Patents by Inventor You-lo Hsieh

You-lo Hsieh 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: 11920304
    Abstract: The present invention describes a method for preparing graphene by mixing graphite and carbon nanofibrils. The prepared graphene can be used to form nanopaper. The present invention also provides a method of preparing nanopaper by suspending cellulose nanofibrils and graphene, followed by vacuum filtering of the suspension.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: March 5, 2024
    Assignee: The Regents of the University of California
    Inventors: You-Lo Hsieh, Xuezhu Xu
  • Patent number: 11549854
    Abstract: The present disclosure provides an aerogel comprising conductive polymers and cellulose nanofibrils (CNF). The present disclosure also provides a sensor comprising the aerogels of the present invention.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: January 10, 2023
    Assignee: The Regents of the University of California
    Inventors: You-Lo Hsieh, Jian Zhou
  • Publication number: 20220378713
    Abstract: The present invention provides compositions of soy protein gel fibers, soy protein fiber membranes, and soy protein films. The present invention also provides methods of making the soy protein compositions and also uses of the compositions.
    Type: Application
    Filed: October 1, 2020
    Publication date: December 1, 2022
    Inventors: You-Lo Hsieh, Xingchen Chen
  • Publication number: 20220195148
    Abstract: The present disclosure provides a method for preparing an aerogel or a foam, the method comprising: forming a reaction mixture comprising a cellulose nanofibril gel, a first solvent, and one or more crosslinking agents under conditions sufficient to crosslink the gel; and contacting the crosslinked gel with a second solvent under conditions sufficient to dry the crosslinked gel, thereby forming an aerogel or foam.
    Type: Application
    Filed: December 21, 2021
    Publication date: June 23, 2022
    Inventors: YOU-LO HSIEH, FENG JIANG
  • Patent number: 11248107
    Abstract: The present disclosure provides a method for preparing an aerogel or a foam, the method comprising: forming a reaction mixture comprising a cellulose nanofibril gel, a first solvent, and one or more crosslinking agents under conditions sufficient to crosslink the gel; and contacting the crosslinked gel with a second solvent under conditions sufficient to dry the crosslinked gel, thereby forming an aerogel or foam.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: February 15, 2022
    Assignee: The Regents of the University of California
    Inventors: You-Lo Hsieh, Feng Jiang
  • Publication number: 20210381167
    Abstract: The present invention describes a method for preparing graphene by mixing graphite and carbon nanofibrils. The prepared graphene can be used to form nanopaper. The present invention also provides a method of preparing nanopaper by suspending cellulose nanofibrils and graphene, followed by vacuum filtering of the suspension.
    Type: Application
    Filed: October 28, 2019
    Publication date: December 9, 2021
    Inventors: You-Lo HSIEH, Xuezhu XU
  • Publication number: 20210156051
    Abstract: The present disclosure provides a coaxial fiber comprising a cellulose fiber exterior, and a hollow interior, wherein the aerogel occupies the hollow interior of the cellulose fiber. The present disclosure also provides a method of making the coaxial fiber, and a method of maintain a temperature differential in two zones using the coaxial fibers described herein.
    Type: Application
    Filed: November 19, 2020
    Publication date: May 27, 2021
    Inventors: You-Lo HSIEH, Jian ZHOU
  • Publication number: 20200363273
    Abstract: The present disclosure provides an aerogel comprising conductive polymers and cellulose nanofibrils (CNF). The present disclosure also provides a sensor comprising the aerogels of the present invention.
    Type: Application
    Filed: May 14, 2020
    Publication date: November 19, 2020
    Inventors: You-Lo HSIEH, Jian ZHOU
  • Publication number: 20190309144
    Abstract: The present disclosure provides a method for preparing an aerogel or a foam, the method comprising: forming a reaction mixture comprising a cellulose nanofibril gel, a first solvent, and one or more crosslinking agents under conditions sufficient to crosslink the gel; and contacting the crosslinked gel with a second solvent under conditions sufficient to dry the crosslinked gel, thereby forming an aerogel or foam.
    Type: Application
    Filed: March 22, 2019
    Publication date: October 10, 2019
    Inventors: YOU-LO HSIEH, FENG JIANG
  • Publication number: 20040241436
    Abstract: The present invention provides nano-porous fibers and protein membrane compositions. In certain embodiments, continuous fiber compositions are provided having nanometer sized diameters and surface pores. In another embodiment, a protein membrane composition is provided comprising a protein; and a polymer, wherein the protein and the polymer are electrospun to form a protein membrane composition. In certain instance, the protein is covalently bound to the fiber.
    Type: Application
    Filed: January 20, 2004
    Publication date: December 2, 2004
    Applicant: The Regents of the University of California
    Inventors: You-Lo Hsieh, Jiangbing Xie, Yuhong Wang, Hong Chen, Lei Li, Lifeng Zhang, Corine Cecile
  • Publication number: 20030119172
    Abstract: Textile fibers are treated with enzymes in the absence of surfactants, with the effect of increasing the wettability and absorbency of the fibers. The enzymes are pectinases, cellulases, proteases, lipases or combinations thereof. The wetting properties of cotton fibers are found to be most substantially improved by treatment with a mixture of cellulase and pectinase. The effects of five hydrolyzing enzymes on improving the hydrophilicity of several polyester fabrics have been studied. Four out of the five lipases studied improve the water wetting and absorbent properties of the regular polyester fabrics more than alkaline hydrolysis under optimal conditions (3N NaOH at 55° C. for 2 hours). Compared to aqueous hydrolysis, the enzyme reactions have shown to be effective under more moderate conditions, including a relatively low concentration (0.01 g/L), a shorter reaction time (10 minutes), at an ambient temperature (25° C.).
    Type: Application
    Filed: August 8, 2002
    Publication date: June 26, 2003
    Applicant: The Regents of the University of California
    Inventors: You-Lo Hsieh, Mary Michelle Hartzell, Matthew G. Boston, Kathleen A. Clarkson, Katherine D. Collier, Thomas P. Graycar, Edmund A. Larenas
  • Publication number: 20020115193
    Abstract: Textile fibers are treated with enzymes in the absence of surfactants, with the effect of increasing the wettability and absorbency of the fibers. The enzymes are pectinases, cellulases, proteases, lipases or combinations thereof. The wetting properties of cotton fibers are found to be most substantially improved by treatment with a mixture of cellulase and pectinase. The effects of five hydrolyzing enzymes on improving the hydrophilicity of several polyester fabrics have been studied. Four out of the five lipases studied improve the water wetting and absorbent properties of the regular polyester fabrics more than alkaline hydrolysis under optimal conditions (3N NaOH at 55° C. for 2 hours). Compared to aqueous hydrolysis, the enzyme reactions have shown to be effective under more moderate conditions, including a relatively low concentration (0.01 g/L), a shorter reaction time (10 minutes), at an ambient temperature (25° C.).
    Type: Application
    Filed: December 27, 1999
    Publication date: August 22, 2002
    Inventors: YOU-LO HSIEH, MARY MICHELLE HARTZELL, MATTHEW G. BOSTON, KATHLEEN A. CLARKSON, KATHERINE D. COLLIER, THOMAS P. GRAYCAR, EDMUND A. LARENAS
  • Patent number: 6436696
    Abstract: Textile fibers are treated with enzymes in the absence of surfactants, with the effect of increasing the wettability and absorbency of the fibers. The enzymes are pectinases, cellulases, proteases, lipases or combinations thereof. The wetting properties of cotton fibers are found to be most substantially improved by treatment with a mixture of cellulase and pectinase. The effects of five hydrolyzing enzymes on improving the hydrophilicity of several polyester fabrics have been studied. Four out of the five lipases studied improve the water wetting and absorbent properties of the regular polyester fabrics more than alkaline hydrolysis under optimal conditions (3N NaOH at 55° C. for 2 hours). Compared to aqueous hydrolysis, the enzyme reactions have shown to be effective under more moderate conditions, including a relatively low concentration (0.01 g/L), a shorter reaction time (10 minutes), at an ambient temperature (25° C.).
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: August 20, 2002
    Assignees: The Regents of the University of California, Genencor International, Inc.
    Inventors: You-lo Hsieh, Mary Michelle Hartzell, Matthew G. Boston, Kathleen A. Clarkson, Katherine D. Collier, Thomas P. Graycar, Edmund A. Larenas
  • Patent number: 6066494
    Abstract: Textile fibers are treated with enzymes in the absence of surfactants, with the effect of increasing the wettability and absorbency of the fibers. The enzymes are pectinases, cellulases, proteases, lipases or combinations thereof. The wetting properties of cotton fibers are found to be most substantially improved by treatment with a mixture of cellulase and pectinase. The effects of five hydrolyzing enzymes on improving the hydrophilicity of several polyester fabrics have been studied. Four out of the five lipases studied improve the water wetting and absorbent properties of the regular polyester fabrics more than alkaline hydrolysis under optimal conditions (3N NaOH at 55.degree. C. for 2 hours). Compared to aqueous hydrolysis, the enzyme reactions have shown to be effective under more moderate conditions, including a relatively low concentration (0.01 g/L), a shorter reaction time (10 minutes), at an ambient temperature (25.degree. C.).
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: May 23, 2000
    Assignee: The Regents of the University of California
    Inventors: You-lo Hsieh, Mary Michelle Hartzell, Matthew G. Boston, Kathleen A. Clarkson, Katherine D. Collier, Thomas P. Graycar, Edmund A. Larenas