Patents by Inventor Wenqiang Lu

Wenqiang Lu 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).

  • METHOD OF IMPROVING ACID DECARBOXYLASE ACTIVITY IN VITRO UNDER ALKALINE PH
    Publication number: 20230295602
    Abstract: This invention provides acid decarboxylase-prion subunit fusion polypeptides, nucleic acid sequences, expression vectors, and host cells expression such fusion polypeptides to produce various amino acids and derivatives of the amino acids such as polyamines.
    Type: Application
    Filed: April 13, 2023
    Publication date: September 21, 2023
    Inventors: Howard Chou, Ling Chen, Wenqiang Lu, Xiucai Liu
  • Modifications to lysine decarboxylase enzymes
    Patent number: 11512302
    Abstract: The invention provides CadA polypeptides with mutations that increase activity in alkaline pH compared to the wild-type lysine decarboxylase. The invention also provides methods of generating such mutant polypeptides, microorganisms genetically modified to overexpress the mutant polypeptides, and methods of generating such microorganism.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: November 29, 2022
    Assignees: CATHAY BIOTECH INC., CIBT AMERICA INC.
    Inventors: Howard Chou, Wenqiang Lu, Ling Chen, Lijun Yu, Xiucai Liu
  • Lysine decarboxylases having modifications at titratable amino acids
    Patent number: 11078473
    Abstract: The invention provides CadA polypeptides with mutations that increase activity in alkaline pH compared to the wild-type lysine decarboxylase. The invention also provides methods of generating such mutant polypeptides, microorganisms genetically modified to overexpress the mutant polypeptides, and methods of generating such microorganisms.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: August 3, 2021
    Assignees: CATHAY BIOTECH INC., CIBT AMERICA INC.
    Inventors: Howard Chou, Ling Chen, Wenqiang Lu, Xiucai Liu
  • Modified lysine decarboxylase enzymes
    Patent number: 11041177
    Abstract: The invention provides CadA polypeptides with mutations that increase activity in alkaline pH compared to the wild-type lysine decarboxylase. The invention also provides methods of generating such mutant polypeptides, microorganisms genetically modified to overexpress the mutant polypeptides, and methods of generating such microorganism.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: June 22, 2021
    Assignees: CATHAY BIOTECH INC., CIBT AMERICA INC.
    Inventors: Howard Chou, Wenqiang Lu, Ling Chen, Xiucai Liu
  • MODIFICATIONS TO LYSINE DECARBOXYLASE ENZYMES
    Publication number: 20210155962
    Abstract: The invention provides CadA polypeptides with mutations that increase activity in alkaline pH compared to the wild-type lysine decarboxylase. The invention also provides methods of generating such mutant polypeptides, microorganisms genetically modified to overexpress the mutant polypeptides, and methods of generating such microorganism.
    Type: Application
    Filed: May 16, 2017
    Publication date: May 27, 2021
    Inventors: Howard Chou, Wenqiang Lu, Ling Chen, Lijun Yu, Xiucai Liu
  • MODIFIED LYSINE DECARBOXYLASE ENZYMES
    Publication number: 20200231999
    Abstract: The invention provides CadA polypeptides with mutations that increase activity in alkaline pH compared to the wild-type lysine decarboxylase. The invention also provides methods of generating such mutant polypeptides, microorganisms genetically modified to overexpress the mutant polypeptides, and methods of generating such microorganism.
    Type: Application
    Filed: December 30, 2016
    Publication date: July 23, 2020
    Applicants: CATHAY R&D CENTER CO., Ltd., CIBT AMERICA INC.
    Inventors: Howard CHOU, Wenqiang LU, Ling CHEN, Xiucai LIU
  • Lysine Decarboxylases having modifications At Titratable Amino Acids
    Publication number: 20190330614
    Abstract: The invention provides CadA polypeptides with mutations that increase activity in alkaline pH compared to the wild-type lysine decarboxylase. The invention also provides methods of generating such mutant polypeptides, microorganisms genetically modified to overexpress the mutant polypeptides, and methods of generating such microorganisms.
    Type: Application
    Filed: December 30, 2016
    Publication date: October 31, 2019
    Applicants: CATHAY R&D CENTER CO., LTD., CIBT AMERICA INC.
    Inventors: Howard CHOU, Ling CHEN, Wenqiang LU, Xiucai LIU
  • CONTROL OF PROTEIN TO PROTEIN INTERACTIONS OF ACID DECARBOXYLASE
    Publication number: 20190330613
    Abstract: This invention provides acid decarboxylase-prion subunit fusion polypeptides, nucleic acid sequences, expression vectors, and host cells expression such fusion polypeptides to produce various amino acids and derivatives of the amino acids such as polyamines.
    Type: Application
    Filed: November 24, 2016
    Publication date: October 31, 2019
    Inventors: Howard Chou, Ling Chen, Wenqiang Lu, Xiucai Liu
  • Magnetic recording medium and production process thereof
    Patent number: 6680112
    Abstract: A process for producing a magnetic recording medium, which comprises the steps of forming a non-magnetic undercoat film and a magnetic film on a non-magnetic substrate; forming a carbonaceous protective film thereon through plasma CVD to produce a disk D; etching the surface of a carbonaceous protective film in an etching apparatus 2 by use of plasma generated from an etching gas; and forming a lubricating film on the carbonaceous protective film surface.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: January 20, 2004
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Mikio Suzuki, Kimie Takagi, Wenqiang Lu, Hiroshi Daio