Patents by Inventor Seiji Fukunaga

Seiji Fukunaga 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: 20210330281
    Abstract: Provided is a biological sound measurement device capable of suppressing an occurrence of a rubbing noise and improving a measurement accuracy. The biological sound measurement device (1) includes a sound measurement unit (3) including a contact surface (30) configured to be brought into contact with the body surface S of a subject, and a gripping portion (10) supporting the sound measurement unit (3) and configured to be gripped by a measurer. At least a first region of a front surface of the gripping portion (10), excluding a region to be covered by a hand Ha of the measurer in a state in which the gripping portion (10) is gripped by the measurer, is a region not including an angular portion.
    Type: Application
    Filed: July 9, 2021
    Publication date: October 28, 2021
    Inventors: Katsuyoshi MORITA, Takayuki SHIINA, Seiji FUKUNAGA
  • Publication number: 20210330280
    Abstract: Provided is a biological sound measurement device capable of smoothly performing tasks from measurement initiation to result confirmation, that includes a sound measurement unit including a contact surface configured to be brought into contact with the body surface of a subject, a gripping portion supporting the sound measurement unit and configured to be gripped by a measurer, and a display unit provided to the gripping portion and configured to display an analysis result of a biological sound measured by the sound measurement unit. The gripping portion is configured to be gripped by the measurer in a state in which an index finger of the measurer is placed on a back surface of the sound measurement unit, and the display unit is provided on a surface of the gripping portion on the body surface side in a state in which the contact surface is in contact with the body surface.
    Type: Application
    Filed: July 8, 2021
    Publication date: October 28, 2021
    Inventors: Masayuki FUKUTSUKA, Katsuyoshi MORITA, Kosuke INOUE, Nobuki YAKURA, Seiji FUKUNAGA, Tsuyoshi OGIHARA, Masahiko YUMOTO, Yuki TAKUMA
  • Publication number: 20210330278
    Abstract: Provided is a biological sound measurement device to improve a measurement accuracy, that includes a sound measurement unit having a contact surface configured to be brought into contact with a body surface, and a gripping portion supporting the sound measurement unit and configured to be gripped by a measurer. The gripping portion is configured to be gripped in a state in which an index finger is placed in a recessed portion, the sound measurement unit includes a sound detector, a housing forming an accommodation space accommodating the sound detector and includes an opening, and a cover closing the opening from outside the accommodation space and forming a pressure-receiving region configured to receive pressure from the body surface. The contact surface is formed by a front surface of the cover, and the opening positioned on a straight line extending in a direction of a force applied from the index finger.
    Type: Application
    Filed: July 9, 2021
    Publication date: October 28, 2021
    Inventors: Masayuki FUKUTSUKA, Katsuyoshi MORITA, Kosuke INOUE, Seiji FUKUNAGA, Tsuyoshi OGIHARA, Masahiko YUMOTO, Yuki TAKUMA
  • Patent number: 8801421
    Abstract: A method for forming tablets using a roll press type apparatus for forming powdery material. The apparatus comprises two rolls for compressing tablets, wherein the rolls have a cylindrical shape and are arranged in the same direction, and can rotate toward their inner sides. When only one of the rolls has the plurality of cavities for forming tablets that are disposed on its outer surface, the speeds of their outer surfaces are controlled so that the speed of the roll that has the plurality of cavities on its outer surface is slower than that of the roll that has no cavity. Further, when both rolls have the plurality of cavities forming tablets that are disposed on their outer surfaces, the speeds of their outer surfaces are controlled so that the speeds of the rolls differ. Consequently, tablets that have a high dimensional accuracy and no burrs formed around them can be produced.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: August 12, 2014
    Assignee: Sintokogio, Ltd.
    Inventors: Katsuaki Odagi, Seiji Fukunaga
  • Publication number: 20100301519
    Abstract: The method for forming tablets uses a roll press type apparatus for forming powdery material. The apparatus comprises two rolls for compressing tablets, wherein the rolls have a cylindrical shape and are arranged in the same direction, and can rotate toward their inner sides. When only one of the rolls has the plurality of cavities for forming tablets that are disposed on its outer surface, the speeds of their outer surfaces are controlled so that the speed of the roll that has the plurality of cavities on its outer surface is slower than that of the roll that has no cavity. Further, when both rolls have the plurality of cavities for forming tablets that are disposed on their outer surfaces, the speeds of their outer surfaces are controlled so that the speeds of the rolls differ. Consequently, tablets that have a high dimensional accuracy and no burrs formed around them can be produced.
    Type: Application
    Filed: November 13, 2007
    Publication date: December 2, 2010
    Inventors: Katsuaki Odagi, Seiji Fukunaga
  • Patent number: 6384650
    Abstract: A digital PLL circuit, which can realize a high accurate hold-over function even in case that power supply voltage or ambient temperature is changed, is provided. The digital PLL circuit provides a first, a second and a third loop circuits. In the third loop circuit, an adder and a differentiator calculate a difference between a frequency of a signal outputted from a fixed frequency oscillator and an output frequency, and a memory circuit memorizes the difference calculated at the adder and the differentiator, and another adder compares the difference between the frequency of the signal outputted from the fixed frequency oscillator and a current output frequency with the difference memorized in the memory circuit. And a frequency of a signal outputting from a voltage controlled oscillator (VCO) is controlled by the compared result.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: May 7, 2002
    Assignee: NEC Corporation
    Inventors: Seiji Fukunaga, Yasuhiro Sato
  • Patent number: 4978847
    Abstract: A pulse generator and a disk sector boundary signal generator are implemented using an optical pattern of alternating light and dark radial lines or segments which are adhered to and rotate in unison with the rotor of a motor and are sensed by an optical sensor. The output of the optical sensor includes error conditions including sensor error, pattern error component, the wow component of the motor and the flutter component of the motor. A first pulse generating means eliminates sensor and pattern error components and the flutter component leaving only the wow component of the sensor output. A second pulse generating means that eliminates the higher frequency error components leaving pattern error components, wow components and flutter components, where the system is designed to generate flutter components with a frequency at least ten times the frequency of the wow component. The first pulses serve as disk sector boundary reference pulses.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: December 18, 1990
    Assignee: International Business Machines Corporation
    Inventors: Seiji Fukunaga, Takashi Nakamura, Hiroyuki Ono