Patents by Inventor Takashi Nagayasu

Takashi Nagayasu 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).

  • Amorphous alloy member and its application for authenticity determining device and method, and process for manufacturing amorphous alloy member
    Patent number: 8325987
    Abstract: An amorphous alloy member including an irregular region having a center line average roughness Ra of about 0.1 ?m to about 1000 ?m on a surface, at least the irregular region including an amorphous alloy having an amorphous phase at a volume ratio of about 50% to about 100%. A process for manufacturing the amorphous alloy member, and an authenticity determination device and an authenticity determination method using the amorphous alloy member.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: December 4, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kensuke Ito, Takashi Nagayasu, Tomonari Sugata, Tadashi Shimizu, Tetsuya Kimura
  • Article with wireless IC tag
    Patent number: 7652579
    Abstract: A wireless IC tag mounted on a low magnetic permeability material is mounted on a holding part which has first and second surfaces and is made of a high magnetic permeability material. The holding part has a penetrating part which penetrates the first and second surfaces, and a notch which penetrates a part of the first and second surfaces at a periphery. A discontinuous region is formed on the holding part due to the notch, and at least on the penetrating part, the wireless IC tag is tightly held together with the low magnetic permeability material. An axis of reverse direction magnetic flux generated by an eddy current that flows in the periphery of the penetrating part and the notch is shifted from an axis of the magnetic flux produced by electromagnetic waves directed toward the wireless IC tag on the first and second surfaces.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: January 26, 2010
    Assignee: YKK Corporation
    Inventors: Keiichi Keyaki, Tomonari Sugata, Takashi Nagayasu, Tatsuya Deto, Norihiro Kawamura
  • Amorphous alloy member, authenticity determining device, authenticity determination method, and process for manufacturing amorphous alloy member
    Publication number: 20080081213
    Abstract: An amorphous alloy member including an irregular region having a center line average roughness Ra of about 0.1 ?m to about 1000 ?m on a surface, at least the irregular region including an amorphous alloy having an amorphous phase at a volume ratio of about 50% to about 100%. A process for manufacturing the amorphous alloy member, and an authenticity determination device and an authenticity determination method using the amorphous alloy member.
    Type: Application
    Filed: April 26, 2007
    Publication date: April 3, 2008
    Applicants: FUJI XEROX CO., LTD., YKK CORPORATION
    Inventors: Kensuke Ito, Takashi Nagayasu, Tomonari Sugata, Tadashi Shimizu, Tetsuya Kimura
  • Article with Wireless Ic Tag
    Publication number: 20070222601
    Abstract: A wireless IC tag mounted on a low magnetic permeability material is mounted on a holding part which has first and second surfaces and is made of a high magnetic permeability material. The holding part has a penetrating part which penetrates the first and second surfaces, and a notch which penetrates a part of the first and second surfaces at a periphery. A discontinuous region is formed on the holding part due to the notch, and at least on the penetrating part, the wireless IC tag is tightly held together with the low magnetic permeability material. An axis of reverse direction magnetic flux generated by an eddy current that flows in the periphery of the penetrating part and the notch is shifted from an axis of the magnetic flux produced by electromagnetic waves directed toward the wireless IC tag on the first and second surfaces.
    Type: Application
    Filed: July 8, 2004
    Publication date: September 27, 2007
    Inventors: Keiichi Keyaki, Tomonari Sugata, Takashi Nagayasu, Tatsuya Deto, Norihiro Kawamura