Patents by Inventor Takashi Marukawa

Takashi Marukawa 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: 20240131929
    Abstract: For a vehicle interior compartment defined by a vehicle floor, opposing sidewalls, a forward end and a rearward end, and a vehicle ceiling covering at least part of the compartment, an end zone overhead display structure includes bulkhead forming attachment elements coupled to a roof strut spanning from sidewall to sidewall of the vehicle roof. The display structure includes an open box-like upper bracket and an open box-like lower bracket coupled together with the roof strut interposed to provide an assembly that reduces unwanted motion, rotation or vibration of the display assembly.
    Type: Application
    Filed: October 24, 2022
    Publication date: April 25, 2024
    Inventors: Kohei INOUE, Patrick J. ELLISON, Taiga MARUKAWA, Kosaku TOMOZAWA, Akira FUTATSUHASHI, Takashi NAKANO, Jagpaul S. PANDHER, Tsuyoshi HIGUCHI
  • Patent number: 7112913
    Abstract: A method for manufacturing a surface acoustic wave apparatus to be mounted via bumps by a flip chip bonding system prevents peeling of electrode pads from the piezoelectric substrate and cracks in the piezoelectric substrate from occurring during the formation of the bumps or at other times during the manufacturing process. In the method of manufacturing a surface acoustic wave apparatus, a first electrode layer of the electrode pad is formed on a piezoelectric substrate by etching, an electrode for a surface acoustic wave element is formed by a lift-off method after the first electrode layer is formed, and thereafter, an electrode film including a second electrode layer of the electrode pad and a wiring electrode is formed.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: September 26, 2006
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kazunobu Shimoe, Shuji Yamato, Takashi Marukawa
  • Patent number: 6792656
    Abstract: A method for manufacturing a surface acoustic wave apparatus to be mounted via bumps by a flip chip bonding system prevents peeling of electrode pads from the piezoelectric substrate and cracks in the piezoelectric substrate from occurring during the formation of the bumps or at other times during the manufacturing process. In the method of manufacturing a surface acoustic wave apparatus, a first electrode layer of the electrode pad is formed on a piezoelectric substrate by etching, an electrode for a surface acoustic wave element is formed by a lift-off method after the first electrode layer is formed, and thereafter, an electrode film including a second electrode layer of the electrode pad and a wiring electrode is formed.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: September 21, 2004
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kazunobu Shimoe, Shuji Yamato, Takashi Marukawa
  • Publication number: 20040178698
    Abstract: A method for manufacturing a surface acoustic wave apparatus to be mounted via bumps by a flip chip bonding system prevents peeling of electrode pads from the piezoelectric substrate and cracks in the piezoelectric substrate from occurring during the formation of the bumps or at other times during the manufacturing process. In the method of manufacturing a surface acoustic wave apparatus, a first electrode layer of the electrode pad is formed on a piezoelectric substrate by etching, an electrode for a surface acoustic wave element is formed by a lift-off method after the first electrode layer is formed, and thereafter, an electrode film including a second electrode layer of the electrode pad and a wiring electrode is formed.
    Type: Application
    Filed: March 23, 2004
    Publication date: September 16, 2004
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Kazunobu Shimoe, Shuji Yamato, Takashi Marukawa
  • Patent number: 6458675
    Abstract: A semiconductor device includes: a semiconductor substrate; an active layer; and a plasma-processed layer provided between the semiconductor substrate and the active layer. The plasma-processed layer has a deep level. First and second electrodes are electrically connected by ohmic contact with first and second portions of the active layer, respectively. The first and second portions are spaced apart at a predetermined interval from each other. A third electrode is formed on a third respective portion of the active layer and is located between the first and second portions of the active layer.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: October 1, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Takashi Marukawa
  • Publication number: 20020121841
    Abstract: A method for manufacturing a surface acoustic wave apparatus to be mounted via bumps by a flip chip bonding system prevents peeling of electrode pads from the piezoelectric substrate and cracks in the piezoelectric substrate from occurring during the formation of the bumps or at other times during the manufacturing process. In the method of manufacturing a surface acoustic wave apparatus, a first electrode layer of the electrode pad is formed on a piezoelectric substrate by etching, an electrode for a surface acoustic wave element is formed by a lift-off method after the first electrode layer is formed, and thereafter, an electrode film including a second electrode layer of the electrode pad and a wiring electrode is formed.
    Type: Application
    Filed: December 26, 2001
    Publication date: September 5, 2002
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Kazunobu Shimoe, Shuji Yamato, Takashi Marukawa
  • Patent number: 5627090
    Abstract: There is provided a semiconductor element having a Schottky electrode which forms a Schottky junction with an active layer formed on a compound semiconductor substrate characterized in that a modified layer is formed in at least a portion of a region of the active layer on which region the Schottky electrode is formed and a vicinity of that region.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: May 6, 1997
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takashi Marukawa, Hiroyuki Nakano
  • Patent number: 5578844
    Abstract: There is provided a semiconductor element having a Schottky electrode which forms a Schottky junction with an active layer formed on a compound semiconductor substrate characterized in that a modified layer is formed in at least a portion of a region of the active layer on which region the Schottky electrode is formed and a vicinity of that region.
    Type: Grant
    Filed: February 27, 1996
    Date of Patent: November 26, 1996
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takashi Marukawa, Hiroyuki Nakano