Patents by Inventor Yasuhisa Nakao

Yasuhisa Nakao 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).

  • Electromagnetic wave shielding material and process for producing the same
    Patent number: 8168252
    Abstract: The present invention provides an electromagnetic wave shielding material that has high electromagnetic wave shielding effects, excellent transparency, and excellent see-through property, and a simple and inexpensive production process for the electromagnetic wave shielding material. Specifically, the present invention provides a process for producing an electromagnetic wave shielding material, the process comprising screen-printing in a geometric pattern a conductive paste containing a particulate silver oxide, a tertiary fatty acid silver salt, and a solvent, onto a transparent porous layer surface of a transparent resin substrate having a transparent porous layer containing as a main component at least one member selected from the group consisting of oxide ceramics, non-oxide ceramics, and metals; and performing heat treatment to form a conductive region with a geometric pattern on the transparent porous layer surface; and an electromagnetic wave shielding material produced by the production process.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: May 1, 2012
    Assignees: Gunze Limited, Fujikura Kasei Co., Ltd.
    Inventors: Atsushi Okada, Akio Kiyohara, Hideki Tanaka, Toshiyuki Honda, Masafumi Ito, Junichi Kato, Noboru Toshima, Yasuhisa Nakao
  • ELECTROMAGNETIC WAVE SHIELDING MATERIAL AND PROCESS FOR PRODUCING THE SAME
    Publication number: 20070212536
    Abstract: The present invention provides an electromagnetic wave shielding material that has high electromagnetic wave shielding effects, excellent transparency, and excellent see-through property, and a simple and inexpensive production process for the electromagnetic wave shielding material. Specifically, the present invention provides a process for producing an electromagnetic wave shielding material, the process comprising screen-printing in a geometric pattern a conductive paste containing a particulate silver oxide, a tertiary fatty acid silver salt, and a solvent, onto a transparent porous layer surface of a transparent resin substrate having a transparent porous layer containing as a main component at least one member selected from the group consisting of oxide ceramics, non-oxide ceramics, and metals; and performing heat treatment to form a conductive region with a geometric pattern on the transparent porous layer surface; and an electromagnetic wave shielding material produced by the production process.
    Type: Application
    Filed: May 19, 2005
    Publication date: September 13, 2007
    Applicants: Gunze Limited, Fujikura Kasei Co., Ltd.
    Inventors: Atsushi Okada, Akio Kiyohara, Hideki Tanaka, Toshiyuki Honda, Masafumi Ito, Junichi Kato, Noboru Toshima, Yasuhisa Nakao