Patents by Inventor Shigeshi SAKABARA

Shigeshi SAKABARA 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).

  • Polarizing plate having discontinuous water-repellent portion and manufacturing method thereof
    Patent number: 11385389
    Abstract: Provided are a polarizing plate having excellent optical properties and durability, and a method for manufacturing the polarizing plate. The polarizing plate includes: a transparent substrate transparent to light in a used wavelength band; lattice-shaped protrusions arranged on the transparent substrate at a pitch shorter than the wavelength of light in the used wavelength band, extending in a predetermined direction, and having a reflective layer, a first dielectric layer, an absorbing layer, and a second dielectric layer in this order; a dielectric portion consisting of a dielectric discontinuously formed on a surface of the lattice-shaped protrusions and a surface of a bottom floor between the lattice-shaped protrusions; and a water-repellent portion formed on a surface of the dielectric portion and having water-repellent properties.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: July 12, 2022
    Assignee: DEXERIALS CORPORATION
    Inventors: Kazuyuki Shibuya, Shigeshi Sakabara, Toshiaki Sugawara, Yusuke Matsuno, Akio Takada
  • POLARIZING PLATE AND POLARIZING PLATE MANUFACTURING METHOD
    Publication number: 20200132903
    Abstract: Provided are a polarizing plate having excellent optical properties and durability, and a method for manufacturing the polarizing plate. The polarizing plate includes: a transparent substrate transparent to light in a used wavelength band; lattice-shaped protrusions arranged on the transparent substrate at a pitch shorter than the wavelength of light in the used wavelength band, extending in a predetermined direction, and having a reflective layer, a first dielectric layer, an absorbing layer, and a second dielectric layer in this order; a dielectric portion consisting of a dielectric discontinuously formed on a surface of the lattice-shaped protrusions and a surface of a bottom floor between the lattice-shaped protrusions; and a water-repellent portion formed on a surface of the dielectric portion and having water-repellent properties.
    Type: Application
    Filed: October 15, 2019
    Publication date: April 30, 2020
    Applicant: DEXERIALS CORPORATION
    Inventors: Kazuyuki SHIBUYA, Shigeshi SAKABARA, Toshiaki SUGAWARA, Yusuke MATSUNO, Akio TAKADA