Patents by Inventor Lawrence Chew

Lawrence Chew 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: 9611499
    Abstract: The present invention relates to the field of recombinant protein production in bacterial hosts. It further relates to extraction of soluble, active recombinant protein from an insoluble fraction without the use of denaturation and without the need for a refolding step. In particular, the present invention relates to a production process for obtaining high levels a soluble recombinant Type 1 interferon protein from a bacterial host.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: April 4, 2017
    Assignee: PFENEX INC.
    Inventors: Jeffrey Allen, Ping-Hua Feng, Anant Patkar, Keith L. Haney, Lawrence Chew, Lei Lei Phokham Sengchanthalangsy
  • Publication number: 20160032345
    Abstract: The present invention relates to the field of recombinant protein production in bacterial hosts. It further relates to extraction of soluble, active recombinant protein from an insoluble fraction without the use of denaturation and without the need for a refolding step. In particular, the present invention relates to a production process for obtaining high levels a soluble recombinant Type 1 interferon protein from a bacterial host.
    Type: Application
    Filed: October 15, 2015
    Publication date: February 4, 2016
    Inventors: Jeffrey Allen, Ping-Hua Feng, Anant Patkar, Keith L. Haney, Lawrence Chew, Lei Lei Phokham Sengchanthalangsy
  • Publication number: 20150361405
    Abstract: The present invention relates to the field of recombinant toxin protein production in bacterial hosts. In particular, the present invention relates to production processes for obtaining high levels of a recombinant CRM197, Diphtheria Toxin, Pertussis Toxin, Tetanus Toxoid Fragment C, Cholera Toxin B, Cholera holotoxin, and Pseudomonas Exotoxin A, from a bacterial host.
    Type: Application
    Filed: November 3, 2014
    Publication date: December 17, 2015
    Inventors: Diane M. Retallack, Lawrence Chew
  • Patent number: 9187543
    Abstract: The present invention relates to the field of recombinant protein production in bacterial hosts. It further relates to extraction of soluble, active recombinant protein from an insoluble fraction without the use of denaturation and without the need for a refolding step. In particular, the present invention relates to a production process for obtaining high levels a soluble recombinant Type 1 interferon protein from a bacterial host.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: November 17, 2015
    Assignee: PFENEX INC.
    Inventors: Jeffrey Allen, Ping-Hua Feng, Anant Patkar, Keith L. Haney, Lawrence Chew, Lei Lei Phokham Sengchanthalangsy
  • Patent number: 8906636
    Abstract: The present invention relates to the field of recombinant toxin protein production in bacterial hosts. In particular, the present invention relates to production processes for obtaining high levels of a recombinant CRM197, Diphtheria Toxin, Pertussis Toxin, Tetanus Toxoid Fragment C, Cholera Toxin B, Cholera holotoxin, and Pseudomonas Exotoxin A, from a bacterial host.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: December 9, 2014
    Assignee: Pfenex Inc.
    Inventors: Diane M. Retallack, Lawrence Chew
  • Publication number: 20140051093
    Abstract: The present invention relates to the field of recombinant toxin protein production in bacterial hosts. In particular, the present invention relates to production processes for obtaining high levels of a recombinant CRM197, Diphtheria Toxin, Pertussis Toxin, Tetanus Toxoid Fragment C, Cholera Toxin B, Cholera holotoxin, and Pseudomonas Exotoxin A, from a bacterial host.
    Type: Application
    Filed: July 26, 2013
    Publication date: February 20, 2014
    Applicant: Pfenex Inc.
    Inventors: Diane M. Retallack, Lawrence Chew
  • Patent number: 8530171
    Abstract: The present invention relates to the field of recombinant toxin protein production in bacterial hosts. In particular, the present invention relates to production processes for obtaining high levels of a recombinant CRM197, Diphtheria Toxin, Pertussis Toxin, Tetanus Toxoid Fragment C, Cholera Toxin B, Cholera holotoxin, and Pseudomonas Exotoxin A, from a bacterial host.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: September 10, 2013
    Assignee: Pfenex Inc.
    Inventors: Diane M. Retallack, Lawrence Chew, Hongfan Jin, Henry W. Talbot
  • Patent number: 8455218
    Abstract: The present invention relates to the field of recombinant protein production in bacterial hosts. It further relates to expression of soluble, active recombinant protein by using secretion signals to direct the protein to the periplasmic space of a bacterial cell. In particular, the present invention relates to a production process for obtaining soluble hG-CSF protein from a bacterial host.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: June 4, 2013
    Assignee: Pfenex, Inc.
    Inventors: Hongfan Jin, Lawrence Chew
  • Publication number: 20110287443
    Abstract: The present invention relates to the field of recombinant toxin protein production in bacterial hosts. In particular, the present invention relates to production processes for obtaining high levels of a recombinant CRM197, Diphtheria Toxin, Pertussis Toxin, Tetanus Toxoid Fragment C, Cholera Toxin B, Cholera holotoxin, and Pseudomonas Exotoxin A, from a bacterial host.
    Type: Application
    Filed: March 28, 2011
    Publication date: November 24, 2011
    Applicant: Pfenex Inc.
    Inventors: Diane M. Retallack, Lawrence Chew, Hongfan Jin, Henry W. Talbot
  • Publication number: 20110245474
    Abstract: The present invention relates to the field of recombinant protein production in bacterial hosts. It further relates to expression of soluble, active recombinant protein by using secretion signals to direct the protein to the periplasmic space of a bacterial cell. In particular, the present invention relates to a production process for obtaining soluble hG-CSF protein from a bacterial host.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 6, 2011
    Applicant: Pfenex Inc.
    Inventors: Hongfan Jin, Lawrence Chew
  • Publication number: 20110217784
    Abstract: The present invention relates to the field of recombinant protein production in bacterial hosts. It further relates to extraction of soluble, active recombinant protein from an insoluble fraction without the use of denaturation and without the need for a refolding step. In particular, the present invention relates to a production process for obtaining high levels a soluble recombinant Type 1 interferon protein from a bacterial host.
    Type: Application
    Filed: March 2, 2011
    Publication date: September 8, 2011
    Applicant: Pfenex, Inc.
    Inventors: Jeffrey Allen, Ping-Hua Feng, Anant Patkar, Keith L. Haney, Lawrence Chew, Lei Lei Phokham Sengchanthalangsy
  • Publication number: 20070081759
    Abstract: A method for monitoring fluid media such as a dynamic biological system in a biological reactor containing developing culture fluid media. The method includes the step of directing light into the fluid media by way of one or more optical fibers to produce an illuminated fluid media and then measuring the intensity of light reflected from the illuminated fluid media by way of one or more optical fibers, the optical fibers being partitioned from the fluid media by a transparent window having inner and outer surfaces; the fibers having ends terminating adjacent to and confronting the inner surface of the window and extending in a direction away from the window, the corresponding ends of the fibers being radially and circumferentially spaced from one another, the corresponding ends of the fibers having converging and intersecting longitudinal projections therefrom, the intersecting longitudinal projections from the fibers being entirely within the window. Additionally, a fiver optic probe is discussed.
    Type: Application
    Filed: September 28, 2006
    Publication date: April 12, 2007
    Applicant: Dow Global Technologies Inc.
    Inventors: Richard Harner, Timm Richardson, Keith Haney, Torben Bruck, Lawrence Chew
  • Publication number: 20050186666
    Abstract: The present invention provides an improved expression system for the production of recombinant polypeptides utilizing auxotrophic selectable markers. In addition, the present invention provides improved recombinant protein production in host cells through the improved regulation of expression.
    Type: Application
    Filed: November 19, 2004
    Publication date: August 25, 2005
    Applicant: Dow Global Technologies Inc.
    Inventors: Jane Schneider, Lawrence Chew, Anne Badgley, Thomas Ramseier
  • Publication number: 20050130160
    Abstract: An extremoyzme over-expression system in which Pseudomonads and closely related bacteria are used as host cells, and methods and kits for use thereof, extremozymes expressed therefrom.
    Type: Application
    Filed: February 13, 2003
    Publication date: June 16, 2005
    Inventors: Lawrence Chew, Stacey Lee, Henry Talbot