
    Inventors: Rongsheng Ruan, Min Min Addy, Yong Nie, Erik Andrew Anderson, Chonghao Bi, Dong Li, Ling Chen
  • Publication number: 20140105807
    Abstract: The disclosure herein describes a method for producing ammonia by introducing N2, CO and water into a non-thermal plasma in the presence of a catalyst, the catalyst being effective to promote the disassociation of N2, CO and water to form reactants that in turn react to produce NH3 and CH4. This disclosure also describes producing a reactive hydrogen ion or free radical by the method comprising passing water through a non-thermal plasma in the presence of a catalyst, the catalyst being effective to promote the dissociation of water.
    Type: Application
    Filed: December 26, 2013
    Publication date: April 17, 2014
    Inventors: Rongsheng Ruan, Shaobo Deng, Zhiping Le, Yanling Cheng, Xiangyang Lin, Ling Chen
  • Patent number: 8641872
    Abstract: The disclosure herein describes a method for producing ammonia by introducing N2, CO and water into a non-thermal plasma in the presence of a catalyst, the catalyst being effective to promote the disassociation of N2, CO and water to form reactants that in turn react to produce NH3 and CH4. This disclosure also describes producing a reactive hydrogen ion or free radical by the method comprising passing water through a non-thermal plasma in the presence of a catalyst, the catalyst being effective to promote the dissociation of water.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: February 4, 2014
    Assignee: Regents of the University of Minnesota
    Inventors: Rongsheng Ruan, Shaobo Deng, Zhiping Le, Yanling Cheng, Xiangyang Lin, Ling Chen
  • Publication number: 20110233047
    Abstract: The disclosure herein describes a method for producing ammonia by introducing N2, CO and water into a non-thermal plasma in the presence of a catalyst, the catalyst being effective to promote the disassociation of N2, CO and water to form reactants that in turn react to produce NH3 and CH4. This disclosure also describes producing a reactive hydrogen ion or free radical by the method comprising passing water through a non-thermal plasma in the presence of a catalyst, the catalyst being effective to promote the dissociation of water.
    Type: Application
    Filed: September 16, 2009
    Publication date: September 29, 2011
    Inventors: Rongsheng Ruan, Shaoboo Deng, Le Zhiping, Yanling Cheng, Xiangyang Lin, Ling Chen
  • Patent number: 7931811
    Abstract: A fluid treatment device and method are provided for generating an electric field across a gap between first and second electrode and for concentrating the electric field within a fluid treatment chamber located in the gap.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: April 26, 2011
    Assignee: Regents of The University of Minnesota
    Inventors: Rongsheng Ruan, Shaobo Deng, Ling Chen, Xingyang Lin, Lloyd Metzger
  • Publication number: 20080099406
    Abstract: A fluid treatment device and method are provided for generating an electric field across a gap between first and second electrode and for concentrating the electric field within a fluid treatment chamber located in the gap.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 1, 2008
    Applicant: Regents of The University of Minnesota
    Inventors: Rongsheng Ruan, Shaobo Deng, Ling Chen, Xiangyang Lin, Lloyd Metzger
  • Publication number: 20060204631
    Abstract: The present invention comprises an improved method for refining cellulose that produces a highly refined cellulosic material. The method comprises soaking raw material in a mild NaOH using reduced temperatures and pressures, and refining the material with a plate refiner so that a waste water stream is reduced in volume and has a pH within a range of 8 to 9. The present invention also comprises a HRC gel having a lignin concentration of at least about one (1)% by weight, and a water retention capacity of about 25 to at least about 56 g H2O/g dry HRC.
    Type: Application
    Filed: May 16, 2006
    Publication date: September 14, 2006
    Applicants: Regents of the University of Minnesota, Agricultural Utilization Research Institute
    Inventors: Brock Lundberg, Lin Gu, Rongsheng Ruan, Ling Chen, Paul Addis, Jack Johnson