Patents by Inventor Noriaki Okunaka

Noriaki Okunaka 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: 20220326595
    Abstract: The writable screen of the present invention includes a base layer and a resin layer provided on the base layer. The resin layer has a surface gloss of 1% to 20% and a surface pencil hardness of 5H to 2B. The present invention can improve the erasability with a whiteboard eraser for writing made with a whiteboard marker and also can prevent or reduce the occurrence of a hot spot and glare.
    Type: Application
    Filed: July 16, 2020
    Publication date: October 13, 2022
    Inventors: Kyohei NOMURA, Noriaki OKUNAKA
  • Patent number: 5188395
    Abstract: The present invention provides a waterproof recording material having ground patterns characterized in that the ground patterns are imparted to the surface of a film of a resin composition comprising a thermoplastic synthetic resin and a filler. According to this invention, it is possible to provide a fine-looking recording material which, besides excellent waterproofness and recording property, may have various stages of surface properties and visual effects imparted by means of the ground patterns. The waterproof recording material having ground patterns of the present invention is suitable as a material of valuable securities and the like, facilitating true/false discrimination and preventing illegal use or abuse thereof by altering, falsification et cetera.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: February 23, 1993
    Assignee: Goyo Paper Working Co., Ltd.
    Inventors: Hiroshi Kawahara, Noriaki Okunaka, Mitsuru Kobayashi, Isao Tokuno, Shuzo Ohara
  • Patent number: 4937110
    Abstract: The present invention provides a laminated material for cups good for both hot and cold drinks comprising a base material and a resin layer laminated thereon, wherein the melting point of the aforementioned resin layer is not less than 95.degree. C. when measured by DSC, the difference .DELTA..theta. between the advancing contact angle (.theta.a) and the receding contact angle (.theta.r) for water is not more than 20.degree., and the resin layer has a heat sealability. According to the present invention, a laminated material for cups good for both hot and cold drinks can be provided, these cups being also excellent in bubble-arresting property and sliding property as well as vending property.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: June 26, 1990
    Assignee: Goyo Paper Working Co. Ltd.
    Inventors: Shuzo Ohara, Ryoichi Kitamura, Hiroshi Kawahara, Noriaki Okunaka, Yoshimi Enomoto