Patents by Inventor Takuya Harada

Takuya Harada 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: 8337726
    Abstract: In a fine particle dispersion, a fine particle (P) is dispersed in a mixed organic solvent. The fine particle (P) is formed of one type or not less than two types of a metal, an alloy, and/or a metallic compound, and has a mean particle diameter between 1 nm and 150 nm for primary particles thereof. Further, the fine particle (P) has a surface at least a part thereof coated with a polymer dispersing agent (D).
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: December 25, 2012
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Takuya Harada, Hidemichi Fujiwara, Kazuhiro Takashiba, Nobumitsu Yamanaka, Yusuke Yamada, Hideo Nishikubo, Takashi Unno
  • Patent number: 8277693
    Abstract: A method for producing a fine particle dispersion includes the steps of reducing a metal ion to form a fine particle dispersion aqueous solution; adding an aggregation accelerator into the fine particle dispersion aqueous solution so that agglomerated or precipitated fine particles are separated to obtain fine particles; and re-dispersing the fine particles into an organic solvent containing an organic solvent having an amide group, a low boiling point organic solvent having a boiling point between 20° C. and 100° C. at a normal pressure, and an organic solvent having a boiling point higher than 100° C. at a normal pressure and containing an alcohol and/or a polyhydric alcohol.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: October 2, 2012
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Takuya Harada, Hidemichi Fujiwara, Kazuhiro Takashiba, Nobumitsu Yamanaka, Yusuke Yamada, Hideo Nishikubo, Takashi Unno
  • Publication number: 20100113647
    Abstract: Disclosed is a fine particle dispersion which is superior in dispersibility and storage stability. Specifically disclosed is a fine particle dispersion in which a fine particle (P) comprised of one type or not less than two types of a metal, an alloy, and/or a metallic compound, having a mean particle diameter of between 1 nm and 150 nm for primary particles thereof, with being coated at least a part of a surface thereof with a polymer dispersing agent (D), is dispersed in a mixed organic solvent. This fine particle dispersion is characterized in that a weight ratio of (D/P) between the polymer dispersing agent (D) coating the surface of the fine particle (P) and the fine particles (P) in the dispersion is between 0.001 and 10, and the mixed organic solvent is one of: (i) a mixed organic solvent which contains an organic solvent (A) as between 50% and 95% by volume having an amide group, and a low boiling point organic solvent (B) as between 5% and 50% by volume having a boiling point of between 20° C.
    Type: Application
    Filed: July 25, 2007
    Publication date: May 6, 2010
    Inventors: Takuya Harada, Hidemichi Fujiwara, Kazuhiro Takashiba, Nobumitsu Yamanaka, Yusuke Yamada, Hideo Nishikubo, Takashi Unno
  • Publication number: 20090321689
    Abstract: Disclosed is a method for producing a fine particle dispersion such as a dispersion of metal fine particles which is superior in dispersibility and storage stability. Specifically disclosed is a method for producing a fine particle dispersion wherein fine particles of a metal or the like, having a mean particle diameter of between 1 nm and 150 nm for primary particles, are dispersed in an organic solvent.
    Type: Application
    Filed: July 25, 2007
    Publication date: December 31, 2009
    Inventors: Takuya Harada, Hidemichi Fujiwara, Kazuhiro Takashiba, Nobumitsu Yamanaka, Yusuke Yamada, Hideo Nishikubo, Takashi Unno
  • Patent number: 7639164
    Abstract: An output data correction device is provided for an A/D conversion circuit that achieves high precision over input voltage domains. An estimated maximum input ranging from 0 V to 5 V is divided into domains. A comparison circuit decides to which of the domains a voltage Vin input to a pulse phase-difference encoding circuit belongs. Control logic and a digital analog controller (DAC) select and transmit reference voltages associated with each of the domains. When each of the reference voltages is selected, a quadratic functional equation is computed and determined. A graph of the function passes coordinate points representing the reference voltages in a coordinate system with reference voltages and A/D-converted data values as dimensions. When each input voltage is selected, the A/D-converted digital data is corrected using the quadratic functional equation associated with the domain to which the input voltage Vin is decided to belong.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: December 29, 2009
    Assignee: DENSO CORPORATION
    Inventors: Takuya Honda, Takuya Harada
  • Publication number: 20080238738
    Abstract: An output data correction device is provided for an A/D conversion circuit that achieves high precision over input voltage domains. An estimated maximum input ranging from 0 V to 5 V is divided into domains. A comparison circuit decides to which of the domains a voltage Vin input to a pulse phase-difference encoding circuit belongs. Control logic and a digital analog controller (DAC) select and transmit reference voltages associated with each of the domains. When each of the reference voltages is selected, a quadratic functional equation is computed and determined. A graph of the function passes coordinate points representing the reference voltages in a coordinate system with reference voltages and A/D-converted data values as dimensions. When each input voltage is selected, the A/D-converted digital data is corrected using the quadratic functional equation associated with the domain to which the input voltage Vin is decided to belong.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 2, 2008
    Applicant: DENSO CORPORATION
    Inventors: Takuya Honda, Takuya Harada
  • Patent number: 7142936
    Abstract: A production system including a production line having a series of pieces of production equipment each of which has a parts supply unit. The production system includes: an NC management apparatus that is connected with each piece of the production equipment via a local-area network and acquires therefrom NC data used for operating each piece of the production equipment; and a scheduling apparatus that generates a production schedule and transmits the generated production schedule to the NC management apparatus via the local-area network. Here, the NC management apparatus generates, for each piece of the production equipment, data that is required to perform production according to the production schedule, obtains, for each piece of the production equipment, values that represent differences between current NC data that has been most recently acciuired and the generated data, and outputs the values.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: November 28, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masashi Yokomori, Keiji Hanada, Kouichi Kanematsu, Takuya Harada
  • Patent number: 7030791
    Abstract: In an A/D conversion device, one level shift circuit shifts an input voltage to the low potential side by Vt1, and another level shift circuit shifts the input voltage to the high potential side by Vt2. A multiplexer selects either of the shifted voltages to an A/D converter. In a correction mode, a correction data holding circuit holds values of reference voltages that are also A/D converted after being passed through the one level shift circuit and values of reference voltages that are A/D converted by being passed through the other level shift circuit, as correction values. A correction control circuit corrects the A/D converted value using the correction values.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: April 18, 2006
    Assignee: Denso Corporation
    Inventor: Takuya Harada
  • Patent number: 7030803
    Abstract: The A/D converter has first and second PPDC circuits (pulse-phase-difference coding circuits). The first PPDC circuit performs A/D conversions on the reference voltage and on the voltage signal amplified by an amplifier in an alternating sequence, the amplifier using the reference voltage as a potential base thereof. The second PPDC circuit performs A/D conversions always on the reference voltage. The A/D-converted data set of the voltage signal outputted from the first PPDC circuit is corrected depending on the difference between the A/D-converted data set of the reference voltage outputted from the second PPDC circuit when the first PPDC circuit A/D-converts the reference voltage and the A/D-converted data set of the reference voltage outputted from the second PPDC circuit when the first PPDC circuit A/D-converts the voltage signal.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: April 18, 2006
    Assignee: Denso Corporation
    Inventors: Takuya Harada, Masakiyo Horie, Takuya Honda, Nobuyuki Tanaka
  • Patent number: 6999006
    Abstract: A rotation position detecting device includes an angular signal generator which generates pulses the cycle period of which is even or equal when a rotating object rotates at a constant rotation speed and a non-pulse portion which corresponds to a reference position, an up-down command circuit for generating an up-down command signal the frequency of which is divided to a half of the frequency of the angular signal, a pair of first counters for counting up or down the clock signal when the up-down command signal changes from a first level to a second level to reset and subsequently counting down the clock signal when the up-down command signal changes from the second level to the first level, a pair of processing circuits for providing a first and second reference values, a pair of counters which generates detection signals when the counted number of the counters becomes smaller than the first or the second reference value.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: February 14, 2006
    Assignee: Denso Corporation
    Inventors: Hiroyuki Takeuchi, Takuya Harada
  • Publication number: 20050285769
    Abstract: The A/D converter has first and second PPDC circuits (pulse-phase-difference coding circuits). The first PPDC circuit performs A/D conversions on the reference voltage and on the voltage signal amplified by an amplifier in an alternating sequence, the amplifier using the reference voltage as a potential base thereof. The second PPDC circuit performs A/D conversions always on the reference voltage. The A/D-converted data set of the voltage signal outputted from the first PPDC circuit is corrected depending on the difference between the A/D-converted data set of the reference voltage outputted from the second PPDC circuit when the first PPDC circuit A/D-converts the reference voltage and the A/D-converted data set of the reference voltage outputted from the second PPDC circuit when the first PPDC circuit A/D-converts the voltage signal.
    Type: Application
    Filed: February 8, 2005
    Publication date: December 29, 2005
    Inventors: Takuya Harada, Masakiyo Horie, Takuya Honda, Nobuyuki Tanaka
  • Patent number: 6954096
    Abstract: A semiconductor integrated circuit device is provided to reduce the adverse effect of PWM noise occurring in a PWM driving section on an analog voltage processing section in an IC, in which digital and analog circuits are combined on a single chip. A sampling signal generation circuit outputs a sampling signal St to an A/D converter at a predetermined time when “delay time td+allowance time ta” has elapsed from a start signal Sp. The delay time td is shorter than “the minimum time width of H level of PWM signal SPWM1?allowance time ta”. The delay time td is also time from the variation of level of the PWM signal SPWM1 to actual variation in the passage of current through a power section.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: October 11, 2005
    Assignee: Denso Corporation
    Inventors: Kenji Ito, Takuya Harada, Hirofumi Isomura
  • Publication number: 20050177338
    Abstract: A rotation position detecting device includes an angular signal generator which generates pulses the cycle period of which is even or equal when a rotating object rotates at a constant rotation speed and a non-pulse portion which corresponds to a reference position, an up-down command circuit for generating an up-down command signal the frequency of which is divided to a half of the frequency of the angular signal, a pair of first counters for counting up or down the clock signal when the up-down command signal changes from a first level to a second level to reset and subsequently counting down the clock signal when the up-down command signal changes from the second level to the first level, a pair of processing circuits for providing a first and second reference values, a pair of counters which generates detection signals when the counted number of the counters becomes smaller than the first or the second reference value.
    Type: Application
    Filed: November 16, 2004
    Publication date: August 11, 2005
    Inventors: Hiroyuki Takeuchi, Takuya Harada
  • Publication number: 20050168363
    Abstract: In an A/D conversion device, one level shift circuit shifts an input voltage to the low potential side by Vt1, and another level shift circuit shifts the input voltage to the high potential side by Vt2. A multiplexer selects either of the shifted voltages to an A/D converter. In a correction mode, a correction data holding circuit holds values of reference voltages that are also A/D converted after being passed through the one level shift circuit and values of reference voltages that are A/D converted by being passed through the other level shift circuit, as correction values. A correction control circuit corrects the A/D converted value using the correction values.
    Type: Application
    Filed: January 27, 2005
    Publication date: August 4, 2005
    Inventor: Takuya Harada
  • Patent number: 6798707
    Abstract: A memory control apparatus for controlling the operation of a memory array in a serial memory employs a command control section for registering the bits of an instruction which is received as an externally supplied set of serial data in conjunction with a corresponding series of cycles of a clock signal, with each set of serial data formatted as a command data portion preceded by a start bit, whereby the shifting of the start bit into the MSB stage of the shift register is detected and used to terminate supplying the clock signal to the shift register, thereby eliminating the use of a counter circuit. Any additional clock signal cycle following shifting of the start bit into the MSB stage of the shift register is detected, so that operating errors caused by noise in the received clock signal can be reliably eliminated.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: September 28, 2004
    Assignee: Denso Corporation
    Inventors: Akimasa Niwa, Takuya Harada, Takayuki Aono, Shuji Agatsuma
  • Patent number: 6798708
    Abstract: In a memory controller, a serial data including an instruction bit train with addition of a start bit, a clock signal, a chip enable signal, and a reset signal are inputted. During the active period in which the chip enable signal is being inputted, the serial data is stored depending on the clock signal and an enabling signal is generated based on the end timing of active period. Thereby, memory access is executed depending on contents of the instruction bit train. However, when the relevant apparatus is reset during the active period, generation of the enabling signal based on the end timing of the active period is inhibited.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: September 28, 2004
    Assignee: Denso Corporation
    Inventors: Akimasa Niwa, Takayuki Aono, Takuya Harada
  • Publication number: 20040176870
    Abstract: A production system including a production line being a series of pieces of production equipment each of which has a parts supply unit. The production system includes: an NC management apparatus that is connected with each piece of the production equipment via a local-area network and acquires therefrom NC data used for operating each piece of the production equipment; and a scheduling apparatus that generates a production schedule and transmits the generated production schedule to the NC management apparatus via the local-area network. Here, the NC management apparatus generates, for each piece of the production equipment, data that is required to perform production according to the production schedule, obtains, for each piece of the production equipment, differences between current NC data that has been acquired the most recently and the generated data, and outputs the obtained differences.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 9, 2004
    Inventors: Masashi Yokomori, Keiji Hanada, Kouichi Kanematsu, Takuya Harada
  • Publication number: 20040150431
    Abstract: A semiconductor integrated circuit device is provided to reduce the adverse effect of PWM noise occurring in a PWM driving section on an analog voltage processing section in an IC, in which digital and analog circuits are combined on a single chip. A sampling signal generation circuit outputs a sampling signal St to an A/D converter at a predetermined time when “delay time td+allowance time ta” has elapsed from a start signal Sp. The delay time td is shorter than “the minimum time width of H level of PWM signal SPWM1−allowance time ta”. The delay time td is also time from the variation of level of the PWM signal SPWM1 to actual variation in the passage of current through a power section.
    Type: Application
    Filed: January 21, 2004
    Publication date: August 5, 2004
    Applicant: DENSO CORPORATION
    Inventors: Kenji Ito, Takuya Harada, Hirofumi Isomura
  • Patent number: 6711456
    Abstract: A production system including a production line having a series of pieces of production equipment, each of which has a parts supply unit. The production system includes an NC management apparatus that is connected with each piece of the production equipment via a local-area network and acquires therefrom NC data used for operating each piece of the production equipment, and a scheduling apparatus that generates a production schedule and transmits the generated production schedule to the NC management apparatus via the local-area network. The NC management apparatus generates, for each piece of the production equipment, data that is required to perform production according to the production schedule, obtains, for each piece of the production equipment, values that represent differences between current NC data that has been most recently acquired and the generated data, and outputs the values.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: March 23, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd
    Inventors: Masashi Yokomori, Keiji Hanada, Kouichi Kanematsu, Takuya Harada
  • Publication number: 20030142570
    Abstract: In a memory controller, a serial data including an instruction bit train with addition of a start bit, a clock signal, a chip enable signal, and a reset signal are inputted. During the active period in which the chip enable signal is being inputted, the serial data is stored depending on the clock signal and an enabling signal is generated based on the end timing of active period. Thereby, memory access is executed depending on contents of the instruction bit train. However, when the relevant apparatus is reset during the active period, generation of the enabling signal based on the end timing of the active period is inhibited.
    Type: Application
    Filed: January 27, 2003
    Publication date: July 31, 2003
    Inventors: Akimasa Niwa, Takayuki Aono, Takuya Harada