Patents by Inventor Koji Yamanaka

Koji Yamanaka 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: 11029098
    Abstract: A device temperature regulator includes a forward passage in which a forward flow passage is formed to cause a working fluid to flow to a heat absorber from a heat radiator, and a backward passage in which a backward flow passage is formed to cause the working fluid to flow to the heat radiator from the heat absorber. In addition, the device temperature regulator includes a bubble generator, which generates a bubble in the working fluid collecting in the heat absorber and having a liquid phase, and a controller that causes the bubble generator to generate the bubble in a precondition is satisfied.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: June 8, 2021
    Assignee: DENSO CORPORATION
    Inventors: Masayuki Takeuchi, Yasumitsu Omi, Takashi Yamanaka, Yoshiki Kato, Takeshi Yoshinori, Koji Miura
  • Patent number: 11004674
    Abstract: Provided are a substrate treatment method and a substrate treatment equipment enabling greater suppression of corrosion or oxidation of metal wiring exposed on a substrate surface. The present invention relates to a substrate treatment equipment having a treatment chamber wherein a substrate is disposed, and whereto a substrate treatment solution for treating the substrate is supplied. This equipment is provided with an inert gas filling mechanism for filling with an inert gas the interior of the treatment chamber wherein the substrate is disposed, and, near or inside the treatment chamber, a catalytic unit filled with a platinum-group metal catalyst wherethrough a hydrogen-dissolved water including hydrogen added to ultra-pure water is passed. Obtained by passing the hydrogen-dissolved water through the platinum-group metal catalyst, a hydrogen-dissolved treatment solution is supplied as the substrate treatment solution into the treatment chamber by the equipment.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: May 11, 2021
    Assignee: ORGANO CORPORATION
    Inventors: Daisaku Yano, Yukinari Yamashita, Masami Murayama, Koji Yamanaka
  • Patent number: 10911003
    Abstract: A Doherty amplifier includes a carrier amplifier, a peaking amplifier, and a phase compensation circuit. The carrier amplifier 11 includes a main amplifying element and a parasitic element, and the peaking amplifier includes an auxiliary amplifying element and a parasitic element. The phase compensation circuit has a negative electrical length that allows a total electrical length of a signal transmission path starting from an output source of the main amplifying element to a power combiner to become 180°×N?90° where N is a positive integer. In addition, a signal transmission path starting from an output source of the auxiliary amplifying element to the power combiner has an electrical length of 180°×M?180° where M is a positive integer.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: February 2, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Keigo Nakatani, Shintaro Shinjo, Koji Yamanaka
  • Publication number: 20210013854
    Abstract: CRLH lines including left-handed shunt inductors and left-handed series capacitors are provided on gate side transmission lines of a plurality of FETs.
    Type: Application
    Filed: September 28, 2020
    Publication date: January 14, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Jun KAMIOKA, Masatake HANGAI, Koji YAMANAKA
  • Publication number: 20210013849
    Abstract: A stub whose end is connected to an end of a transmission line, and a coupled line disposed in parallel with each of the transmission line and the stub, and electromagnetically coupled to each of the transmission line and the stub are included, and the stub and the coupled line operate as a first resonator for resonating with an odd order harmonic included in the amplified signal, and the transmission line, the stub, and the coupled line operate as a second resonator for resonating with an even order harmonic included in the amplified signal.
    Type: Application
    Filed: September 30, 2020
    Publication date: January 14, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takumi SUGITANI, Masatake HANGAI, Koji YAMANAKA
  • Publication number: 20210006208
    Abstract: A conventional Doherty amplifier requires a load modulation line having an electrical length of 90 degrees, a frequency compensation line having an electrical length of an integral (n) multiple of 180 degrees, and an input phase adjustment line having an electrical length corresponding to a difference (180°×n?90°) between the electrical length of the load modulation line and the electrical length of the frequency compensation line. Thus, the conventional Doherty amplifier has a problem of an increase in circuit size.
    Type: Application
    Filed: September 22, 2020
    Publication date: January 7, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shuichi SAKATA, Shintaro SHINJO, Keigo NAKATANI, Koji YAMANAKA
  • Publication number: 20210005535
    Abstract: In a semiconductor device including gate fingers each having a linear shape extending from a feed line, and arranged in areas between drain electrodes and source electrodes, open stubs are connected directly to the feed line.
    Type: Application
    Filed: September 18, 2020
    Publication date: January 7, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yutaro YAMAGUCHI, Masatake HANGAI, Shintaro SHINJO, Koji YAMANAKA
  • Publication number: 20200403401
    Abstract: A switch element is arranged between an input terminal and an output terminal. A signal from the input terminal is distributed by a capacitative element and supplied to the cathode side of a diode. An inductor is connected to the cathode side of the diode, and a smoothing circuit including a capacitative element and a resistor is connected to the anode side. The switch element has a control terminal connected to the anode of the diode, and turns off a path between the input terminal and the output terminal when a voltage is applied to the control terminal.
    Type: Application
    Filed: September 8, 2020
    Publication date: December 24, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takuma TORII, Masatake HANGAI, Koji YAMANAKA, Kazuhiro NISHIDA
  • Publication number: 20200389199
    Abstract: A first inductor is connected to an input terminal through a capacitive element. To the first inductor, an anti-parallel diode pair including a first diode and a second diode, and a second inductor are connected. The first inductor and the anti-parallel diode pair are coupled to each other by an electromagnetic field, thereby forming a coupling capacitance.
    Type: Application
    Filed: August 25, 2020
    Publication date: December 10, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takuma TORII, Masatake HANGAI, Koji YAMANAKA, Kazuhiro NISHIDA
  • Patent number: 10857512
    Abstract: A diluted solution production method of the present invention is a diluted solution production method of producing a diluted solution of a second liquid by adding the second liquid a first liquid, the method including feeding the first liquid to a first pipe; and controlling pressure in a tank that stores the second liquid to add, through the second pipe that connects the tank to the first pipe, the second liquid to the first liquid in the first pipe. Adding the second liquid includes measuring a flow rate of the first liquid or the diluted solution that flows through the first pipe; measuring a component concentration of the diluted solution; and controlling the pressure in the tank, based on the measured values of the flow rate and the component concentration, so as to adjust the component concentration of the diluted solution to a specified value.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: December 8, 2020
    Assignee: ORGANO CORPORATION
    Inventors: Yoshifumi Hayashi, Yukinari Yamashita, Koji Yamanaka, Daisaku Yano
  • Patent number: 10797141
    Abstract: A semiconductor device includes: an underlying substrate; a semiconductor layer formed on the underlying substrate; electrode patterns in which a drain electrode and a source electrode are alternately arranged along an array direction determined in advance, on the semiconductor layer; and a group of gate fingers each having a shape extending in an extending direction which is different from the array direction. Each of the gate fingers is disposed in a region between the drain electrode and the source electrode. Moreover, the gate fingers are arranged at positions displaced from one another in the extending direction.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: October 6, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yutaro Yamaguchi, Masatake Hangai, Koji Yamanaka
  • Patent number: 10777550
    Abstract: A plurality of gate finger electrodes (2) is each arranged in a manner alternately adjacent to a corresponding one of drain electrodes (3) and a corresponding one of source electrode (4). The plurality of gate finger electrodes (2) is each connected to a corresponding one of gate routing lines (6). A resistor (7) has one end separating the gate routing lines (6) on respective two sides at a center portion between the gate routing lines (6), and has another end connected to an input line (10). Capacitors (8) are arranged on the respective two sides with respect to the resistor (7) and each connected to the corresponding gate routing line (6) by a corresponding one of air bridges (9).
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: September 15, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yutaro Yamaguchi, Masatake Hangai, Koji Yamanaka
  • Publication number: 20200284742
    Abstract: Time until a conductivity meter is ready to measure a conductivity after an electric decationizing apparatus starts is shortened. Water to be treated that contains cations and anions is supplied to the electric decationizing apparatus while applying a first voltage to the electric decationizing apparatus, and decationized water is generated. Next, the decationized water that is generated by the electric decationizing apparatus is supplied to the conductivity meter in order to measure conductivity of the decationized water. Before the first voltage is applied to the electric decationizing apparatus and before the conductivity meter begins measuring the conductivity of the decationized water, a second voltage that is lower than the first voltage is applied to the electric decationizing apparatus in a state in which the electric decationizing apparatus is charged with water to be treated.
    Type: Application
    Filed: August 2, 2018
    Publication date: September 10, 2020
    Applicant: ORGANO CORPORATION
    Inventors: Chika KEMMOCHI, Koji YAMANAKA
  • Patent number: 10763797
    Abstract: A high-frequency power amplifier is configured to include plural island patterns (28) in which ends thereof are arranged in the vicinity of a transmission line (23) and other ends thereof are arranged in the vicinity of an end line (24a) in a transmission line (24), a wire (30) for connecting an end of an island pattern (28) and the transmission line (23), and a wire (31) for connecting another end of the island pattern (28) and the end line (24a) of the second transmission line (24), so that a mismatch of the impedance component having a resistance component and a reactance component can be compensated for by changing the number of first connecting members and the number of second connecting members, the first and second connecting members configured to connect an island pattern (28) to the transmission lines (23) and (24).
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: September 1, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takaaki Yoshioka, Masatake Hangai, Koji Yamanaka
  • Patent number: 10748860
    Abstract: Parallel inductors include a first metal wire (8a or 8b) for connecting a drain terminal (2) and a first metal pattern (7a or 7b), and a second metal wire (10a or 10b) for connecting the first metal pattern (7a or 7b) and a second metal pattern (9a or 9b). The second metal wires (10a and 10b) are each positioned between the corresponding first metal wire (8a or 8b) and a corresponding third metal wire (12a or 12b) for connecting the drain terminal (2) and a third metal pattern (11). The direction of current through the second metal wires (10a and 10b) is opposite to the direction of current through each of the first metal wire (8a or 8b) and the third metal wire (12a or 12b).
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: August 18, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Keigo Nakatani, Yuji Komatsuzaki, Shintaro Shinjo, Koji Yamanaka, Shohei Imai
  • Patent number: 10741700
    Abstract: Gate fingers (2-1 to 2-6) are arranged in one direction and each of the gate fingers is disposed so as to be adjacent to a corresponding one of drain electrodes (3-1 to 3-3) and a corresponding one of source electrodes (4-1 to 4-4) alternately, and have non-uniform gate head lengths.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: August 11, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yutaro Yamaguchi, Masatake Hangai, Koji Yamanaka
  • Publication number: 20200244227
    Abstract: Included is a compensation circuit (9) having one end connected to another end of a first output circuit (7) and another end of a second output circuit (8) and another end grounded, the compensation circuit having an electrical length of 90 degrees at a first operation frequency and an electrical length of 45 degrees at a second operation frequency which is half of the first operation frequency.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 30, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Keigo NAKATANI, Yuji KOMATSUZAKI, Shuichi SAKATA, Shintaro SHINJO, Koji YAMANAKA
  • Publication number: 20200235215
    Abstract: A semiconductor device includes; an underlying substrate; a semiconductor layer formed on the underlying substrate; electrode patterns in which a drain electrode and a source electrode are alternately arranged along an array direction determined in advance, on the semiconductor layer; and a group of gate fingers each having a shape extending in an extending direction which is different from the array direction. Each of the gate fingers is disposed in a region between the drain electrode and the source electrode. Moreover, the gate fingers are arranged at positions displaced from one another in the extending direction.
    Type: Application
    Filed: July 25, 2016
    Publication date: July 23, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yutaro YAMAGUCHI, Masatake HANGAI, Koji YAMANAKA
  • Publication number: 20200152803
    Abstract: Gate fingers (2-1 to 2-6) are arranged in one direction and each of the gate fingers is disposed so as to be adjacent to a corresponding one of drain electrodes (3-1 to 3-3) and a corresponding one of source electrodes (4-1 to 4-4) alternately, and have non-uniform gate head lengths.
    Type: Application
    Filed: May 18, 2017
    Publication date: May 14, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yutaro YAMAGUCHI, Masatake HANGAI, Koji YAMANAKA
  • Patent number: 10647648
    Abstract: A method for purifying an organic solvent, comprising contacting an organic solvent containing polyvalent metal ions with a monolithic organic porous ion exchanger. According to the present invention, a method for purifying an organic solvent can be provided, wherein a high rate of removing polyvalent metal ions in an organic solvent is achieved.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: May 12, 2020
    Assignee: ORGANO CORPORATION
    Inventors: Hitoshi Takada, Akira Nakamura, Masami Imamura, Koji Yamanaka