Patents by Inventor Hideki Yoshikawa

Hideki Yoshikawa 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: 20020117746
    Abstract: In a composite device of the laminate type having a laminate structure of a composite ceramic layer 3 and a dielectric ceramic layer 2, the composite ceramic layer 3 comprises a layer portion 31 having the same composition as the dielectric ceramic layer 2 and a plurality of strip portions 32 formed on the surface of the layer portion 31. The strip portions 32 are made from magnetic ceramic material. This prevents the ceramic layers of the device from cracking and separating when fired.
    Type: Application
    Filed: February 12, 2002
    Publication date: August 29, 2002
    Inventors: Hideki Yoshikawa, Takashi Umemoto, Hitoshi Hirano
  • Publication number: 20020114932
    Abstract: A composite multilayered ceramic board includes a multilayered ceramic board made of dielectric ceramics, a multilayered ceramic board made of magnetic ceramics and an adhesive layer made of thermosetting resin such as polyimide and the like. In this composite multilayered ceramic board, the dielectric multilayered ceramic board and the magnetic multilayered ceramic board are joined through the adhesive layer.
    Type: Application
    Filed: December 28, 2001
    Publication date: August 22, 2002
    Inventors: Hideki Yoshikawa, Seiichirou Takahashi
  • Publication number: 20020015006
    Abstract: A method and apparatus for displaying three-dimensional CT (Computed Tomography) data as a combination of three sectional images defined by an X-section, a Y-section and a Z-section orthogonalizing each other and the recoding medium saving a program for realizing the method are disclosed together. According to the method, when a cursor on one of the three sectional images is moved, another sectional image sequentially changed corresponding to a movement of the cursor.
    Type: Application
    Filed: April 27, 2001
    Publication date: February 7, 2002
    Inventors: Masakazu Suzuki, Hideki Yoshikawa
  • Patent number: 6219401
    Abstract: The panoramic radiographic apparatus of the present invention has a cassette holder capable of accommodating both a conventional film cassette and a digital sensor cassette loaded with an electric X-ray image detector, one at a time, in a rotary arm, wherein when a film cassette is mounted, the cassette holder is mechanically moved in accordance with the rotation of the rotary arm so as to carry out panoramic radiographing, and when a digital sensor cassette is mounted, without moving the cassette holder, the electric X-ray image detector is driven by supplying control signals corresponding to the rotation of the rotary arm to the digital sensor cassette to obtain image signals required for generating a panoramic X-ray image. Therefore, both the film cassette and the digital sensor cassette can easily be mounted, one at a time, whereby required panoramic X-ray images can be obtained by fully using the features of each type of cassette.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: April 17, 2001
    Assignee: Kabushiki Kaisha Morita Seisakusho
    Inventors: Akifumi Tachibana, Takeshi Hayashi, Masakazu Suzuki, Junichi Furukawa, Yutaka Ito, Masaya Tatsumi, Hideki Yoshikawa
  • Patent number: 6197674
    Abstract: A method of forming a CVD-Ti film includes the steps of loading a Si wafer into a chamber, setting an interior of the chamber at a predetermined reduced-pressure atmosphere, introducing TiCl4 gas, H2 gas, and Ar gas into the chamber, and generating a plasma of the introduced gas in the chamber to form a Ti film in a hole formed in an SiO2 film on the wafer. A wafer temperature is set to 400° to 800°, a supplied power is set to 100 W to 300 W, an internal chamber pressure is set to 0.5 Torr to 3.0 Torr, a flow rate ratio of TiCl4 gas to a sum of H2 gas and Ar gas is 1:100 to 1:300, and a flow rate ratio of H2 gas to Ar gas is 1:1 to 2:1.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: March 6, 2001
    Assignee: Tokyo Electron Limited
    Inventors: Hideki Yoshikawa, Yasuo Kobayashi, Kunihiro Tada
  • Patent number: 6173035
    Abstract: The panoramic radiographic apparatus of the present invention has a cassette holder capable of accommodating both a conventional film cassette and a digital sensor cassette loaded with an electric X-ray image detector, one at a time, in a rotary arm, wherein when a film cassette is mounted, the cassette holder is mechanically moved in accordance with the rotation of the rotary arm so as to carry out panoramic radiographing, and when a digital sensor cassette is mounted, without moving the cassette holder, the electric X-ray image detector is driven by supplying control signals corresponding to the rotation of the rotary arm to the digital sensor cassette to obtain image signals required for generating a panoramic X-ray image. Therefore, both the film cassette and the digital sensor cassette can easily be mounted, one at a time, whereby required panoramic X-ray images can be obtained by fully using the features of each type of cassette.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: January 9, 2001
    Assignee: Kabushiki Kaisha Morita Seisakusho
    Inventors: Akifumi Tachibana, Takeshi Hayashi, Masakazu Suzuki, Junichi Furukawa, Yutaka Ito, Hideki Yoshikawa
  • Patent number: 6051281
    Abstract: A method of forming a titanium film and a titanium nitride film on a substrate by lamination which method is capable of suppressing contamination of the substrate due to the by-product and of reducing a contact resistance value of the titanium film. By carrying out the step of forming a titanium film on a surface of a substrate, the step of subjecting the substrate to the plasma processing in an atmosphere of the mixed gas of nitrogen gas and hydrogen gas, thereby nitriding a surface layer of the titanium film to form thereon a nitride layer, and the step of forming a barrier film (e.g., a titanium nitride film) on the titanium film having the nitride layer formed thereon, both the titanium film and the titanium nitride film are formed on the substrate by lamination.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: April 18, 2000
    Assignee: Tokyo Electron Limited
    Inventors: Yasuo Kobayashi, Kunihiro Tada, Hideki Yoshikawa
  • Patent number: 6030119
    Abstract: An X-ray detecting element detects an image produced by X-ray irradiation. An apparatus case capable of being inserted into a mouth has an X-ray irradiation face having different dimensions in two directions perpendicular to each other, and houses the X-ray detecting element. A cable is connected to the apparatus case to transmit a signal from the X-ray detecting element to the outside of the apparatus case. The cable is drawn out from the apparatus case in a direction which is parallel with the X-ray irradiation face and perpendicular to the longitudinal direction of the X-ray irradiation face. According to this configuration, the cable does not obstruct the imaging operation in a course of imaging teeth in a mouth, particularly a molar portion. Therefore, an imaging operation can be easily conducted without giving the subject an unpleasant feeling.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: February 29, 2000
    Assignees: J. Morita Manufacturing Corporation, Hamamatsu Photonics Kabushiki Kaisha
    Inventors: Akifumi Tachibana, Masakazu Suzuki, Hideki Yoshikawa, Susumu Kirimura, Tetsuhiko Muraki, Hitoshi Asai, Kazuhisa Miyaguchi
  • Patent number: 5377063
    Abstract: A floating head slider comprising two side rails formed on a surface thereof to be opposed to a recording medium and arranged approximately in parallel to the direction of movement of the slider relative to the recording medium, and a cross rail formed on the surface and disposed between the two side rails. The cross rail is divided into a first portion and a second portion by an opening groove, which is defined by opposite side walls so inclined that an air outlet of the opening groove is smaller than an air inlet thereof.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: December 27, 1994
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yoshinobu Taniguchi, Hideki Yoshikawa, Isao Yasuda
  • Patent number: 4774755
    Abstract: A magnetic head which comprises a pair of head chips each composed of a pair of plate-like magnetic cores superposed on and joined to each other with a spacer interposed therebetween and having a gap at the junction, a pair of base plates joined to the pair of head chips individually and positioned on opposite sides of and in parallel to a plane containing the gaps, each of the magnetic core having at one end thereof a head with a small width substantially equal to the width of tacks and an end portion of increased width opposite to the head, a shield member interposed between the head chips at the head portions, a stud portion provided on at least one of the pair of magnetic cores and projecting toward the other core, and a coil provided around the stud portion. A process for producing such magnetic heads wherein the pair of magnetic cores are positioned close to each other, and the gaps are accurately positioned on the same plane.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: October 4, 1988
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yorinobu Yoshisato, Hideki Yoshikawa, Kazuhiko Taketa, Isao Yasuda, Kenji Kubota, Kazuhiko Takahashi
  • Patent number: 4769899
    Abstract: A twin head for use in an electronic still camera includes a shield plate, first and second head chips bonded on opposite sides of the shield plate, and first and second reinforcing core members further bonded on first and second head chips, respectively. Each of the first and second head chip members has an elongated face that faces a recording medium and a magnetic gap defined at an intermediate portion of the elongated face. The length Wh of the elongated face is between 0.3 millimeter and 1 millimeter. Each of the first and second reinforcing core members has a coil wound thereon. The first and second head chip members, the shield plate, and the first and second reinforcing core members are bonded together such that the elongated faces of the first and second head chip members are in flush with each other and that the magnetic gaps of the first and second head chip members are aligned to each other.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: September 13, 1988
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Isao Yasuda, Yorinobu Yoshisato, Hideki Yoshikawa, Kazuhiko Taketa
  • Patent number: 4719527
    Abstract: A magnetic head which comprises a pair of head chips each composed of a pair of plate-like magnetic cores superposed on and joined to each other with a spacer interposed therebetween and having a gap at the junction, a pair of base plates joined to the pair of head chips individually and positioned on opposite sides of and in parallel to a plane containing the gaps, each of the magnetic core having at one end thereof a head with a small width substantially equal to the width of tracks and an end portion of increased width opposite to the head, a shield member interposed between the head chips at the head portions, a stud portion provided on at least one of the pair of magnetic cores and projecting toward the other core, and a coil provided around the stud portion. A process is also disclosed for producing such magnetic heads wherein the pair of magnetic cores are positioned close to each other, and the gaps are accurately positioned on the same plane.
    Type: Grant
    Filed: October 30, 1985
    Date of Patent: January 12, 1988
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yorinobu Yoshisato, Hideki Yoshikawa, Kazuhiko Taketa, Isao Yasuda, Kenji Kubota, Kazuhiko Takahashi
  • Patent number: 4713709
    Abstract: A twin head for use in an electronic still camera includes a shield plate, first and second head chips bonded on opposite sides of the shield plate, and first and second reinforcing core members further bonded on first and second head chips, respectively. Each of the first and second head chip members has an elongated face that faces a recording medium and a magnetic gap defined at an intermediate portion of the elongated face. The length Wh of the elongated face is between 0.3 millimeter and 1 millimeter. Each of the first and second reinforcing core members has a coil wound thereon. The first and second head chip members, the shield plate, and the first and second reinforcing core members are bonded together such that the elongated faces of the first and second head chip members are in flush with each other and that the magnetic gaps of the first and second head chip members are aligned to each other.
    Type: Grant
    Filed: July 31, 1985
    Date of Patent: December 15, 1987
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Isao Yasuda, Yorinobu Yoshisato, Hideki Yoshikawa, Kazuhiko Taketa