Patents by Inventor Yasuhiro Iijima

Yasuhiro Iijima 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: 6495008
    Abstract: A method is presented for making a polycrystalline thin film (B) by depositing particles emitted from a target (36) on a substrate base (A) to form the film (B) constituted by the target material while concurrently irradiating the depositing particles with an ion beam generated by an ion source (39) at an angle of incidence, in a range of 50 to 60 degrees to a normal (H) to a film surface, and maintaining a film temperature at less than 300 degrees Celsius. This method is effective in producing an excellent alignment of crystal axes of the grains in the film when the film thickness exceeds 200 nm. The target material includes yttrium-stabilized zirconia but other material can also be used. A layer (C) of a superconducting substance formed on top of the polycrystalline thin film (B) produces a superconducting film (22) exhibiting excellent superconducting properties.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: December 17, 2002
    Assignee: Fujikura Ltd.
    Inventors: Yasuhiro Iijima, Mariko Hosaka, Nobuo Tanabe, Nobuyuki Sadakata, Takashi Saitoh
  • Publication number: 20020157601
    Abstract: A polycrystalline thin film of MgO is formed on a substrate by an ion sputtering process wherein the thin film is obtained by irradiating a target with an ion beam to dislodge particles from the target and deposit the particles on the substrate. The film is preferably formed in an atmosphere at a reduced pressure of 3.0×10−2 Pa or lower while keeping the substrate temperature at 300° C. or lower.
    Type: Application
    Filed: October 6, 2001
    Publication date: October 31, 2002
    Inventors: Yasuhiro Iijima, Mariko Kimura, Takashi Saito
  • Patent number: 6448959
    Abstract: A desired region specifying system in an image editing apparatus in which a region selecting information is an analog signal generated from, for example, a pressure sensor provided in a stylus pen, for selecting the regions from overlapping regions.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: September 10, 2002
    Assignee: Fujitsu, Limited
    Inventors: Naohisa Kawaguchi, Yasuhiro Iijima, Kazumi Saito
  • Publication number: 20020076567
    Abstract: The present invention provides a tape-formed oxide superconductor having high c-axis alignment and in-plane alignment and an improved Jc value. Thus, on a tape-formed metal substrate of non-magnetism or weak magnetism and high strength, there are sequentially formed a first intermediate layer where YSZ or Zr2Rx2O7 particles generated from the target are deposited onto the metal substrate together with irradiation of ion from an inclined direction to the metal substrate, a second intermediate layer comprising CeO2 or Y2O3 and an RE1+XBa2−XCu3OY superconducting layer formed by coating of metalorganic salts containing F followed by subjecting to a thermal decomposition.
    Type: Application
    Filed: October 12, 2001
    Publication date: June 20, 2002
    Inventors: Tetsuji Honjo, Hiroshi Fuji, Yuichi Nakamura, Teruo Izumi, Takeshi Araki, Yutaka Yamada, Izumi Hirabayashi, Yuh Shiohara, Yasuhiro Iijima, Kaoru Takeda
  • Publication number: 20010006042
    Abstract: A method is presented for making a polycrystalline thin film (B) by depositing particles emitted from a target (36) on a substrate base (A) to form the film (B) constituted by the target material while concurrently irradiating the depositing particles with an ion beam generated by an ion source (39) at an angle of incidence, in a range of 50 to 60 degrees to a normal (H) to a film surface, and maintaining a film temperature at less than 300 degrees Celsius. This method is effective in producing an excellent alignment of crystal axes of the grains in the film when the film thickness exceeds 200 nm. The target material includes yttrium-stabilized zirconia but other material can also be used. A layer (C) of a superconducting substance formed on top of the polycrystalline thin film (B) produces a superconducting film (22) exhibiting excellent superconducting properties.
    Type: Application
    Filed: February 16, 2001
    Publication date: July 5, 2001
    Applicant: FUJIKURA LTD.
    Inventors: Yasuhiro Iijima, Mariko Hosaka, Nobuo Tanabe, Nobuyuki Sadakata, Takashi Saitoh
  • Patent number: 6214772
    Abstract: A method is presented for making a polycrystalline thin film (B) by depositing particles emitted from a target (36) on a substrate base (A) to form the film (B) constituted by the target material while concurrently irradiating the depositing particles with an ion beam generated by an ion source (39) at an angle of incidence, in a range of 50 to 60 degrees to a normal (H) to a film surface, and maintaining a film temperature at less than 300 degrees Celsius. This method is effective in producing an excellent alignment of crystal axes of the grains in the film when the film thickness exceeds 200 nm. The target material includes yttrium-stabilized zirconia but other material can also be used. A layer (C) of a superconducting substance formed on top of the polycrystalline thin film (B) produces a superconducting film (22) exhibiting excellent superconducting properties.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: April 10, 2001
    Assignee: Fujikura Ltd.
    Inventors: Yasuhiro Iijima, Mariko Hosaka, Nobuo Tanabe, Nobuyuki Sadakata, Takashi Saitoh
  • Patent number: 5995706
    Abstract: To visually display on a monitor screen the direction and volume of a sound source to be inserted in an image, a sound editing apparatus comprises a sound source direction setting unit for setting the sounding direction of a sound source; a sound source signal dividing unit for dividing a monaural sound source signal into left- and right-channel stereo signals according to the sounding direction of the sound source; a display unit for reproducing images from the video medium and displaying the images in which the sounds are to be inserted; and a sound source direction superimposing unit for superimposing a predetermined mark, which indicates the sounding direction, in the video images displayed on the display unit.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: November 30, 1999
    Assignee: Fujitsu Limited
    Inventors: Yasuhiro Iijima, Naohisa Kawaguchi, Kazumi Saito
  • Patent number: 5908507
    Abstract: A chemical vapor deposition (CVD) reactor for forming a film at the surface of a base material, and a production method for an oxide superconductive conductor using this CVD reactor, are disclosed. The CVD reactor is provided with a processing chamber, a material gas supply mechanism which supplies material gas into the processing chamber, and a gas exhaust mechanism which vents gas from inside the processing chamber. The processing chamber is divided by partitions into a base material introduction section, a reaction chamber, and a base material guide-out section. A base material transit opening is formed in each partition, and a base material conveyance region is formed inside the reaction chamber passing through the base material introduction section, the reaction chamber and the base material guide-out section. The material gas supply mechanism is provided with a material gas supply source and a gas disperser and is connected to the material gas supply source.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: June 1, 1999
    Assignees: Fujikura Ltd., Chubu Electric Power Company Inc.
    Inventors: Kazunori Onabe, Nobuyuki Sadakata, Takashi Saito, Osamu Kohno, Taichi Yamaguchi, Yasuhiro Iijima, Shigeo Nagaya, Naoki Hirano
  • Patent number: 5732164
    Abstract: Processing a moving image such that, after an input video signal is supplied to an image inputter, the image inputter time-divisionally converts the input video signal to a digital signal and outputs a control signal such as a vertical synchronous signal. A multiplexer reads image data converted by the image inputter into the digital signal and stores them into a plurality of temporary storers unique for frames according to the control signal from the image inputter. The plurality of temporary storers are respectively connected with a plurality of processor elements which process the memory contents of the plurality of temporary storers and re-store the processing results back in the plurality of temporary storers. A multiplexer sequentially retrieves the memory contents from the plurality of temporary storers, and has an image outputter for converting a digital signal to a video signal output them.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: March 24, 1998
    Assignee: Fujitsu Limited
    Inventors: Naohisa Kawaguchi, Yasuhiro Iijima, Kazumi Saito
  • Patent number: 5650378
    Abstract: The present invention relates to a polycrystalline thin film deposit acting as a substrate material composed of grains of a cubic structure in which the intergranular misorientation, defined as the orientation difference between the a-axes (or b-axes) of the neighboring grains, is less than 30 degrees. Such a substrate base is produced by depositing a target material on a base material by sputtering while irradiating the substrate base with ion beams at an oblique angle to the base. The preferred range of the oblique angle is between 40 to 60 degrees. Examples are presented of application of such textured polycrystalline substrate base for the production of superconducting oxide thin layer of outstanding superconducting properties.
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: July 22, 1997
    Assignee: Fujikura Ltd.
    Inventors: Yasuhiro Iijima, Nobuo Tanabe