Patents by Inventor Shingo Iwai

Shingo Iwai 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: 20210020551
    Abstract: In a power semiconductor device, power semiconductor elements are mounted on a large die pad and the like. The large die pad is joined to a power lead via a lead stepped portion. The large die pad has a first end portion and a second end portion located with a distance therebetween in the X axis direction. In the Y axis direction, the lead stepped portion is joined to the first end portion side relative to a central line between the first end portion and the second end portion. The large die pad is inclined such that a distance between the large die pad and the first main surface of the molding resin is longer from the first end portion toward the second end portion.
    Type: Application
    Filed: April 19, 2019
    Publication date: January 21, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takamasa IWAI, Shingo SUDO, Yuichiro SUZUKI
  • Publication number: 20200140710
    Abstract: A metal ink containing metal particles including silver, a protective agent A including an amine compound, and a protective agent B including a fatty acid. The metal ink is configured such that the protective agent A includes at least one C4-12 amine compound, and the protective agent B includes at least one C22-26 fatty acid. It is preferable that the amine compound content is 0.2 mmol/g or more and 1.5 mmol/g or less on a silver particle mass basis. In addition, it is preferable that the fatty acid content is 0.01 mmol/g or more and 0.06 mmol/g or less on a silver particle mass basis.
    Type: Application
    Filed: August 1, 2018
    Publication date: May 7, 2020
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Yuusuke OHSHIMA, Yuichi MAKITA, Teruhisa IWAI, Hitoshi KUBO, Shigeki YAMANAKA, Masahiro ITO, Shingo WATANABE
  • Publication number: 20110282561
    Abstract: An ECU (13) includes: throttle-valve opening-degree control means (131) for controlling an intake airflow rate; target output-torque calculating means (132) for calculating a target output torque from an operating state of an engine (1) and an operation of an accelerator performed by a driver; target ignition-timing calculating means (133) for calculating target ignition timing based on the operating state of the engine (1); actual output-torque calculating means (134) for calculating an actual output torque of the engine (1) based on an engine rpm, a charging efficiency, the target ignition timing, an air-fuel ratio, and a total heating value of a fuel; and target intake-air quantity calculating means (135) for calculating a charging efficiency-to-torque conversion factor based on the charging efficiency and the actual output torque, and calculating a target charging efficiency based on the target output torque and the charging efficiency-to-torque conversion factor to calculate a target intake air quantity
    Type: Application
    Filed: March 4, 2009
    Publication date: November 17, 2011
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tateki Mitani, Hideki Hagari, Shingo Iwai, Satoshi Nishikawa
  • Publication number: 20110166771
    Abstract: A fuel control system of the present invention is a fuel control system that controls a fuel injection quantity of an internal combustion engine by controlling combustion of a fuel at a theoretical air-fuel ratio, and is characterized in that the fuel control system estimates a volume of the fuel injection quantity from a measured refractive-index value of the fuel and controls it.
    Type: Application
    Filed: October 29, 2008
    Publication date: July 7, 2011
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tateki Mitani, Satoshi Nishikawa, Shingo Iwai
  • Publication number: 20110050179
    Abstract: An idle stop control device for determining on the basis of a charging state of a battery whether idle stop should be executed or not includes, as a unit for detecting the charge state of the battery, an optical fiber type battery solution concentration sensor including an optical fiber which is partially immersed in battery solution to measure the refractive index of the battery solution, thereby measuring the concentration of the battery solution.
    Type: Application
    Filed: January 14, 2010
    Publication date: March 3, 2011
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tateki MITANI, Shigeki KONDO, Satoshi NISHIKAWA, Shingo IWAI
  • Publication number: 20010027779
    Abstract: A fuel supply apparatus comprising a housing 10a made of a molded polymer material and containing therein a filter element 8 of a fuel filter 10 for filtering the fuel from the fuel pump 4.b and a supply passage 12 for introducing the filtered fuel from the fuel filter 10 to an engine. A pressure regulator 9 is provided for opening a valve 13 when the fuel pressure within the supply passage 12 is equal to or more than a predetermined pressure to return an excess amount of the fuel to the fuel tank 1 for regulating the fuel pressure within the supply passage 12. A a check valve 13 is also integrally incorporated in the supply passage 12 for preventing the reverse flow of the fuel from the engine.
    Type: Application
    Filed: September 17, 1998
    Publication date: October 11, 2001
    Inventors: SHINGO IWAI, SEIJI TSUTSUI
  • Patent number: 5655504
    Abstract: A pressure regulator includes a case having a fuel inlet port for receiving fuel from a fuel pump, a fuel outlet port for delivering fuel to an internal combustion engine, and an opening. A valve element is attached to an elastic diaphragm that closes the opening. The valve element has a discharge passage for discharging excess fuel by allowing the interior and the exterior of the case partitioned by the elastic diaphram to communicate with each other. A spring seat is provided in the case in face-to-face relation to the valve element in such a manner as to close the discharge passage of the valve element during pressure contact. A spring is also provided for bringing the valve element into pressure contact with the valve seat with a predetermined pressure.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: August 12, 1997
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Shingo Iwai
  • Patent number: 5375970
    Abstract: A circumferential flow type liquid pump has, and a pump casing including a pump base and a pump cover. The pump casing rotatably supports an impeller and defines an elongated arcuate pump flow path along the outer periphery of the impeller and a suction inlet and a discharge outlet at both ends of the pump flow path. A plurality of gas venting holes are formed in a sliding surface of the pump cover along the pump flow path and communicate with the outside of the pump. Bubbles formed in the fuel in the pump flow path are positively discharged out of the pump casing assembly, and no vapor lock is caused.
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: December 27, 1994
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shingo Iwai, Hiroshi Yoshioka
  • Patent number: 5221178
    Abstract: A circumferential flow type liquid pump includes an impeller with vanes on its outer periphery, and a pump casing assembly defining an arcuate elongated pump flow path along the outer periphery of the impeller and a suction inlet and a discharge outlet at both ends of the pump flow path. The pump casing assembly includes a radially-extending gas venting path which is opened in the inner periphery of the pump flow path near the impeller and separated by a step from the bottom of the pump flow path, and a through-hole much larger in sectional area than the gas venting path, through which the gas venting path is communicated with the outside of the pump casing assembly. Bubbles formed by vaporization of the fuel in the pump flow path are positively discharged from the pump casing assembly, and no vapor locking is caused.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: June 22, 1993
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroshi Yoshioka, Shingo Iwai
  • Patent number: 5174713
    Abstract: A circumferential flow type fuel pump has an impeller rotated by engagement between a hole in the impeller and a rotating shaft having a diameter smaller than that of the hole. The center ofthe hole is eccentric with respect to the center of the impeller in accordance with the difference between the diameter of the hole and the diameter in section of the rotating shaft, so that the center of the impeller coincides with the center of the rotating shaft during rotation of the impeller.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: December 29, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shingo Iwai, Hiroshi Yoshioka
  • Patent number: 5160249
    Abstract: A circumferential flow type fuel pump has a circumferential fuel flow passage provided around an impeller and a gas discharging hole formed in the inner wall of the fuel flow passage in such a manner that the fuel flow passage is communicated with the outside of the fuel pump. The upstream and portion of the fuel flow passage extends to a position near the gas discharging hole and is formed into a flow passage enlarging part by increasing its sectional area radially outwardly, whereby the pumping capacity is substantially maintained unchanged even under severe operation conditions such as at a high fuel temperature.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: November 3, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shingo Iwai, Hiroshi Yoshioka
  • Patent number: 5088900
    Abstract: A motor-operated pump of the in-tank type including a motor for driving the pump, the motor having a commutator; a bracket covering one end of the motor disposed adjacent to the commutator; a brush held against the commutator through a through hole formed in the bracket; and a bearing for supporting a shaft of the motor. An annular projection is formed on a central portion of a surface of bracket disposed in opposed relation to the commutator, and the annular projection is formed integrally with the bracket. Alternatively, an annular projection is formed on a central portion of the commutator disposed in opposed relation to the bearing, and the annular projection is made of an electrically insulating material constituting the commutator, and is formed integrally with the commutator.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: February 18, 1992
    Assignee: Mitsubishi Denki K.K.
    Inventors: Hiroshi Yoshioka, Shingo Iwai
  • Patent number: 5081386
    Abstract: A motor-operated pump of the in-tank type has a driving motor with a commutator; a bracket covering one end of the motor adjacent to the commutator; a brush held against the commutator through a through hole formed in the bracket; an electrical noiseprevention element in a bottomed hole formed in the bracket, and electrically connected to the brush; and a terminal electrically connected to the electrical noiseprevention element. A brush spring-holder plate is fitted in the bracket for holding a brush spring urging the brush. An outer cover is fitted on the bracket for covering the bracket and the brush spring-holder plate.
    Type: Grant
    Filed: August 28, 1990
    Date of Patent: January 14, 1992
    Assignee: Mitsubishi Denki K.K.
    Inventor: Shingo Iwai
  • Patent number: 5064342
    Abstract: In an in-tank type motor-operated pump, a pair of electric-noise suppressors (20) are contained in a pair of holes (22e) formed in a bracket (22) which holds brushes (4) and a rotor shaft (5), thereby incorporating the electric-noise suppressors in a body of the pump with the shortest connection wirings and without substantial increase of overall volume of the pump.
    Type: Grant
    Filed: April 18, 1990
    Date of Patent: November 12, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Shingo Iwai
  • Patent number: 5040954
    Abstract: In an in-tank type motor-operated pump having a brush motor (1), a bearing (15) for rotatably holding a rotor shaft (5) is covered with a heat resistant insulating material (25) and is mounted in a bracket (22) in which brushes (4) are slidably held, thereby preventing an accidental shortcircuit between brushes (4) via the bearing (15) at the time when the bracket (22) melts with heat.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: August 20, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Shingo Iwai
  • Patent number: 4904162
    Abstract: A fuel supplying pump having a switching circuit provided in the pump closing. The switching circuit stops the pump when an engine stops rotating due, for instance, to a fuel pipe breakage. The circuit having a transistor with a base connected to an oil pressure responsive switch.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: February 27, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Ryozo Suzuki, Jun Shiraga, Shingo Iwai, Tetsuo Okashiro
  • Patent number: 4822258
    Abstract: An in-tank type fuel pump in which an impeller within the pump chamber is rotated by a motor disposed within a fuel chamber within a main body to pump fuel. A through hole in communication with a fuel chamber of the motor portion is provided in a side wall of the pump chamber on the motor side close to the upstream end of the annular channel defining the fuel chamber of the motor portion.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: April 18, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takashi Matsuda, Ryozo Suzuki, Shingo Iwai, Ryoji Ikeda
  • Patent number: D331239
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: November 24, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Shingo Iwai
  • Patent number: D332266
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: January 5, 1993
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shingo Iwai, Hiroshi Yoshioka
  • Patent number: D332267
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: January 5, 1993
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Shingo Iwai