Patents by Inventor Kouichiro Oka

Kouichiro Oka 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).

  • Publication number: 20110043902
    Abstract: The present invention relates to an optical article which has high surface hardness and absorbs an electromagnetic wave such as a visible light, ultraviolet radiation, infrared radiation, X-rays, ?-rays and ?-rays, in particular, a functional optical article represented by a prescription lens, sunglasses, a goggle lens, a shield and an optical filter. The present invention provides an optical article comprising a laminated substance in which a plastic sheet, a resin layer and a backup resin are laminated in this order, wherein the resin layer containing an electromagnetic wave absorbing agent.
    Type: Application
    Filed: August 13, 2010
    Publication date: February 24, 2011
    Applicant: YAMAMOTO KOGAKU CO., LTD.
    Inventors: Fumio ISHIBASHI, Hirokazu KOBAYASHI, Kouichiro OKA
  • Publication number: 20090100577
    Abstract: A double lens includes a front lens member, a back lens member and a gasket. A back curve side of the front lens member and a front curve side of the back lens member are contraposed in parallel, and fixed together with the gasket, at least one of the back curve side of the front lens member and the front curve side of the back lens member has an antifogging film which is formed avoiding part of a gasket bonding area. This double lens provides goggles or a shield in which fogging is less likely to be generated, the gasket is less likely to be separated, and the front curve side of the front lens member is less likely to be damaged.
    Type: Application
    Filed: October 2, 2008
    Publication date: April 23, 2009
    Applicant: Yamamoto Kogaku Co., Ltd.
    Inventors: Hirokazu Kobayashi, Keishi Yoshikawa, Kouichiro Oka