Patents by Inventor Hung Trong La

Hung Trong La 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).

  • Multilayer retardation film and method for producing same
    Patent number: 9535202
    Abstract: A layered phase difference film including, in the following order: a resin layer A1 formed of a resin A1 having a positive intrinsic birefringence; a resin layer B formed of a resin B having a negative intrinsic birefringence; and a resin layer A2 formed of a resin A2 having a positive intrinsic birefringence, wherein the resin layer A1 and the resin layer B are in direct contact with each other, the resin layer B and the resin layer A2 are in direct contact with each other, the resin layer A1 and the resin layer A2 are negative C-plates, the resin layer B is a positive B-plate, and the layered phase difference film has an Nz coefficient within a range of 0 to 1.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: January 3, 2017
    Assignee: ZEON CORPORATION
    Inventors: Kazuki Takagi, Hung Trong La
  • MULTILAYER RETARDATION FILM AND METHOD FOR PRODUCING SAME
    Publication number: 20150378079
    Abstract: A layered phase difference film including, in the following order: a resin layer A1 formed of a resin A1 having a positive intrinsic birefringence; a resin layer B formed of a resin B having a negative intrinsic birefringence; and a resin layer A2 formed of a resin A2 having a positive intrinsic birefringence, wherein the resin layer A1 and the resin layer B are in direct contact with each other, the resin layer B and the resin layer A2 are in direct contact with each other, the resin layer A1 and the resin layer A2 are negative C-plates, the resin layer B is a positive B-plate, and the layered phase difference film has an Nz coefficient within a range of 0 to 1.
    Type: Application
    Filed: January 23, 2014
    Publication date: December 31, 2015
    Inventors: Kazuki TAKAGI, Hung Trong LA
  • Optically anisotropic body and liquid crystal display
    Patent number: 7719645
    Abstract: The present invention provides a liquid crystal display that prevents false colors and has a wide viewing angle, display screen contrast that does not decline, and excellent productivity.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: May 18, 2010
    Assignee: Zeon Corporation
    Inventors: Hung Trong La, Shuhei Okude
  • Optically anisotropic body and liquid crystal display
    Publication number: 20090316094
    Abstract: The present invention provides a liquid crystal display that prevents false colors and has a wide viewing angle, display screen contrast that does not decline, and excellent productivity.
    Type: Application
    Filed: April 28, 2006
    Publication date: December 24, 2009
    Applicant: Zeon Corporation
    Inventors: Hung Trong La, Shuhei Okude