Patents by Inventor Tadashi Matsuoka

Tadashi Matsuoka 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: 11038469
    Abstract: A power amplification module includes a first transistor which amplifies and outputs a radio frequency signal input to its base; a current source which outputs a control current; a second transistor connected to an output of the current source, a first current from the control current input to its collector, a control voltage generation circuit connected to the output and which generates a control voltage according to a second current from the control current; a first FET, the drain being supplied with a supply voltage, the source being connected to the base of the first transistor, and the gate being supplied with the control voltage; and a second FET, the drain being supplied with the supply voltage, the source being connected to the base of the second transistor, and the gate being supplied with the control voltage.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: June 15, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kenichi Shimamoto, Satoshi Tanaka, Tadashi Matsuoka
  • Publication number: 20200280286
    Abstract: A power amplification module includes a first transistor which amplifies and outputs a radio frequency signal input to its base; a current source which outputs a control current; a second transistor connected to an output of the current source, a first current from the control current input to its collector, a control voltage generation circuit connected to the output and which generates a control voltage according to a second current from the control current; a first FET, the drain being supplied with a supply voltage, the source being connected to the base of the first transistor, and the gate being supplied with the control voltage; and a second FET, the drain being supplied with the supply voltage, the source being connected to the base of the second transistor, and the gate being supplied with the control voltage.
    Type: Application
    Filed: May 19, 2020
    Publication date: September 3, 2020
    Inventors: Kenichi Shimamoto, Satoshi Tanaka, Tadashi Matsuoka
  • Patent number: 10739614
    Abstract: An optical device has a light guide plate that guides light in a plane parallel to an emission surface thereof, an optical deflection surface that deflects light entering the light guide plate from a light source that faces a plane parallel to at least the emission surface or the surface opposite the emission surface, so that the light travels along the light guide direction of the light guide plate, and a plurality of light focusing portions. Each of the light focusing portions includes an optical surface whereon the light deflected by the optical deflection surface and guided by the light guide plate is incident, and which causes the emission surface to output emission light that converges substantially on a convergence point or convergence line in a space, or that radiates substantially from a convergence point or convergence line in a space.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: August 11, 2020
    Assignee: Omron Corporation
    Inventors: Masayuki Shinohara, Yasuhiro Tanoue, Norikazu Kitamura, Kazuyuki Okada, Tadashi Matsuoka
  • Patent number: 10693421
    Abstract: A power amplification module includes a first transistor which amplifies and outputs a radio frequency signal input to its base; a current source which outputs a control current; a second transistor connected to an output of the current source, a first current from the control current input to its collector, a control voltage generation circuit connected to the output and which generates a control voltage according to a second current from the control current; a first FET, the drain being supplied with a supply voltage, the source being connected to the base of the first transistor, and the gate being supplied with the control voltage; and a second FET, the drain being supplied with the supply voltage, the source being connected to the base of the second transistor, and the gate being supplied with the control voltage.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: June 23, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kenichi Shimamoto, Satoshi Tanaka, Tadashi Matsuoka
  • Patent number: 10513404
    Abstract: A sheet-material supply device includes a lift, a sheet-material detector, and a sheet-material retaining conveyor. The lift elevates sheet materials in a stacked state. The sheet-material detector detects that an uppermost sheet material of the sheet materials in the stacked state has reached a predetermined height. The sheet-material retaining conveyor retains and conveys the uppermost sheet material that has reached the predetermined height. The sheet-material supply device stops elevation of the sheet materials in the stacked state when the sheet-material detector detects that the uppermost sheet material has reached the predetermined height. The sheet-material retaining conveyor is disposed to be movable in a direction in which the sheet materials in the stacked state elevate.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: December 24, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takeshi Akai, Hidehiko Fujiwara, Yasuo Niikura, Yousuke Edo, Satoru Takano, Yasunori Hino, Tadashi Matsuoka, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa
  • Publication number: 20190290683
    Abstract: The present invention provides a pharmaceutical composition that can improve the survival time and the survival rate of a patient after onset of hemorrhagic shock. The present invention provides a gaseous pharmaceutical composition comprising hydrogen gas for improving and/or stabilizing circulatory dynamics after onset of hemorrhagic shock. The pharmaceutical composition of the present invention can be administered when blood transfusion therapy cannot be given, and can increase the survival rate after onset of hemorrhagic shock or extend the survival time compared to when the pharmaceutical composition of the present invention is not administered.
    Type: Application
    Filed: July 21, 2017
    Publication date: September 26, 2019
    Applicants: Keio University, Taiyo Nippon Sanso Corporation
    Inventors: Masaru SUZUKI, Tadashi MATSUOKA, Tomoyoshi TAMURA, Kei HAYASHIDA, Matoaki SANO
  • Patent number: 10384897
    Abstract: A sheet-member separation device includes a first air blower, an attractor, a conveyor, a second air blower, and an adjuster. The first air blower blows air onto a front side of a stack of sheet members in a sheet-member conveyance direction. The attractor attracts an uppermost sheet member floated from the stack of sheet members by the air blown from the first air blower. The conveyor conveys, in the sheet-member conveyance direction, the sheet member attracted by the attractor. The second air blower blows air toward a lateral side of the sheet member. The adjuster moves the second air blower and the attractor together to adjust positions of the second air blower and the attractor in the sheet-member conveyance direction.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: August 20, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoru Takano, Hidehiko Fujiwara, Takeshi Akai, Yasuo Niikura, Yousuke Edo, Yasunori Hino, Tadashi Matsuoka, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa
  • Patent number: 10298191
    Abstract: In a power amplifier module for performing slope control of a transmitting signal, a gain variation due to a variation in battery voltage is suppressed while suppressing an increase in circuit size. The power amplifier module includes: a first regulator for outputting a first voltage corresponding to a control voltage for controlling a signal level; a second regulator for outputting a second voltage that rises as a battery voltage drops; a first amplifier supplied with the first voltage as a power-supply voltage to amplify an input signal and output an amplified signal; and a second amplifier for amplifying the amplified signal, wherein the second amplifier includes a first amplification unit supplied with the second voltage as the power-supply voltage to amplify the amplified signal, and a second amplification unit supplied with the battery voltage as the power-supply voltage to amplify the amplified signal.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: May 21, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Takayuki Tsutsui, Tadashi Matsuoka, Satoshi Tanaka
  • Publication number: 20190140596
    Abstract: A power amplification module includes a first transistor which amplifies and outputs a radio frequency signal input to its base; a current source which outputs a control current; a second transistor connected to an output of the current source, a first current from the control current input to its collector, a control voltage generation circuit connected to the output and which generates a control voltage according to a second current from the control current; a first FET, the drain being supplied with a supply voltage, the source being connected to the base of the first transistor, and the gate being supplied with the control voltage; and a second FET, the drain being supplied with the supply voltage, the source being connected to the base of the second transistor, and the gate being supplied with the control voltage.
    Type: Application
    Filed: January 7, 2019
    Publication date: May 9, 2019
    Inventors: Kenichi SHIMAMOTO, Satoshi TANAKA, Tadashi MATSUOKA
  • Patent number: 10211783
    Abstract: A power amplification module includes a first transistor which amplifies and outputs a radio frequency signal input to its base; a current source which outputs a control current; a second transistor connected to an output of the current source, a first current from the control current input to its collector, a control voltage generation circuit connected to the output and which generates a control voltage according to a second current from the control current; a first FET, the drain being supplied with a supply voltage, the source being connected to the base of the first transistor, and the gate being supplied with the control voltage; and a second FET, the drain being supplied with the supply voltage, the source being connected to the base of the second transistor, and the gate being supplied with the control voltage.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: February 19, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kenichi Shimamoto, Satoshi Tanaka, Tadashi Matsuoka
  • Patent number: 10065824
    Abstract: A stacking apparatus includes a conveyance unit, a stacking unit, and a separation member supply unit. The conveyance unit conveys sheets for circuit board. The stacking unit stacks the sheets. The separation member supply unit supplies a separation member to separate the stacked sheets at any position. The separation member supply unit places the separation member on the sheet in being conveyed.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: September 4, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Yousuke Edo, Yasufumi Takahashi, Yasuo Niikura, Satoru Takano, Hidehiko Fujiwara, Takeshi Akai, Yasunori Hino, Tadashi Matsuoka, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa, Hiroshi Komuro, Masaru Yamagishi, Toshihiro Shimada, Satoshi Aizawa, Kenji Ishii
  • Publication number: 20180226933
    Abstract: In a power amplifier module for performing slope control of a transmitting signal, a gain variation due to a variation in battery voltage is suppressed while suppressing an increase in circuit size. The power amplifier module includes: a first regulator for outputting a first voltage corresponding to a control voltage for controlling a signal level; a second regulator for outputting a second voltage that rises as a battery voltage drops; a first amplifier supplied with the first voltage as a power-supply voltage to amplify an input signal and output an amplified signal; and a second amplifier for amplifying the amplified signal, wherein the second amplifier includes a first amplification unit supplied with the second voltage as the power-supply voltage to amplify the amplified signal, and a second amplification unit supplied with the battery voltage as the power-supply voltage to amplify the amplified signal.
    Type: Application
    Filed: February 7, 2018
    Publication date: August 9, 2018
    Inventors: Takayuki TSUTSUI, Tadashi MATSUOKA, Satoshi TANAKA
  • Patent number: 10017340
    Abstract: A sheet conveyance apparatus includes: a placement part configured such that stacked sheets are disposed on the placement part; a housing including an open/close part and accommodating the placement part, at least a portion of the open/close part being configured to be opened and closed; and a suction unit connected with the housing, and configured to draw gas from an interior of the housing.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: July 10, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Tadashi Matsuoka, Yasuo Niikura, Yousuke Edo, Satoru Takano, Yasunori Hino, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa
  • Patent number: 10009059
    Abstract: Provided is a high frequency module capable of reducing the IMD. During the transmission/reception operation based on W-CDMA, control signals VSWCC, VTRXCC are output as Hi signals from a control logic. Consequently, transistor T1 is turned ON, and transistors T2, T3 are respectively turned OFF. When the transistor T1 is turned ON, the voltage output from an operational amplifier is output as the signal VVSW to a control terminal, and the control signal VTRXC is output as a Hi signal. The signal VVSW is of a voltage level that is lower than that of the control signal VTRXC. The control signal VTRXC is a signal for turning ON a transistor circuit Q1, and the signal VVSW is a signal for supplying a DC voltage to the antenna potential. It is thereby possible to reduce the ON resistance of the transistor circuit Q1 and improve the IMD characteristics.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: June 26, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hayato Nakamura, Eigo Tange, Tadashi Matsuoka, Yasushi Shigeno
  • Publication number: 20180129061
    Abstract: An optical device has a light guide plate that guides light in a plane parallel to an emission surface thereof, an optical deflection surface that deflects light entering the light guide plate from a light source that faces a plane parallel to at least the emission surface or the surface opposite the emission surface, so that the light travels along the light guide direction of the light guide plate, and a plurality of light focusing portions. Each of the light focusing portions includes an optical surface whereon the light deflected by the optical deflection surface and guided by the light guide plate is incident, and which causes the emission surface to output emission light that converges substantially on a convergence point or convergence line in a space, or that radiates substantially from a convergence point or convergence line in a space.
    Type: Application
    Filed: November 9, 2017
    Publication date: May 10, 2018
    Applicant: OMRON Corporation
    Inventors: Masayuki Shinohara, Yasuhiro Tanoue, Norikazu Kitamura, Kazuyuki Okada, Tadashi Matsuoka
  • Patent number: 9923533
    Abstract: In a power amplifier module for performing slope control of a transmitting signal, a gain variation due to a variation in battery voltage is suppressed while suppressing an increase in circuit size. The power amplifier module includes: a first regulator for outputting a first voltage corresponding to a control voltage for controlling a signal level; a second regulator for outputting a second voltage that rises as a battery voltage drops; a first amplifier supplied with the first voltage as a power-supply voltage to amplify an input signal and output an amplified signal; and a second amplifier for amplifying the amplified signal, wherein the second amplifier includes a first amplification unit supplied with the second voltage as the power-supply voltage to amplify the amplified signal, and a second amplification unit supplied with the battery voltage as the power-supply voltage to amplify the amplified signal.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: March 20, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Takayuki Tsutsui, Tadashi Matsuoka, Satoshi Tanaka
  • Publication number: 20170288611
    Abstract: A power amplification module includes a first transistor which amplifies and outputs a radio frequency signal input to its base; a current source which outputs a control current; a second transistor connected to an output of the current source, a first current from the control current input to its collector, a control voltage generation circuit connected to the output and which generates a control voltage according to a second current from the control current; a first FET, the drain being supplied with a supply voltage, the source being connected to the base of the first transistor, and the gate being supplied with the control voltage; and a second FET, the drain being supplied with the supply voltage, the source being connected to the base of the second transistor, and the gate being supplied with the control voltage.
    Type: Application
    Filed: June 21, 2017
    Publication date: October 5, 2017
    Inventors: Kenichi Shimamoto, Satoshi Tanaka, Tadashi Matsuoka
  • Publication number: 20170244373
    Abstract: In a power amplifier module for performing slope control of a transmitting signal, a gain variation due to a variation in battery voltage is suppressed while suppressing an increase in circuit size. The power amplifier module includes: a first regulator for outputting a first voltage corresponding to a control voltage for controlling a signal level; a second regulator for outputting a second voltage that rises as a battery voltage drops; a first amplifier supplied with the first voltage as a power-supply voltage to amplify an input signal and output an amplified signal; and a second amplifier for amplifying the amplified signal, wherein the second amplifier includes a first amplification unit supplied with the second voltage as the power-supply voltage to amplify the amplified signal, and a second amplification unit supplied with the battery voltage as the power-supply voltage to amplify the amplified signal.
    Type: Application
    Filed: May 8, 2017
    Publication date: August 24, 2017
    Inventors: Takayuki TSUTSUI, Tadashi MATSUOKA, Satoshi TANAKA
  • Patent number: 9722542
    Abstract: A power amplification module includes a first transistor which amplifies and outputs a radio frequency signal input to its base; a current source which outputs a control current; a second transistor connected to an output of the current source, a first current from the control current input to its collector, a control voltage generation circuit connected to the output and which generates a control voltage according to a second current from the control current; a first FET, the drain being supplied with a supply voltage, the source being connected to the base of the first transistor, and the gate being supplied with the control voltage; and a second FET, the drain being supplied with the supply voltage, the source being connected to the base of the second transistor, and the gate being supplied with the control voltage.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: August 1, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kenichi Shimamoto, Satoshi Tanaka, Tadashi Matsuoka
  • Publication number: 20170174458
    Abstract: A sheet-member separation device includes a first air blower, an attractor, a conveyor, a second air blower, and an adjuster. The first air blower blows air onto a front side of a stack of sheet members in a sheet-member conveyance direction. The attractor attracts an uppermost sheet member floated from the stack of sheet members by the air blown from the first air blower. The conveyor conveys, in the sheet-member conveyance direction, the sheet member attracted by the attractor. The second air blower blows air toward a lateral side of the sheet member. The adjuster moves the second air blower and the attractor together to adjust positions of the second air blower and the attractor in the sheet-member conveyance direction.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 22, 2017
    Inventors: Satoru Takano, Hidehiko Fujiwara, Takeshi Akai, Yasuo Niikura, Yousuke Edo, Yasunori Hino, Tadashi Matsuoka, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa