Patents by Inventor Katsumi Furukawa

Katsumi Furukawa 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: 8742786
    Abstract: A semiconductor device includes a monitor including a first element coupled between a first power supply line and a second power supply line, and a load for increasing a load value between the first element and the first power supply line or the second power supply line, and a determination unit which determines an operating state of the first element based on an output of the monitor.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: June 3, 2014
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Kazufumi Komura, Katsumi Furukawa, Keiichi Fujimura, Takayoshi Nakamura, Tohru Yasuda, Hirohisa Nishiyama, Nobuyoshi Nakaya, Kanta Yamamoto, Shigetaka Asano
  • Publication number: 20090243627
    Abstract: A semiconductor device includes a monitor including a first element coupled between a first power supply line and a second power supply line, and a load for increasing a load value between the first element and the first power supply line or the second power supply line, and a determination unit which determines an operating state of the first element based on an output of the monitor.
    Type: Application
    Filed: March 24, 2009
    Publication date: October 1, 2009
    Applicant: FUJITSU MICROELECTRONICS LIMITED
    Inventors: Kazufumi KOMURA, Katsumi Furukawa, Keiichi Fujimura, Takayoshi Nakamura, Tohru Yasuda, Hirohisa Nishiyama, Nobuyoshi Nakaya, Kanta Yamamoto, Shigetaka Asano
  • Patent number: 7445388
    Abstract: A bearing assembly is proposed which includes a rotational speed detector including a sensor and a sensor holder made of steel. The sensor is adapted to be snap-fitted in the sensor holder. The sensor holder is subjected to cationic electrocoating to improve its corrosion resistance, thereby preventing the sensor from separating from the sensor holder after long use of the bearing assembly. This improves the reliability of the entire bearing assembly.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: November 4, 2008
    Assignee: NTN Corporation
    Inventors: Kazuhisa Shigeoka, Katsumi Furukawa
  • Patent number: 7374344
    Abstract: To provide a wheel support bearing assembly designed to avoid an ingress of foreign matter from an area, where a sensor is fitted, into the inside of the bearing assembly. The wheel support bearing assembly includes an outer member (1) adapted to be secured to a vehicle body structure, an inner member (2) adapted to support a vehicle wheel, and circular rows of rolling elements (3) interposed between the outer and inner members (1,2). A sensor cap (13) is provided for closing an inboard end of the outer member (1) and has an insert nut (15) embedded therein. The sensor cap (13) is also provided with a reduced diameter hole (23), in which an elastic sealing member (25) is interposed under interference fit between it and a deep end face of the insert nut (15).
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: May 20, 2008
    Assignee: NTN Corporation
    Inventors: Kazuhisa Shigeoka, Katsumi Furukawa
  • Publication number: 20070031076
    Abstract: A bearing assembly is proposed which includes a rotational speed detector including a sensor and a sensor holder made of steel. The sensor is adapted to be snap-fitted in the sensor holder. The sensor holder is subjected to cationic electrocoating to improve its corrosion resistance, thereby preventing the sensor from separating from the sensor holder after long use of the bearing assembly. This improves the reliability of the entire bearing assembly.
    Type: Application
    Filed: January 4, 2006
    Publication date: February 8, 2007
    Inventors: Kazuhisa Shigeoka, Katsumi Furukawa
  • Publication number: 20060159377
    Abstract: To provide a wheel support bearing assembly designed to avoid an ingress of foreign matter from an area, where a sensor is fitted, into the inside of the bearing assembly. The wheel support bearing assembly includes an outer member (1) adapted to be secured to a vehicle body structure, an inner member (2) adapted to support a vehicle wheel, and circular rows of rolling elements (3) interposed between the outer and inner members (1,2). A sensor cap (13) is provided for closing an inboard end of the outer member (1) and has an insert nut (15) embedded therein. The sensor cap (13) is also provided with a reduced diameter hole (23), in which an elastic sealing member (25) is interposed under interference fit between it and a deep end face of the insert nut (15).
    Type: Application
    Filed: January 9, 2006
    Publication date: July 20, 2006
    Applicant: NTN CORPORATION
    Inventors: Kazuhisa Shigeoka, Katsumi Furukawa
  • Patent number: 6382016
    Abstract: An inspection device is provided for inspecting whether the gap between the front and rear sides of a grommet is watertightly sealed. The inspection device includes a cylindrical member (10) into which electric wires (4) projected from a front end of a grommet (3) are inserted and a sealing means (11) for sealing the cylindrical member. Air is supplied into the cylindrical member (10). When the air flow stops due to pressurization of the cylindrical member (10), it is determined that the grommet (3) has passed an examination. Thus, it is possible to detect the gap between the electric wires (4) with high accuracy.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: May 7, 2002
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Yoshihiro Araki, Katsumi Furukawa, Yoshitsugu Fujita
  • Patent number: 6126322
    Abstract: A muddy-water-proofed vehicle wheel supporting structure for mounting a wheel through a double-row tapered roller bearing on an end of an axle comprises a seal member interposed between a shoulder of the axle and a part constituting a sealing device, for example, a seal slinger, fitted to one of a pair of inner rings of the bearing that is brought into contact with the shoulder.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: October 3, 2000
    Assignee: NTN Corporation
    Inventors: Hisashi Otsuki, Katsumi Furukawa