Patents by Inventor Jixiang Han

Jixiang Han 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: 10752921
    Abstract: The subject technology generally relates to biosynthesis of styrene. Certain embodiments of the subject technology is based, in part, on the recognition that phenylalanine can be converted to styrene by a two-step pathway of deamination and de-carboxylation, with trans-cinnamic acid (tCA) as the intermediate. Two types of enzymes are directly involved in this process, phenylalanine ammonia lyase (PAL), which converts phenylalanine to tCA, and cinnamic acid decarboxylase, which coverts tCA to styrene. Host cells expressing these two types of enzymes can be cultured in bioreactor to produce styrene from renewable substrates such as glucose.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: August 25, 2020
    Assignee: Phytogene, Inc.
    Inventors: Mohammad Wadud Bhuiya, Hui Chen, Xianpeng Cai, Jixiang Han, Xiaodan Yu
  • Publication number: 20200224232
    Abstract: Disclosed are methods for ergothioneine biosynthesis. More particularly, the present disclosure relates to methods for microbial ergothioneine biosynthesis.
    Type: Application
    Filed: December 13, 2019
    Publication date: July 16, 2020
    Applicant: Conagen Inc.
    Inventors: Jixiang Han, Hui Chen, Oliver Yu
  • Patent number: 10544437
    Abstract: Disclosed are methods for ergothioneine biosynthesis. More particularly, the present disclosure relates to methods for microbial ergothioneine biosynthesis. The present disclosure relates generally to engineered host cells and methods for producing ergothioneine. More particularly, the present disclosure relates to an engineered host cell and methods for microbial ergothioneine biosynthesis using the engineered host cell.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: January 28, 2020
    Assignee: Conagen Inc.
    Inventors: Jixiang Han, Hui Chen, Xiaodan Yu
  • Publication number: 20180002726
    Abstract: The subject technology generally relates to biosynthesis of styrene. Certain embodiments of the subject technology is based, in part, on the recognition that phenylalanine can be converted to styrene by a two-step pathway of deamination and de-carboxylation, with trans-cinnamic acid (tCA) as the intermediate. Two types of enzymes are directly involved in this process, phenylalanine ammonia lyase (PAL), which converts phenylalanine to tCA, and cinnamic acid decarboxylase, which coverts tCA to styrene. Host cells expressing these two types of enzymes can be cultured in bioreactor to produce styrene from renewable substrates such as glucose.
    Type: Application
    Filed: September 15, 2017
    Publication date: January 4, 2018
    Applicant: Phytogene, Inc.
    Inventors: Mohammad Wadud Bhuiya, Hui Chen, Xianpeng Cai, Jixiang Han, Xiaodan Yu
  • Publication number: 20170051325
    Abstract: Disclosed are methods for ergothioneine biosynthesis. More particularly, the present disclosure relates to methods for microbial ergothioneine biosynthesis. The present disclosure relates generally to engineered host cells and methods for producing ergothioneine. More particularly, the present disclosure relates to an engineered host cell and methods for microbial ergothioneine biosynthesis using the engineered host cell.
    Type: Application
    Filed: April 28, 2015
    Publication date: February 23, 2017
    Applicant: Conagen Inc.
    Inventors: Jixiang Han, Hui Chen, Xiaodan Yu
  • Publication number: 20150337336
    Abstract: The subject technology generally relates to biosynthesis of styrene. Certain embodiments of the subject technology is based, in part, on the recognition that phenylalanine can be converted to styrene by a two-step pathway of deamination and decarboxylation, with trans-cinnamic acid (tCA) as the intermediate. Two types of enzymes are directly involved in this process, phenylalanine ammonia lyase (PAL), which converts phenylalanine to tCA, and cinnamic acid decarboxylase, which coverts tCA to styrene. Host cells expressing these two types of enzymes can be cultured in bioreactor to produce styrene from renewable substrates such as glucose.
    Type: Application
    Filed: June 21, 2013
    Publication date: November 26, 2015
    Inventors: Mohammad Wadud Bhuiya, Hui Chen, Xianpeng Cai, Jixiang Han, Xiaodan Yu
  • Patent number: 9181559
    Abstract: Transgenic plants, plant material, plant cells, and genetic constructs for synthesis of biopolymers, for example polyhydroxyalkanoates (“PHA”) are provided. In one embodiment, the transgenic plants synthesize polyhydroxybutyrate (“PHB”). In one embodiment the transgenic plant encodes siRNA for one or more of the genes encoding enzymes for producing PHA. In a more preferred embodiment, the siRNA expression is under the control of an inducible regulatory element. In another embodiment, the transgenic plant contains transgenes that encode expression enzymes that will degrade the polymer. In a preferred embodiment, the expression of these enzymes is under the control of a germination specific, inducible, or minimal promoter. In another embodiment, the transgenic plant contains transgenes encoding enzymes that increase carbon flow for polymer synthesis. In a preferred embodiment, these transgenes encode enzymes that increase carbon flow in the Calvin Cycle.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: November 10, 2015
    Assignee: Metabolix, Inc.
    Inventors: Nii Patterson, Jihong Tang, Jixiang Han, Venkata Tavva, Andrew Hertig, Zhigang Zhang, Thomas Martin Ramseier, Karen Bohmert-Tatarev, Oliver P. Peoples, Kristi D. Snell
  • Publication number: 20120180162
    Abstract: Transgenic plants, plant material, plant cells, and genetic constructs for synthesis of biopolymers, for example polyhydroxyalkanoates (“PHA”) are provided. In one embodiment, the transgenic plants synthesize polyhydroxybutyrate (“PHB”). In one embodiment the transgenic plant encodes siRNA for one or more of the genes encoding enzymes for producing PHA. In a more preferred embodiment, the siRNA expression is under the control of an inducible regulatory element. In another embodiment, the transgenic plant contains transgenes that encode expression enzymes that will degrade the polymer. In a preferred embodiment, the expression of these enzymes is under the control of a germination specific, inducible, or minimal promoter. In another embodiment, the transgenic plant contains transgenes encoding enzymes that increase carbon flow for polymer synthesis. In a preferred embodiment, these transgenes encode enzymes that increase carbon flow in the Calvin Cycle.
    Type: Application
    Filed: September 15, 2010
    Publication date: July 12, 2012
    Applicant: METABOLIX, INC.
    Inventors: Nii Patterson, Jihong Tang, Jixiang Han, Venkata Tavva, Andrew Hertig, Zhigang Zhang, Thomas Martin Ramseier, Karen Bohmert-tatarev, Oliver P. peoples, Kristi D. Snell
  • Publication number: 20030159173
    Abstract: The invention relates to chimerical genes that have (i) a DNA sequence coding for a desired product, and (ii) an elongase promoter. The DNA sequence is functionally linked with the promoter to allow expression of the product under the control of the promoter. The invention further relates to vectors, plant cells, plants and plant parts and microorganisms that contain the chimerical gene and to methods for producing such vectors, plant cells, plants and plant parts and microorganisms. The invention also relates to elongase-encoding sequences from Brassica napus and to transgenic plants and microorganisms expressing said sequences.
    Type: Application
    Filed: April 19, 2002
    Publication date: August 21, 2003
    Inventors: Frank P. Wolter, Jixiang Han, Margrit Frentzen