Patents by Inventor Syuuji KADOYA

Syuuji KADOYA 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).

  • Light guide plate, surface light source device, and transmission image display device
    Patent number: 8789997
    Abstract: A light guide plate according to an embodiment of the present invention is one in which light scattering dots are formed on at least one surface 12c of a light guide substrate 12. A plurality of light scattering dots 24 are formed in each of individual areas A1-A10 resulting from division of the at least one surface 12c of the light guide substrate 12 into a plurality of areas. In each of individual areas A1-A5 where a contrast ratio by the light scattering dots 24 is not more than 50%, the light scattering dots 24 include light scattering dots 24a, 24b of two or more sizes and the light scattering dots 24a, 24b of two or more sizes are arranged in an irregular order.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: July 29, 2014
    Assignees: Sumitomo Chemical Company, Limited, Seiren Co., Ltd.
    Inventors: Yasuhiro Sekiguchi, Kentarou Hyakuta, Norihisa Teranishi, Syuuji Kadoya
  • LIGHT GUIDE PLATE, SURFACE LIGHT SOURCE DEVICE, AND TRANSMISSION IMAGE DISPLAY DEVICE
    Publication number: 20120163019
    Abstract: A light guide plate according to an embodiment of the present invention is one in which light scattering dots are formed on at least one surface 12c of a light guide substrate 12. A plurality of light scattering dots 24 are formed in each of individual areas A1-A10 resulting from division of the at least one surface 12c of the light guide substrate 12 into a plurality of areas. In each of individual areas A1-A5 where a contrast ratio by the light scattering dots 24 is not more than 50%, the light scattering dots 24 include light scattering dots 24a, 24b of two or more sizes and the light scattering dots 24a, 24b of two or more sizes are arranged in an irregular order.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 28, 2012
    Applicants: SEIREN CO., LTD., SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasuhiro SEKIGUCHI, Kentarou HYAKUTA, Norihisa TERANISHI, Syuuji KADOYA