Patents by Inventor Masaaki Morikawa

Masaaki Morikawa 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: 11101780
    Abstract: According to an embodiment, a comparator circuit includes first and second PMOS transistors that compose a differential pair, a first switching transistor with a main current path that is connected between an input terminal and a gate of the first PMOS transistor, a voltage source that applies a reference voltage to a gate of the second PMOS transistor, and a first bias circuit that applies a first bias voltage to a control electrode of the first switching transistor.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: August 24, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Masaaki Morikawa
  • Publication number: 20200244238
    Abstract: According to an embodiment, a comparator circuit includes first and second PMOS transistors that compose a differential pair, a first switching transistor with a main current path that is connected between an input terminal and a gate of the first PMOS transistor, a voltage source that applies a reference voltage to a gate of the second PMOS transistor, and a first bias circuit that applies a first bias voltage to a control electrode of the first switching transistor.
    Type: Application
    Filed: July 23, 2019
    Publication date: July 30, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Masaaki MORIKAWA
  • Patent number: 9515503
    Abstract: A battery monitoring system includes a clock input terminal, a data input terminal, a communication control circuit receiving the clock signal and the data signal from the clock input terminal and the data input terminal, respectively, a main power regulator controlled by the communication control circuit to supply and stop supplying main power, a charge circuit charged by the clock signal, and a sub power regulator started by a charge voltage of the charge circuit to supply a sub power to the communication control circuit. The communication control circuit controls the main power regulator with the data signal when the sub power is received from the sub power regulator.
    Type: Grant
    Filed: March 2, 2014
    Date of Patent: December 6, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Masaaki Morikawa
  • Patent number: 9101911
    Abstract: Provided is a method for producing a functional material, including the steps of: bringing a polyvalent metal cation aqueous solution into contact with a base material; bringing a polyanion aqueous solution containing a functional component into contact with the base material previously in contact with the polyvalent metal cation aqueous solution to bond the polyvalent metal cations and the polyanions to each other, and thereby forming an insoluble compound containing the functional component; and drying the base material including the insoluble compound.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: August 11, 2015
    Assignees: Unicharm Corporation, Ehime Prefectural Government
    Inventors: Hideaki Ichiura, Masaaki Morikawa, Masaki Takahashi, Noriyoshi Nishida, Takamitsu Igaue, Takayoshi Konishi
  • Publication number: 20150077059
    Abstract: A battery monitoring system includes a clock input terminal, a data input terminal, a communication control circuit receiving the clock signal and the data signal from the clock input terminal and the data input terminal, respectively, a main power regulator controlled by the communication control circuit to supply and stop supplying main power, a charge circuit charged by the clock signal, and a sub power regulator started by a charge voltage of the charge circuit to supply a sub power to the communication control circuit. The communication control circuit controls the main power regulator with the data signal when the sub power is received from the sub power regulator.
    Type: Application
    Filed: March 2, 2014
    Publication date: March 19, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Masaaki MORIKAWA
  • Patent number: 8823444
    Abstract: A reference voltage generating circuit comprises a pair of variable resistors connected to a pair of bipolar transistors. A differential amplifier amplifies the band gap voltage difference between the bipolar transistors and outputs a reference voltage to an output terminal. An output stage resistor is connected to the output terminal and a resistance dividing circuit. The generating circuit includes temperature compensating circuits that receive tap voltages from resistance dividing circuit and a current proportional to the temperature, then output correction currents. The generating circuit additionally includes a current mirror circuit that outputs a mirror current depending on each correction current. The reference voltage generating circuit thus corrects the temperature dependence of the reference voltage.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: September 2, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryuji Fujime, Masaaki Morikawa
  • Publication number: 20140084989
    Abstract: A reference voltage generating circuit comprises a pair of variable resistors connected to a pair of bipolar transistors. A differential amplifier amplifies the band gap voltage difference between the bipolar transistors and outputs a reference voltage to an output terminal. An output stage resistor is connected to the output terminal and a resistance dividing circuit. The generating circuit includes temperature compensating circuits that receive tap voltages from resistance dividing circuit and a current proportional to the temperature, then output correction currents. The generating circuit additionally includes a current mirror circuit that outputs a mirror current depending on each correction current. The reference voltage generating circuit thus corrects the temperature dependence of the reference voltage.
    Type: Application
    Filed: March 8, 2013
    Publication date: March 27, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ryuji FUJIME, Masaaki MORIKAWA
  • Publication number: 20130330990
    Abstract: Provided is a method for producing a functional material, including the steps of: bringing a polyvalent metal cation aqueous solution into contact with a base material; bringing a polyanion aqueous solution containing a functional component into contact with the base material previously in contact with the polyvalent metal cation aqueous solution to bond the polyvalent metal cations and the polyanions to each other, and thereby forming an insoluble compound containing the functional component; and drying the base material including the insoluble compound.
    Type: Application
    Filed: April 15, 2013
    Publication date: December 12, 2013
    Inventors: Hideaki ICHIURA, Masaaki MORIKAWA, Masaki TAKAHASHI, Noriyoshi NISHIDA, Takamitsu IGAUE, Takayoshi Konishi
  • Patent number: 8484792
    Abstract: A cleaning tool includes a cleaning unit including a water-disintegrable cleaning substrate which is dispersible in water, and which holds a microcapsule encapsulating a cleaning component.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: July 16, 2013
    Assignee: Unicharm Corporation
    Inventors: Takayoshi Konishi, Hideaki Ichiura, Masaaki Morikawa, Masaki Takahashi, Noriyoshi Nishida
  • Patent number: 8440731
    Abstract: Provided is a method for producing a functional material, including the steps of: bringing a polyvalent metal cation aqueous solution into contact with a base material; bringing a polyanion aqueous solution containing a functional component into contact with the base material previously in contact with the polyvalent metal cation aqueous solution to bond the polyvalent metal cations and the polyanions to each other, and thereby forming an insoluble compound containing the functional component; and drying the base material including the insoluble compound.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: May 14, 2013
    Assignee: Unicharm Corporation
    Inventors: Hideaki Ichiura, Masaaki Morikawa, Masaki Takahashi, Noriyoshi Nishida, Takamitsu Igaue, Takayoshi Konishi
  • Publication number: 20130026994
    Abstract: According to one embodiment, a battery cell monitoring circuit detects an abnormity in the cell balancing and terminals of each battery cell. One end of the first switch is connected to the first cell balancing terminal, and the other end of the first switch is connected to the second cell balancing terminal, so that the first switch is turned on/off based on a first control signal to perform cell balancing. The current source and the second switch are arranged in parallel with the first switch, and are connected in series between the one end and the other end of the first switch. The current source supplies a current. The second switch is turned on/off based on a second control signal. The first detection unit receives a first cell voltage measuring terminal voltage and a first cell balancing terminal voltage, and detects a terminal open state. The second detection unit receives a second cell voltage measuring terminal voltage and a second cell balancing terminal voltage, and detects a terminal open state.
    Type: Application
    Filed: March 15, 2012
    Publication date: January 31, 2013
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Masaaki MORIKAWA
  • Patent number: 7896410
    Abstract: Thickness T in a vehicle longitudinal direction of a first energy-absorbing member 18, which is disposed at a front portion of a vehicle 10, tapers from a middle portion of a vehicle lateral direction (thickness Tc) toward an end portion (thickness Ts). For at least one (preferably both) of the first energy-absorbing member 18 and a second energy-absorbing member, rigidity in the vehicle longitudinal direction is made smaller from the vehicle lateral direction end portion toward the middle. Hence, loads acting on an impact body 102 when the vehicle 10 impacts with the impact body 102 are equalized in the vehicle lateral direction.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: March 1, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaaki Morikawa, Osamu Nagasaka
  • Publication number: 20110027844
    Abstract: A method for conveniently and efficiently producing quinones, and particularly menaquinone, from a microorganism is provided. The present invention relates to a method for producing quinones, comprising culturing a microorganism that produces quinones in the presence of a porous carrier.
    Type: Application
    Filed: March 3, 2010
    Publication date: February 3, 2011
    Applicant: NISSHIN PHARMA INC.
    Inventors: Masaaki Morikawa, Yasushi Oogo, Yoshio Suzuki
  • Publication number: 20100306937
    Abstract: A cleaning tool includes a cleaning unit including a water-disintegrable cleaning substrate which is dispersible in water, and which holds a microcapsule encapsulating a cleaning component.
    Type: Application
    Filed: September 24, 2008
    Publication date: December 9, 2010
    Inventors: Takayoshi Konishi, Hideaki Ichiura, Masaaki Morikawa, Masaki Takahashi, Noriyoshi Nishida
  • Publication number: 20100144909
    Abstract: Provided is a method for producing a functional material, including the steps of: bringing a polyvalent metal cation aqueous solution into contact with a base material; bringing a polyanion aqueous solution containing a functional component into contact with the base material previously in contact with the polyvalent metal cation aqueous solution to bond the polyvalent metal cations and the polyanions to each other, and thereby forming an insoluble compound containing the functional component; and drying the base material including the insoluble compound.
    Type: Application
    Filed: January 22, 2008
    Publication date: June 10, 2010
    Inventors: Hideaki Ichiura, Masaaki Morikawa, Masaki Takahashi, Noriyoshi Nishida, Takamitsu Igaue, Takayoshi Konishi
  • Publication number: 20090267367
    Abstract: Thickness T in a vehicle longitudinal direction of a first energy-absorbing member 18, which is disposed at a front portion of a vehicle 10, tapers from a middle portion of a vehicle lateral direction (thickness Tc) toward an end portion (thickness Ts). For at least one (preferably both) of the first energy-absorbing member 18 and a second energy-absorbing member, rigidity in the vehicle longitudinal direction is made smaller from the vehicle lateral direction end portion toward the middle. Hence, loads acting on an impact body 102 when the vehicle 10 impacts with the impact body 102 are equalized in the vehicle lateral direction.
    Type: Application
    Filed: June 6, 2006
    Publication date: October 29, 2009
    Inventors: Masaaki Morikawa, Osamu Nagasaka
  • Patent number: 7481488
    Abstract: A vehicle hood structure of the present invention has: a hood outer panel structuring a vehicle body outer side surface of a hood; a hood inner panel disposed along an entire region of a reverse surface of the hood outer panel, a cross-sectional configuration of the hood inner panel as seen from a vehicle longitudinal direction being a wavy configuration; and shelf portions formed along the vehicle longitudinal direction at side wall portions of the wavy cross-sectional configuration, wherein the cross-sectional configuration of a wavy configuration, of the hood inner panel, is formed along the vehicle longitudinal direction.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: January 27, 2009
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Koki Ikeda, Masaaki Morikawa, Hideki Ishitobi
  • Publication number: 20080272618
    Abstract: A vehicle hood structure of the present invention has: a hood outer panel structuring a vehicle body outer side surface of a hood; a hood inner panel disposed along an entire region of a reverse surface of the hood outer panel, a cross-sectional configuration of the hood inner panel as seen from a vehicle longitudinal direction being a wavy configuration; and shelf portions formed along the vehicle longitudinal direction at side wall portions of the wavy cross-sectional configuration, wherein the cross-sectional configuration of a wavy configuration, of the hood inner panel, is formed along the vehicle longitudinal direction.
    Type: Application
    Filed: June 30, 2008
    Publication date: November 6, 2008
    Inventors: Koki Ikeda, Masaaki Morikawa, Hideki Ishitobi
  • Patent number: 7425032
    Abstract: A seal structure includes a frame arranged on an outer periphery of a window portion of a vehicle; a division bar which is connected to the frame by tightening and divides the window portion; a seal member which provides a seal between a vehicle outer side and a vehicle inner side, between the frame and the division bar; and a transmitting portion which transmits a tightening force applied to the frame and the division bar to the seal member.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: September 16, 2008
    Assignees: Toyota Jidosha Kabushiki Kaisha, VTEC Co., Ltd.
    Inventors: Masaaki Morikawa, Yasuaki Kawakami
  • Patent number: 7322522
    Abstract: The present invention provides identification functional paper which allows secure measurement of a change in signal caused by a magnetic material and excels in waveform reproducibility when measuring a single specimen two or more times, and an identification card including the identification functional paper. The identification functional paper includes a magnetized fiber obtained by filling the fiber inner cavity with a magnetic material, and the identification card includes the identification functional paper.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: January 29, 2008
    Assignees: Lintec Corporation, Ehime Prefectural Government
    Inventors: Katsuhisa Fujiwara, Masaaki Morikawa, Satoshi Yamamoto, Kousaku Nagashima, Taiga Matsushita, Tatsuo Senba