Patents by Inventor Kohki Iwata

Kohki Iwata 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: 7920890
    Abstract: A transmission power increasing section continuously transmits, from a testing instrument to a mobile communication terminal at predetermined intervals, a transmission power increasing request for increasing transmission power of the mobile communication terminal by a predetermined quantity. A block size extracting section extracts, from a predetermined second physical channel, block size information indicating a block size of transmittable data defined in association with the maximum transmission power set at a first physical channel upon receipt of a plurality of physical channels from the mobile communication terminal for each transmission of the transmission power increasing request. A storage section stores, at least one time, block size information extracted at the block size extracting section.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: April 5, 2011
    Assignee: Anritsu Corporation
    Inventor: Kohki Iwata
  • Publication number: 20080227479
    Abstract: A transmission power increasing section continuously transmits, from a testing instrument to a mobile communication terminal at predetermined intervals, a transmission power increasing request for increasing transmission power of the mobile communication terminal by a predetermined quantity. A block size extracting section extracts, from a predetermined second physical channel, block size information indicating a block size of transmittable data defined in association with the maximum transmission power set at a first physical channel upon receipt of a plurality of physical channels from the mobile communication terminal for each transmission of the transmission power increasing request. A storage section stores, at least one time, block size information extracted at the block size extracting section.
    Type: Application
    Filed: May 12, 2008
    Publication date: September 18, 2008
    Applicant: Anritsu Corporation
    Inventor: Kohki Iwata
  • Patent number: 4354474
    Abstract: In a distribution type fuel injection system, the fuel injection advance angle, or the relative angular position at which fuel injection begins, is controlled by a first spring loaded piston (44). The spring force is opposed by pressurized fuel from a pump (14), the pressure increasing with engine speed. A second spring loaded piston (49) moves the first piston (44) to an advanced position for starting the engine and is retracted when the fuel pressure reaches a certain value to subsequently retard the advance angle in an idling speed range. The fuel pressure moves the first piston (44) to progressively advance the angle in a higher speed range. An electromagnetic valve (62) is controlled to trap fuel and apply a hydraulic lock to the second piston (49) during starting of the engine to prevent retarding of the advance angle until the engine speed or coolant temperature reaches a predetermined value.
    Type: Grant
    Filed: July 24, 1979
    Date of Patent: October 19, 1982
    Assignee: Diesel Kiki Company, Ltd.
    Inventors: Masayoshi Kobayashi, Toru Sakuranaka, Keiichi Yamada, Masayasu Hayakawa, Sachio Nakagawa, Kohki Iwata, Ryuichi Komori
  • Patent number: 4225027
    Abstract: Rotary input and output members (19), (28) are axially aligned with each other and a rotary clutch disc (32) is axially aligned with and frictionally engageable with the input member (19). A coil-wound spring (33) is wound around the input and output members (19), (28) and connected at its ends to the clutch disc (32) and output member (28) respectively. An electromagnetic coil (26), which energized, attracts the clutch disc (32) into frictional engagement with the input member (19) and causes the coil-wound spring (33) to tightly wind around and embrace the input and output members (19), (28), thereby drivingly connecting the same together.
    Type: Grant
    Filed: September 14, 1978
    Date of Patent: September 30, 1980
    Assignee: Diesel Kiki Co., Ltd.
    Inventors: Hideyasu Takefuta, Kohki Iwata, Toshio Yamaguchi