Patents by Inventor Daniel V. Levy

Daniel V. Levy 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).

  • Asymmetric synthesis of funapide
    Patent number: 10100060
    Abstract: This invention is directed to asymmetric synthesis of funapide, which is useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: October 16, 2018
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Ronen Ben-David, Jian Chen, Michael A. Christie, Mina Gadelrab Dimitri, Graciela Noemi Gershon, Linli He, Nelson G. Landmesser, Daniel V. Levy, Orel Yosef Mizrahi, Partha S. Mudipalli, Harlan F. Reese, Joseph A. Sclafani, Yi Wang
  • ASYMMETRIC SYNTHESIS OF FUNAPIDE
    Publication number: 20180002341
    Abstract: This invention is directed to asymmetric synthesis of funapide, which is useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: June 16, 2017
    Publication date: January 4, 2018
    Inventors: Ronen Ben-David, Jian Chen, Michael A. Christie, Mina Gadelrab Dimitri, Graciela Noemi Gershon, Linli He, Nelson G. Landmesser, Daniel V. Levy, Orel Yosef Mizrahi, Partha S. Mudipalli, Harlan F. Reese, Joseph A. Sclafani, Yi Wang
  • Thiuram tetrasulfide containing photogenerating layer
    Patent number: 8119316
    Abstract: A photoconductor comprising a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the photogenerating layer contains a thiuram sulfide additive.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: February 21, 2012
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Daniel V Levy, Jin Wu, Markus R Silvestri
  • Urea resin containing photogenerating layer photoconductors
    Patent number: 7989128
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the photogenerating layer contains a urea resin.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: August 2, 2011
    Assignee: Xerox Corporation
    Inventors: Daniel V Levy, Liang-Bih Lin, Jin Wu
  • Metal mercaptoimidazoles containing photoconductors
    Patent number: 7989126
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer, and where the at least one charge transport layer and the photogenerating layer contain a metal mercaptoimidazole.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: August 2, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Markus R Silvestri, Sherri A Colon, Daniel V Levy
  • Benzothiazole containing photogenerating layer
    Patent number: 7935466
    Abstract: A photoconductor that includes a supporting substrate, a photogenerating layer, and at least one charge transport layer that contains at least one charge transport component, and where the photogenerating layer contains a benzothiazolesulfenimide additive.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: May 3, 2011
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Daniel V Levy, Dale S Renfer, Markus R Silvestri
  • Imaging member
    Patent number: 7923188
    Abstract: The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an improved electrostatographic imaging member having a charge transport layer that is partially crosslinked, wherein the crosslinking is achieved by incorporating a small amount of compatible thermalsetting resins into the layer. Incorporation of these resins have been shown to increase charge transport life.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: April 12, 2011
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Daniel V. Levy, Jin Wu, Robert W. Hedrick, Linda Ferrarese
  • Imaging member
    Patent number: 7923187
    Abstract: The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an improved electrostatographic imaging member having a charge transport layer that is partially crosslinked, wherein the crosslinking is achieved by incorporating a small amount of compatible thermalsetting resins into the layer. Incorporation of these resins have been shown to increase charge transport life.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: April 12, 2011
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Daniel V. Levy
  • Photoconductors
    Patent number: 7862967
    Abstract: A photoconductor that includes a supporting substrate, a first photogenerating layer, a second photogenerating layer and at least one charge transport layer. The first photogenerating layer contains, for example, a phthalocyanine pigment, and the second photogenerating layer contains a different phthalocyanine pigment than the first photogenerating layer phthalocyanine.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: January 4, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Markus R. Silvestri, Kent J. Evans, Daniel V. Levy, Michael A. Morgan, M. John Hinckel, Liang-Bih Lin
  • Imaging member
    Patent number: 7838187
    Abstract: The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an improved electrostatographic imaging member having a charge transport layer that is dual-dopant, wherein operating life improvement is achieved by incorporating a small amount of compatible thermalsetting resin and polyhedral oligomeric silsesquioxane into the layer. Incorporation of these resins have been shown to increase charge transport life.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: November 23, 2010
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Daniel V. Levy, Jin Wu, Robert W. Hedrick, Gary A. Batt, M. John Hinckel
  • Overcoated photoconductors
    Patent number: 7771907
    Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer, a charge transport layer, and a top overcoating layer in contact with and contiguous to the charge transport layer.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, John F Yanus, Kenny-Tuan Dinh, Daniel V Levy
  • Photoconductor containing fluoroalkyl ester charge transport layers
    Patent number: 7767372
    Abstract: A photoconductor containing a supporting substrate, a photogenerating layer, and at least one charge transport layer which contains a fluoroalkyl ester.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: August 3, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Steven D. Bush, Joseph A. Tumminelli, Marc J. Livecchi, Linda L. Ferrarese, Michael A. Morgan, Lanhui Zhang, Lin Ma, John J. Wilbert, Daniel V. Levy, Liang-Bih Lin
  • Photoconductors containing fluorinated components
    Patent number: 7763405
    Abstract: A photoconductor containing a fluoroalkyl ester layer, a supporting substrate, a photogenerating layer, and at least one charge transport layer.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: July 27, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Ryan J. Ehmann, Lanhui Zhang, Lin Ma, Liang-Bih Lin, Daniel V. Levy
  • Photoconductors containing fluorogallium phthalocyanines
    Patent number: 7759031
    Abstract: A photoconductor comprising an optional supporting substrate, a fluorogallium phthalocyanine containing photogenerating layer, and at least one charge transport layer.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: July 20, 2010
    Assignee: Xerox Corporation
    Inventors: Daniel V. Levy, Liang-Bih Lin, Jin Wu
  • Electrophotographic imaging member undercoat layers
    Patent number: 7732112
    Abstract: An imaging member includes a substrate; a charge generation layer positioned on the substrate; at least one charge transport layer positioned on the charge generation layer; and an undercoat layer positioned on the substrate on a side opposite the charge generation layer, the undercoat layer comprising a binder component and a metallic component comprising metal thiocyanate and metal oxide.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: June 8, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Daniel V. Levy, Liang-bih Lin
  • Silicone free polyester in undercoat layer of photoconductive member
    Patent number: 7722999
    Abstract: A photoconductor containing a substrate, a layer thereover, which layer contains, for example, a polyol resin, an aminoplast resin, a silicone free polyester, and a metal oxide dispersed therein; and at least one imaging layer formed on the polyol resin containing layer.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: May 25, 2010
    Assignee: Xerox Corporation
    Inventors: Daniel V. Levy, Jin Wu, Liang-Bih Lin, Francisco J. Lopez
  • Phosphonium containing charge transport layer photoconductors
    Patent number: 7709168
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the at least one charge transport layer contains at least one phosphonium salt.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: May 4, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Edward F Grabowski, Kent J Evans, Daniel V Levy
  • Single layered photoconductors
    Patent number: 7700249
    Abstract: A photoconductor that includes a supporting substrate, and an active layer in contact with the substrate, and which active layer contains a photogenerating pigment of a hydroxygallium phthalocyanine, at least one charge transport component, and a mixture of a metal oxide and a chelating agent, where the phthalocyanine is, for example, prepared by hydrolyzing a gallium halide phthalocyanine.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: April 20, 2010
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Daniel V. Levy, Jin Wu, Edward C. Savage
  • Titanyl phthalocyanine photoconductors
    Patent number: 7700250
    Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer thereover, and at least one charge transport layer, and wherein the photogenerating layer contains a chelating agent, and a Type V titanyl phthalocyanine prepared, for example, by dissolving a Type I titanyl phthalocyanine in a solution comprising a trihaloacetic acid and an alkylene halide; adding the mixture comprising the dissolved Type I titanyl phthalocyanine to a solution comprising an alcohol and an alkylene halide thereby precipitating a Type Y titanyl phthalocyanine; and treating the Type Y titanyl phthalocyanine with a monohalobenzene.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: April 20, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, John S. Chambers, Francisco J. Lopez, Daniel V. Levy, Liang-Bih Lin
  • Process for preparing organic photosensitive pigment
    Patent number: 7682762
    Abstract: Processes for making photosensitive organic pigments for use in imaging members, specifically processes for making photosensitive phthalocyanine pigments having a specific nanocrystal form. Embodiments include a copper phthalocyanine nanocrystal with good charge generation for use in the formulation of a charge generating layer and narrow particle size distribution.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: March 23, 2010
    Assignee: Xerox Corporation
    Inventors: Daniel V. Levy, Liang-bih Lin, Jin Wu