Patents by Inventor Qiong Cheng

Qiong 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).

  • POLYPEPTIDES CAPABLE OF PRODUCING GLUCANS HAVING ALPHA (1-->2) LINKAGES AND USE OF THE SAME
    Publication number: 20210206819
    Abstract: Disclosed herein are proteins capable of forming glucans having alpha-1,2 linkages/branches, reactions and methods for producing such glucan, compositions comprising such glucan, and various applications thereof.
    Type: Application
    Filed: October 30, 2020
    Publication date: July 8, 2021
    Inventors: QIONG CHENG, ROBERT DICOSIMO, JAHNAVI CHANDRA PRASAD, ZHENGHONG ZHANG
  • GLUCAN FIBER COMPOSITIONS FOR USE IN LAUNDRY CARE AND FABRIC CARE
    Publication number: 20210171868
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Application
    Filed: October 29, 2020
    Publication date: June 10, 2021
    Inventors: Robert DiCosimo, Qiong Cheng, Rakesh Nambiar, Jayme L. Paullin, Mark Payne, Zheng You
  • GLUCAN FIBER COMPOSITIONS FOR USE IN LAUNDRY CARE AND FABRIC CARE
    Publication number: 20210171867
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Application
    Filed: November 18, 2020
    Publication date: June 10, 2021
    Inventors: Robert DiCosimo, Qiong Cheng, Rakesh Nambiar, Jayme L. Paullin, Mark S. Payne, Jahnavi Chandra Prasad, Zheng You
  • Engineered glucosyltransferases
    Patent number: 11028373
    Abstract: Disclosed herein are glucosyltransferases with modified amino acid sequences. Such engineered enzymes exhibit improved alpha-glucan product yields and/or lower leucrose yields, for example. Further disclosed are reactions and methods in which engineered glucosyltransferases are used to produce alpha-glucan.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: June 8, 2021
    Assignee: NUTRITION & BIOSCIENCES USA 4, INC.
    Inventors: Yougen Li, Mark S. Payne, Jared B. Parker, Slavko Kralj, Veli Alkan, Richard R. Bott, Robert Dicosimo, Qiong Cheng, Ellen D. Semke, Susan Marie Hennessey
  • Enzymatic synthesis of soluble glucan fiber
    Patent number: 10907185
    Abstract: An enzymatically produced soluble ?-glucan fiber composition is provided suitable for use as a digestion resistant fiber in food and feed applications. The soluble ?-glucan fiber composition can be blended with one or more additional food ingredients to produce fiber-containing compositions. Methods for the production and use of compositions comprising the soluble ?-glucan fiber are also provided.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: February 2, 2021
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Qiong Cheng, Robert Dicosimo, Arthur Ouwehand, Zheng You, Jian Ping Lai, Zheyong Yu, Zhenghong Zhang
  • Glucan fiber compositions for use in laundry care and fabric care
    Patent number: 10876074
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: December 29, 2020
    Assignee: DuPont Industrial Biosciences USA, LLC
    Inventors: Robert DiCosimo, Qiong Cheng, Rakesh Nambiar, Jayme L. Paullin, Mark S Payne, Jahnavi Chandra Prasad, Zheng You
  • Engineered glucosyltransferases
    Patent number: 10865393
    Abstract: Disclosed herein are glucosyltransferases with modified amino acid sequences. Such engineered enzymes exhibit improved alpha-glucan product yields and/or lower leucrose yields, for example. Further disclosed are reactions and methods in which engineered glucosyltransferases are used to produce alpha-glucan.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: December 15, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Yougen Li, Ellen D. Semke, Qiong Cheng, Jian Ping Lai
  • Glucan fiber compositions for use in laundry care and fabric care
    Patent number: 10844324
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: November 24, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Robert DiCosimo, Qiong Cheng, Rakesh Nambiar, Jayme L Paullin, Mark S Payne, Jahnavi Chandra Prasad, Zheng You
  • Polypeptides capable of producing glucans having alpha-1,2 branches and use of the same
    Patent number: 10822383
    Abstract: Disclosed herein are proteins capable of forming glucans having alpha-1,2 linkages/branches, reactions and methods for producing such glucan, compositions comprising such glucan, and various applications thereof.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: November 3, 2020
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Qiong Cheng, Robert DiCosimo, Jahnavi Chandra Prasad, Zhenghong Zhang
  • Glucan fiber compositions for use in laundry care and fabric care
    Patent number: 10822574
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: November 3, 2020
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Robert DiCosimo, Qiong Cheng, Rakesh Nambiar, Jayme L. Paullin, Mark S. Payne, Zheng You
  • ENZYMATIC SYNTHESIS OF SOLUBLE GLUCAN FIBER
    Publication number: 20190389978
    Abstract: An enzymatically produced soluble ?-glucan fiber composition is provided suitable for use as a digestion resistant fiber in food and feed applications. The soluble ?-glucan fiber composition can be blended with one or more additional food ingredients to produce fiber-containing compositions. Methods for the production and use of compositions comprising the soluble ?-glucan fiber are also provided.
    Type: Application
    Filed: June 25, 2019
    Publication date: December 26, 2019
    Inventors: Qiong Cheng, Robert DiCosimo, Arthur Ouwehand, Zheng You, Mark S. Payne, Jian Ping Lai, Kristin Ruebling-Jass, Steven Cary Rothman
  • GLUCAN FIBER COMPOSITIONS FOR USE IN LAUNDRY CARE AND FABRIC CARE
    Publication number: 20190322963
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Application
    Filed: May 20, 2019
    Publication date: October 24, 2019
    Inventors: ROBERT DICOSIMO, Qiong Cheng, Rakesh Nambiar, Jayme L. Paullin, Mark S. Payne, Jahnavi Chandra Prasad, Zheng You
  • ENGINEERED GLUCOSYLTRANSFERASES
    Publication number: 20190292528
    Abstract: Disclosed herein are glucosyltransferases with modified amino acid sequences. Such engineered enzymes exhibit improved alpha-glucan product yields and/or lower leucrose yields, for example. Further disclosed are reactions and methods in which engineered glucosyltransferases are used to produce alpha-glucan.
    Type: Application
    Filed: April 11, 2019
    Publication date: September 26, 2019
    Inventors: Yougen Li, Mark S. Payne, Jared B. Parker, Slavko Kralj, Veli Alkan, Richard R. Bott, Robert Dicosimo, Qiong Cheng, Ellen D. Semke, Susan Marie Hennessey
  • Enzymatic synthesis of soluble glucan fiber
    Patent number: 10351633
    Abstract: An enzymatically produced soluble ?-glucan fiber composition is provided suitable for use as a digestion resistant fiber in food and feed applications. The soluble ?-glucan fiber composition can be blended with one or more additional food ingredients to produce fiber-containing compositions. Methods for the production and use of compositions comprising the soluble ?-glucan fiber are also provided.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: July 16, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Qiong Cheng, Robert Dicosimo, Arthur Ouwehand, Zheng You, Mark S. Payne, Jian Ping Lai, Kristin Ruebling-Jass, Steven Cary Rothman
  • Engineered glucosyltransferases
    Patent number: 10301604
    Abstract: Disclosed herein are glucosyltransferases with modified amino acid sequences. Such engineered enzymes exhibit improved alpha-glucan product yields and/or lower leucrose yields, for example. Further disclosed are reactions and methods in which engineered glucosyltransferases are used to produce alpha-glucan.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: May 28, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Yougen Li, Mark S. Payne, Jared B. Parker, Slavko Kralj, Veli Alkan, Richard R. Bott, Robert Dicosimo, Qiong Cheng, Ellen D. Semke, Susan Marie Hennessey
  • ENGINEERED GLUCOSYLTRANSFERASES
    Publication number: 20190078063
    Abstract: Disclosed herein are glucosyltransferases with modified amino acid sequences. Such engineered enzymes exhibit improved alpha-glucan product yields and/or lower leucrose yields, for example. Further disclosed are reactions and methods in which engineered glucosyltransferases are used to produce alpha-glucan.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Inventors: YOUGEN LI, Ellen D. Semke, Qiong Cheng, Jian Ping Lai
  • ENZYMATICALLY POLYMERIZED GELLING DEXTRANS
    Publication number: 20180355072
    Abstract: Compositions are disclosed herein comprising dextran that comprises (i) 87-93 wt % glucose linked at positions 1 and 6; (ii) 0.1-1.2 wt % glucose linked at positions 1 and 3; (iii) 0.1-0.7 wt % glucose linked at positions 1 and 4; (iv) 7.7-8.6 wt % glucose linked at positions 1, 3 and 6; and (v) about 0.4-1.7 wt % glucose linked at (a) positions 1, 2 and 6, or (b) positions 1, 4 and 6. Aqueous forms of this composition have enhanced viscosity profiles. Further disclosed are methods of using compositions comprising dextran, such as increasing the viscosity of an aqueous composition. Enzymatic reactions for producing dextran are also disclosed.
    Type: Application
    Filed: August 24, 2018
    Publication date: December 13, 2018
    Inventors: RAKESH NAMBIAR, RONG GUAN, QIONG CHENG, ROBERT DICOSIMO, JAYME L. PAULLIN, YUANFENG LIANG, CHARLES R. POWLEY, YEFIM BRUN
  • GLUCAN FIBER COMPOSITIONS FOR USE IN LAUNDRY CARE AND FABRIC CARE
    Publication number: 20180312781
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Application
    Filed: November 7, 2016
    Publication date: November 1, 2018
    Inventors: Robert DiCosimo, Qiong Cheng, Rakesh Nambiar, Jayme L. Paullin, Mark S. Payne, Jahnavi Chandra Prasad, Zheng You
  • GLUCAN FIBER COMPOSITIONS FOR USE IN LAUNDRY CARE AND FABRIC CARE
    Publication number: 20180291311
    Abstract: An enzymatically produced ?-glucan oligomer/polymer compositions is provided. The enzymatically produced ?-glucan oligomer/polymers can be derivatized into ?-glucan ether compounds. The ?-glucan oligomers/polymers and the corresponding ?-glucan ethers are cellulose and/or protease resistant, making them suitable for use in fabric care and laundry care applications. Methods for the production and use of the present compositions are also provided.
    Type: Application
    Filed: November 7, 2016
    Publication date: October 11, 2018
    Inventors: Robert DiCosimo, Qiong Cheng, Rakesh Nambiar, Jayme L. Paullin, Mark S. Payne, Jahnavi Chandra Prasad, Zheng You
  • POLYPEPTIDES CAPABLE OF PRODUCING GLUCANS HAVING ALPHA-1,2 BRANCHES AND USE OF THE SAME
    Publication number: 20180282385
    Abstract: Disclosed herein are proteins capable of forming glucans having alpha-1,2 linkages/branches, reactions and methods for producing such glucan, compositions comprising such glucan, and various applications thereof.
    Type: Application
    Filed: November 22, 2016
    Publication date: October 4, 2018
    Inventors: Qiong Cheng, Robert DiCosimo, Jahnavi Chandra Prasad, Zhenghong Zhang