Patents by Inventor Lawrence Cheung

Lawrence Cheung 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: 11840017
    Abstract: An improved additive fabrication device and a build platform are provided. The additive fabrication device is configured to form layers of material on a build surface. The additive fabrication device comprising: a build platform comprising: a rigid structure; an actuation structure attached to the rigid structure, wherein the actuation structure comprises one or more sheet handles and a flexible sheet, and wherein a first surface of the flexible sheet forms a build surface on which the additive fabrication device is configured to form layers of materials; and the one or more sheet handles are configured to be actuated to apply a force to the flexible sheet while at least a part of the actuation structure remains attached to the rigid structure, to deform at least a part of the flexible sheet away from the rigid structure.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: December 12, 2023
    Assignee: Formlabs, Inc.
    Inventors: Mark J. Frykman, Mark J. Ripoll, Lawrence Cheung, Nathan Jeffery, Yoav Reches, Derek J. Vilim
  • Publication number: 20220410477
    Abstract: An improved additive fabrication device and a build platform are provided. The additive fabrication device is configured to form layers of material on a build surface. The additive fabrication device comprising: a build platform comprising: a rigid structure; an actuation structure attached to the rigid structure, wherein the actuation structure comprises one or more sheet handles and a flexible sheet, and wherein a first surface of the flexible sheet forms a build surface on which the additive fabrication device is configured to form layers of materials; and the one or more sheet handles are configured to be actuated to apply a force to the flexible sheet while at least a part of the actuation structure remains attached to the rigid structure, to deform at least a part of the flexible sheet away from the rigid structure.
    Type: Application
    Filed: June 21, 2022
    Publication date: December 29, 2022
    Applicant: Formlabs, Inc.
    Inventors: Mark J. Frykman, Mark J. Ripoll, Lawrence Cheung, Nathan Jeffery, Yoav Reches, Derek J. Vilim
  • Patent number: 9388397
    Abstract: Recombinant gelonin polypeptides with decreased antigenicity are provided. Cell-targeted constructs comprising said recombinant gelonin polypeptides are also provided. Such constructs can be used in methods for targeted cell killing, such as for treatment of cell proliferative diseases (e.g., cancer).
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: July 12, 2016
    Assignee: Research Development Foundation
    Inventors: Michael G. Rosenblum, Lawrence Cheung
  • Publication number: 20150368628
    Abstract: Recombinant gelonin polypeptides with decreased antigenicity are provided. Cell-targeted constructs comprising said recombinant gelonin polypeptides are also provided. Such constructs can be used in methods for targeted cell killing, such as for treatment of cell proliferative diseases (e.g., cancer).
    Type: Application
    Filed: February 14, 2014
    Publication date: December 24, 2015
    Applicant: RESEARCH DEVELOPMENT FOUNDATION
    Inventors: Michael G. ROSENBLUM, Lawrence CHEUNG
  • Patent number: 8138311
    Abstract: The present invention concerns methods of reducing the antigenicity of a proteinaceous compound while maintaining the compounds biological activity, as well as proteinaceous compositions with biological activity but reduced antigenicity. These methods and compositions have significant benefits to a subject in need of such compounds and compositions. Also included are modified toxin compounds that are truncated and/or possess reduce antigenicity. Such designer toxins have therapeutic, diagnostic, and preventative benefits, particularly as immunotoxins. Methods of treating cancer using these immunotoxins are provided.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: March 20, 2012
    Assignee: Research Development Foundation
    Inventors: Michael G. Rosenblum, Lawrence Cheung
  • Publication number: 20110288275
    Abstract: The present invention concerns methods of reducing the antigenicity of a proteinaceous compound while maintaining the compounds biological activity, as well as proteinaceous compositions with biological activity but reduced antigenicity. These methods and compositions have significant benefits to a subject in need of such compounds and compositions. Also included are modified toxin compounds that are truncated and/or possess reduce antigenicity. Such designer toxins have therapeutic, diagnostic, and preventative benefits, particularly as immunotoxins. Methods of treating cancer using these immunotoxins are provided.
    Type: Application
    Filed: April 26, 2011
    Publication date: November 24, 2011
    Applicant: RESEARCH DEVELOPMENT FOUNDATION
    Inventors: Michael G. Rosenblum, Lawrence Cheung
  • Patent number: 7943571
    Abstract: The present invention concerns methods of reducing the antigenicity of a proteinaceous compound while maintaining the compounds biological activity, as well as proteinaceous compositions with biological activity but reduced antigenicity. These methods and compositions have significant benefits to a subject in need of such compounds and compositions. Also included are modified toxin compounds that are truncated and/or possess reduce antigenicity. Such designer toxins have therapeutic, diagnostic, and preventative benefits, particularly as immunotoxins. Methods of treating cancer using these immunotoxins are provided.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: May 17, 2011
    Assignee: Research Development Foundation
    Inventors: Michael G. Rosenblum, Lawrence Cheung
  • Publication number: 20100247518
    Abstract: The present invention concerns methods of reducing the antigenicity of a proteinaceous compound while maintaining the compounds biological activity, as well as proteinaceous compositions with biological activity but reduced antigenicity. These methods and compositions have significant benefits to a subject in need of such compounds and compositions. Also included are modified toxin compounds that are truncated and/or possess reduce antigenicity. Such designer toxins have therapeutic, diagnostic, and preventative benefits, particularly as immunotoxins. Methods of treating cancer using these immunotoxins are provided.
    Type: Application
    Filed: May 24, 2010
    Publication date: September 30, 2010
    Inventors: MICHAEL G. ROSENBLUM, LAWRENCE CHEUNG
  • Patent number: 7741278
    Abstract: The present invention concerns methods of reducing the antigenicity of a proteinaceous compound while maintaining the compounds biological activity, as well as proteinaceous compositions with biological activity but reduced antigenicity. These methods and compositions have significant benefits to a subject in need of such compounds and compositions. Also included are modified toxin compounds that are truncated and/or possess reduce antigenicity. Such designer toxins have therapeutic, diagnostic, and preventative benefits, particularly as immunotoxins. Methods of treating cancer using these immunotoxins are provided.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: June 22, 2010
    Assignee: Research Development Foundation
    Inventors: Michael G. Rosenblum, Lawrence Cheung
  • Publication number: 20080292544
    Abstract: The present invention concerns methods of reducing the antigenicity of a proteinaceous compound while maintaining the compounds biological activity, as well as proteinaceous compositions with biological activity but reduced antigenicity. These methods and compositions have significant benefits to a subject in need of such compounds and compositions. Also included are modified toxin compounds that are truncated and/or possess reduce antigenicity. Such designer toxins have therapeutic, diagnostic, and preventative benefits, particularly as immunotoxins. Methods of treating cancer using these immunotoxins are provided.
    Type: Application
    Filed: September 17, 2007
    Publication date: November 27, 2008
    Inventors: Michael G. Rosenblum, Lawrence Cheung
  • Patent number: 7304308
    Abstract: A flat panel x-ray imager exhibiting reduced ghosting effects and overvoltage protection by appropriate leakage current characteristics of the thin-film transistor array. A top electrode of a suitable material is directly on an amorphous selenium-based charge generator layer allowing charge transport across the layer, thereby reducing ghosting. Alternatively, a non-insulating organic layer may be between the top electrode and the charge generating layer. The thin-film transistors have leakage current that rises relatively slowly with voltage across the transistor within a range that matches exposure through an object being imaged but rises at a sufficiently higher rate within a higher range to provide protection even when a corresponding region of the charge generator layer receives greater amounts of x-rays. A voltage is applied to the top electrode. This voltage may be within the range of 500 V to 2,000 V.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: December 4, 2007
    Assignee: Hologic, Inc.
    Inventors: Lawrence Cheung, Snezana Bogdanovich, Elena Ingal, Cornell L. Williams
  • Patent number: 7285635
    Abstract: The present invention concerns methods of reducing the antigenicity of a proteinaceous compound while maintaining the compounds biological activity, as well as proteinaceous compositions with biological activity but reduced antigenicity. These methods and compositions have significant benefits to a subject in need of such compounds and compositions. Also included are modified toxin compounds that are truncated and/or possess reduce antigenicity. Such designer toxins have therapeutic, diagnostic, and preventative benefits, particularly as immunotoxins. Methods of treating cancer using these immunotoxins are provided.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: October 23, 2007
    Assignee: Research Development Foundation
    Inventors: Michael G. Rosenblum, Lawrence Cheung
  • Patent number: 7233005
    Abstract: A flat panel x-ray imager exhibiting reduced ghosting effects and overvoltage protection by appropriate leakage current characteristics of the thin-film transistor array. A top electrode of a suitable material is directly on a non-insulating organic layer. The organic layer is directly on an amorphous selenium-based charge generator layer allowing charge transport across the layer, thereby reducing ghosting. The thin-film transistors have leakage current that rises relatively slowly with voltage across the transistor within a range that matches exposure through an object being imaged but rises at a sufficiently higher rate within a higher range to provide protection even when a corresponding region of the charge generator layer receives greater amounts of x-rays.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: June 19, 2007
    Assignee: Hologic, Inc.
    Inventors: Snezana Bogdanovich, Lawrence Cheung, Zhenxue Jing, Samir Parikh
  • Publication number: 20070036780
    Abstract: The present invention concerns methods of reducing the antigenicity of a proteinaceous compound while maintaining the compounds biological activity, as well as proteinaceous compositions with biological activity but reduced antigenicity. These methods and compositions have significant benefits to a subject in need of such compounds and compositions. Also included are modified toxin compounds that are truncated and/or possess reduce antigenicity. Such designer toxins have therapeutic, diagnostic, and preventative benefits, particularly as immunotoxins. Methods of treating cancer using these immunotoxins are provided.
    Type: Application
    Filed: April 25, 2006
    Publication date: February 15, 2007
    Inventors: Michael Rosenblum, Lawrence Cheung
  • Patent number: 7122803
    Abstract: A flat panel x-ray imager exhibiting reduced ghosting effects and overvoltage protection by appropriate leakage current characteristics of the thin-film transistor array. A top electrode of a suitable material is directly on and in physical and electrical contact with an amorphous selenium-based charge generator layer, thereby reducing ghosting. The thin-film transistors have leakage current that rises relatively slowly with voltage across the transistor within a range that matches exposure through an object being imaged but rises at a sufficiently higher rate within a higher range to provide protection even when a corresponding region of the charge generator layer receives greater amounts of x-rays.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: October 17, 2006
    Assignee: Hologic, Inc.
    Inventors: Zhenxue Jing, Lawrence Cheung
  • Publication number: 20060192131
    Abstract: A flat panel x-ray imager exhibiting reduced ghosting effects and overvoltage protection by appropriate leakage current characteristics of the thin-film transistor array. A top electrode of a suitable material is directly on an amorphous selenium-based charge generator layer allowing charge transport across the layer, thereby reducing ghosting. Alternatively, a non-insulating organic layer may be between the top electrode and the charge generating layer. The thin-film transistors have leakage current that rises relatively slowly with voltage across the transistor within a range that matches exposure through an object being imaged but rises at a sufficiently higher rate within a higher range to provide protection even when a corresponding region of the charge generator layer receives greater amounts of x-rays. A voltage is applied to the top electrode. This voltage may be within the range of 500 V to 2,000 V.
    Type: Application
    Filed: April 27, 2006
    Publication date: August 31, 2006
    Inventors: Lawrence Cheung, Snezana Bogdanovich, Elena Ingal, Cornell Williams
  • Publication number: 20060180768
    Abstract: A flat panel x-ray imager exhibiting reduced ghosting effects and overvoltage protection by appropriate leakage current characteristics of the thin-film transistor array. A top electrode of a suitable material is directly on a non-insulating organic layer. The organic layer is directly on an amorphous selenium-based charge generator layer allowing charge transport across the layer, thereby reducing ghosting. The thin-film transistors have leakage current that rises relatively slowly with voltage across the transistor within a range that matches exposure through an object being imaged but rises at a sufficiently higher rate within a higher range to provide protection even when a corresponding region of the charge generator layer receives greater amounts of x-rays.
    Type: Application
    Filed: January 27, 2006
    Publication date: August 17, 2006
    Inventors: Snezana Bogdanovich, Lawrence Cheung, Zhenxue Jing, Samir Parikh
  • Publication number: 20060180771
    Abstract: A flat panel x-ray imager exhibiting reduced ghosting effects and overvoltage protection by appropriate leakage current characteristics of the thin-film transistor array. A top electrode of a suitable material is directly on and in physical and electrical contact with an amorphous selenium-based charge generator layer, thereby reducing ghosting. The thin-film transistors have leakage current that rises relatively slowly with voltage across the transistor within a range that matches exposure through an object being imaged but rises at a sufficiently higher rate within a higher range to provide protection even when a corresponding region of the charge generator layer receives greater amounts of x-rays.
    Type: Application
    Filed: February 16, 2005
    Publication date: August 17, 2006
    Inventors: Zhenxue Jing, Lawrence Cheung
  • Publication number: 20060171919
    Abstract: The present invention regards targeted BLyS polypeptides capable of binding to BLyS receptors and that deliver a cytotoxic agent, such as a cytotoxic peptide, for example. In particular aspects, the cytotoxic agent comprises at least part of rGelonin. These compositions are useful for treating, preventing, and/or monitoring therapy for a B-cell proliferative disorder.
    Type: Application
    Filed: February 1, 2006
    Publication date: August 3, 2006
    Applicant: Research Development Foundation
    Inventors: Michael Rosenblum, Lawrence Cheung, Mi-Ae Lyu
  • Patent number: D949093
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: April 19, 2022
    Assignee: Formlabs, Inc.
    Inventors: Yoav Reches, John E. Ouchterlony, Kat Ely, Lawrence Cheung