Patents by Inventor Shigeo Furuta

Shigeo Furuta 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).

  • Patent number: 7679946
    Abstract: Disclosed is a memory element array comprising a plurality of memory elements arranged in an array, wherein the memory elements are switching elements each including a gap of nanometer order in which a switching phenomenon of resistance is caused by applying a predetermined voltage between electrodes, and the memory element array is provided with tunnel elements respectively connected to the switching elements in series, each of the tunnel elements preventing generation of a sneak path current flowing to another switching element at a time of applying the predetermined voltage.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: March 16, 2010
    Assignees: Funai Electric Advanced Applied Technology Research Institute Inc., Funai Electric Co., Ltd.
    Inventors: Shigeo Furuta, Yuichiro Masuda, Tsuyoshi Takahashi, Masatoshi Ono
  • Publication number: 20090251199
    Abstract: A switching element 100 includes an insulating substrate 10, a first electrode 20 provided on the insulating substrate 10, a second electrode 30 provided on the insulating substrate 10, and an interelectrode gap 40 provided between the first electrode 20 and the second electrode 30, a distance G between the first electrode 20 and the second electrode 30 being 0 nm<C?50 nm.
    Type: Application
    Filed: September 25, 2006
    Publication date: October 8, 2009
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, FUNAI ELECTRIC ADVANCED APPLIED TECHNOLOGY RESEARCH INSTITUTE INC.
    Inventors: Yasuhisa Naitoh, Masayo Horikawa, Hidekazu Abe, Tetsuo Shimizu, Wataru Mizutani, Shigeo Furuta, Masatoshi Ono, Tsuyoshi Takahashi
  • Publication number: 20090161407
    Abstract: A nanogap switching element is equipped with an inter-electrode gap portion including a gap of a nanometer order between a first electrode and a second electrode. A switching phenomenon is caused in the inter-electrode gap portion by applying a voltage between the first and second electrodes. The nanogap switching element is shifted from its low resistance state to its high resistance state by receiving a voltage pulse application of a first voltage value, and shifted from its high resistance state to its low resistance state by receiving a voltage pulse application of a second voltage value lower than the first voltage value. When the nanogap switching element is shifted from the high resistance state to the low resistance state, a voltage pulse of an intermediate voltage value between the first and second voltage values is applied thereto before the voltage pulse application of the second voltage value thereto.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 25, 2009
    Applicants: Funai Electric Advanced Applied Technology Research Institute Inc., National Institute of Advanced Industrial Science and Technology, Funai Electric Co., Ltd.
    Inventors: Yuichiro MASUDA, Shigeo FURUTA, Tsuyoshi TAKAHASHI, Tetsuo SHIMIZU, Yasuhisa NAITOH, Masayo HORIKAWA
  • Publication number: 20090052223
    Abstract: Disclosed is a switching element including: an insulative substrate; a first electrode and a second electrode provided to the insulative substrate; an interelectrode gap between the first electrode and the second electrode, comprising a gap of a nanometer order which causes switching phenomenon of resistance by applying a predetermined voltage between the first electrode and the second electrode; and a sealing member to seal the interelectrode gap such that the gap is retained.
    Type: Application
    Filed: August 20, 2008
    Publication date: February 26, 2009
    Applicants: Funai Electric Advanced Applied Technology Research Institute Inc., Funai Electric Co., Ltd.
    Inventors: Shigeo Furuta, Tsuyoshi Takahashi, Masatoshi Ono
  • Publication number: 20080316797
    Abstract: Disclosed is a memory element array comprising a plurality of memory elements arranged in an array, wherein the memory elements are switching elements each including a gap of nanometer order in which a switching phenomenon of resistance is caused by applying a predetermined voltage between electrodes, and the memory element array is provided with tunnel elements respectively connected to the switching elements in series, each of the tunnel elements preventing generation of a sneak path current flowing to another switching element at a time of applying the predetermined voltage.
    Type: Application
    Filed: June 18, 2008
    Publication date: December 25, 2008
    Applicants: Funai Electric Advanced Applied Technology Research Institute Inc., Funai Electric Co., Ltd.
    Inventors: Shigeo Furuta, Yuichiro Masuda, Tsuyoshi Takahashi, Masatoshi Ono
  • Publication number: 20080315184
    Abstract: A switching element comprising: an insulative substrate; a first electrode and a second electrode provided on one surface of the insulative substrate; and an interelectrode gap which is provided between the first electrode and the second electrode, and which has a gap on the order of nanometers in which switching phenomenon of resistance occurs by applying predetermined voltage between the first electrode and the second electrode, wherein the one surface of the insulative substrate contains nitrogen.
    Type: Application
    Filed: June 17, 2008
    Publication date: December 25, 2008
    Applicants: Funai Electric Advanced Applied Technology Research Institute Inc., National Institute of Advanced Industrial Science and Technology, Funai Electric Co., Ltd.
    Inventors: Shigeo Furuta, Yuichiro Masuda, Tsuyoshi Takahashi, Masatoshi Ono, Yasuhisa Naitoh, Masayo Horikawa, Tetsuo Shimizu
  • Patent number: 5344123
    Abstract: The device has a device body including an inside space having an airtightness able to provide a nonactive gas atmosphere, the inside space having a charging port, a filling port and a melting chamber surrounded by an induction heating coil; a first piston transporting a non-ferrous alloy lump to the melting chamber; and a second piston permitting the melted non-ferrous alloy to flow out of the filling port.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: September 6, 1994
    Assignee: Hanano Corporation
    Inventors: Takashi Hanano, Shigeo Furuta