Patents by Inventor Hiroyuki Kukita

Hiroyuki Kukita 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: 20210104655
    Abstract: To standardize a voltage regulator configured to regulate a voltage for regulating a temperature of a heat regulation mechanism without the heat regulation mechanism of a sensing sensor in a sensing device that includes the heat regulation mechanism to regulate a temperature of a piezoelectric resonator corresponding to a voltage and uses the sensing sensor to cause the sensing object to adsorb to and desorb from the piezoelectric resonator by increase and decrease of the temperature. A drive voltage is regulated to regulate an amplification factor of a heat regulation voltage input to a drive voltage regulator 73 that regulates the temperature of the heat regulation mechanism corresponding to the type of a sensing sensor 2 connected to a device main body 3.
    Type: Application
    Filed: March 25, 2019
    Publication date: April 8, 2021
    Applicant: NIHON DEMPA KOGYO CO., LTD.
    Inventors: Yuki YANAGISAWA, Hiroyuki KUKITA
  • Patent number: 10931235
    Abstract: A sensing sensor includes an oscillator circuit, a base, a connection portion, and a temperature changing unit. The oscillator circuit oscillates the piezoelectric resonator. The base includes a base main body in which a depressed portion is provided and a lid portion at one side, supports the piezoelectric resonator at another side, and is for taking the oscillation frequency to an outside of the sensing sensor. The depressed portion houses the oscillator circuit. The lid portion covers the depressed portion. The connection portion is disposed at the one side of the base and connected to a cooling mechanism for cooling the base from the one side. The temperature changing unit is interposed between the piezoelectric resonator and the base, so as to cool and heat the piezoelectric resonator and transfer a heat radiated for cooling the piezoelectric resonator from the other side of the base to the one side.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: February 23, 2021
    Assignee: NIHON DEMPA KOGYO CO., LTD.
    Inventors: Yuki Yanagisawa, Hiroyuki Kukita, Shohei Nakagawa
  • Publication number: 20200408724
    Abstract: To provide a technique for expanding a measurement dynamic range and performing a stable detection in a sensing sensor using a crystal resonator. A spacer is disposed between an oscillator circuit that oscillates a crystal resonator and a base body that cools an oscillator circuit to a cryogenic temperature, and an oscillator circuit board includes a heater resistor that heats the oscillator circuit. Therefore, the temperature of the oscillator circuit that does not fall below a functional limit temperature and is a low temperature as much as possible can be provided. A negative resistance of the oscillator circuit can be increased, the measurement dynamic range can be expanded, and the crystal resonator can be stably oscillated.
    Type: Application
    Filed: March 6, 2019
    Publication date: December 31, 2020
    Applicant: NIHON DEMPA KOGYO CO., LTD.
    Inventors: Hiroyuki KUKITA, Tsuyoshi SHIOBARA
  • Publication number: 20200378924
    Abstract: A sensing device that senses a substance to be sensed as a gas by causing a piezoelectric resonator to adsorb the substance to be sensed, includes: a substrate, a thermoelectric element unit, a support plate, and a base portion. A sensing module unit in which a substrate, a thermoelectric element unit, and a support plate are integrated is removably disposed to a base portion that performs at least one of heat supply and heat dissipation to the thermoelectric element unit.
    Type: Application
    Filed: May 26, 2020
    Publication date: December 3, 2020
    Applicants: NIHON DEMPA KOGYO CO., LTD., JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Hiroyuki KUKITA, Tsuyoshi SHIOBARA, Yuki YANAGISAWA, Shohei NAKAGAWA, Eiji MIYAZAKI, Yuta TSUCHIYA
  • Publication number: 20200274493
    Abstract: A sensing sensor includes an oscillator circuit, a base, a connection portion, and a temperature changing unit. The oscillator circuit oscillates the piezoelectric resonator. The base includes a base main body in which a depressed portion is provided and a lid portion at one side, supports the piezoelectric resonator at another side, and is for taking the oscillation frequency to an outside of the sensing sensor. The depressed portion houses the oscillator circuit. The lid portion covers the depressed portion. The connection portion is disposed at the one side of the base and connected to a cooling mechanism for cooling the base from the one side. The temperature changing unit is interposed between the piezoelectric resonator and the base, so as to cool and heat the piezoelectric resonator and transfer a heat radiated for cooling the piezoelectric resonator from the other side of the base to the one side.
    Type: Application
    Filed: February 26, 2020
    Publication date: August 27, 2020
    Applicant: NIHON DEMPA KOGYO CO., LTD.
    Inventors: Yuki YANAGISAWA, Hiroyuki KUKITA, Shohei NAKAGAWA
  • Publication number: 20200264054
    Abstract: To provide a temperature detector without possibility of interruption in temperature detection in detecting a temperature based on a change in oscillation frequency of a crystal element. First and second vibrating regions are formed on a crystal element, the first or the second vibrating region is oscillated with a third harmonic or a fundamental wave by switching switches. A data processing portion obtains frequency change rates of the third harmonic and the fundamental wave in the first vibrating region, and detects the temperature from a difference between them. Further, whether the oscillation of the first vibrating region is abnormal is monitored based on the measurement result of the frequency of the first vibrating region, and when the abnormality is determined, the temperature is detected from similar difference using the second vibrating region.
    Type: Application
    Filed: August 21, 2017
    Publication date: August 20, 2020
    Applicant: NIHON DEMPA KOGYO CO., LTD.
    Inventors: Hiroyuki KUKITA, Shunichi WAKAMATSU, Tsuyoshi SHIOBARA, Takayuki ISHIKAWA
  • Publication number: 20190265177
    Abstract: A substance detection system and a substance detection method are provided. The temperature identifying portion identifies a surface temperature of the quartz substrate, based on a difference between a deviation of the fundamental wave frequency from at least any predetermined reference fundamental wave frequency of the reference crystal resonator and the detecting crystal resonator and a deviation of the third harmonic frequency from a predetermined reference third harmonic frequency. The substance identifying portion identifies a temperature at which a contaminant attached to the detecting crystal resonator is desorbed from the detecting crystal resonator to identify the contaminant based on the temperature at which the contaminant is desorbed.
    Type: Application
    Filed: May 13, 2019
    Publication date: August 29, 2019
    Applicants: NIHON DEMPA KOGYO CO., LTD., JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Hiroyuki KUKITA, Shunichi WAKAMATSU, Tsuyoshi SHIOBARA, Takayuki ISHIKAWA, Eiji MIYAZAKI, Yuta TSUCHIYA
  • Patent number: 10302623
    Abstract: One side of the surfaces of the crystal resonator 4 including an adsorbing film 46 that absorbs a sensing object on an excitation electrode 42A is pressed with the channel forming member 5 using the upper-side cover body 21 to form a channel 57, which runs from one end side to the other end side on one side of surfaces of the crystal resonator 4. A depressed portion 84 is disposed in at least one of: a position opposed to the channel 57 and at a surface on an opposite side of the channel 57 in the channel forming member 5, and a position opposed to the channel 57 and at a surface on the opposite side of the channel 57 in the pressing member with respect to the channel forming member 5.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: May 28, 2019
    Assignee: NIHON DEMPA KOGYO CO., LTD.
    Inventor: Hiroyuki Kukita
  • Patent number: 10126268
    Abstract: A sensing sensor includes a first vibrating region, a second vibrating region, an adsorbing film, a blocking layer, a wiring board, a channel forming member arranged to cover a region of the one surface side of the wiring board to form a channel. The adsorbing film is arranged such that the adsorbing film is located in a region including the central portion in the front-rear direction of the one vibrating region. Assuming that the front end portion of the vibrating region is P1, the front end portion of the adsorbing film is P2, and the central portion of the vibrating region is C, the front end portion of the adsorbing film P2 satisfies a relational expression expressed as follows: (a distance from C to P1)×0.4?(a distance from P1 to P2)?(a distance from C to P1)×0.8.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: November 13, 2018
    Assignee: NIHON DEMPA KOGYO CO., LTD.
    Inventors: Wakako Shinobu, Hiroyuki Kukita, Shunichi Wakamatsu
  • Patent number: 9791412
    Abstract: A sensing device is provided that has satisfactory sensing accuracy when a crystal unit where an excitation electrode is formed on both upper and lower surfaces of a piezoelectric piece is used to sense a sensing object. Adsorption regions are arranged in two places so as to intersect a direction of flow of a fluid, thus each of the adsorption regions senses the sensing object and reference regions are individually provided in these adsorption regions. A difference ?f1 between the oscillation frequencies of the regions and a difference ?f2 between the oscillation frequencies of the regions are added, and based on the result of the addition, whether the sensing object is present or not and its concentration are detected.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: October 17, 2017
    Assignee: NIHON DEMPA KOGYO CO., LTD.
    Inventors: Hiroyuki Kukita, Shunichi Wakamatsu, Wakako Shinobu
  • Publication number: 20170284997
    Abstract: One side of the surfaces of the crystal resonator 4 including an adsorbing film 46 that absorbs a sensing object on an excitation electrode 42A is pressed with the channel forming member 5 using the upper-side cover body 21 to fonn a channel 57, which runs from one end side to the other end side on one side of surfaces of the crystal resonator 4. A depressed portion 84 is disposed in at least one of: a position opposed to the channel 57 and at a surface on an opposite side of the channel 57 in the channel forming member 5, and a position opposed to the channel 57 and at a surface on the opposite side of the channel 57 in the pressing member with respect to the channel forming member 5.
    Type: Application
    Filed: August 12, 2015
    Publication date: October 5, 2017
    Applicant: NIHON DEMPA KOGYO CO., LTD.
    Inventor: Hiroyuki KUKITA
  • Publication number: 20170184577
    Abstract: A sensing sensor includes a wiring board, a piezoelectric resonator, a channel forming member, a case body, and a regulating portion. The case body houses the wiring board, the piezoelectric resonator, and the channel forming member. The case body includes a window faced to a region including the output terminal on the another surface side of the wiring board and an injection port supplying a supply liquid to the one end side of the channel. The regulating portion is disposed in the case body. The regulating portion regulates the wiring board from the one surface side when the wiring board is pressed from the another surface side. The piezoelectric resonator is pressed against the surrounding portion by the output terminal being pressed from the another surface side.
    Type: Application
    Filed: December 23, 2016
    Publication date: June 29, 2017
    Applicant: NIHON DEMPA KOGYO CO., LTD.
    Inventor: Hiroyuki KUKITA
  • Publication number: 20170146490
    Abstract: A sensing sensor includes a first vibrating region, a second vibrating region, an adsorbing film, a blocking layer, a wiring board, a channel forming member arranged to cover a region of the one surface side of the wiring board to form a channel. The adsorbing film is arranged such that the adsorbing film is located in a region including the central portion in the front-rear direction of the one vibrating region. Assuming that the front end portion of the vibrating region is P1, the front end portion of the adsorbing film is P2, and the central portion of the vibrating region is C, the front end portion of the adsorbing film P2 satisfies a relational expression expressed as follows: (a distance from C to P1)×0.4?(a distance from P1 to P2)?(a distance from C to P1)×0.8.
    Type: Application
    Filed: November 16, 2016
    Publication date: May 25, 2017
    Applicant: NIHON DEMPA KOGYO CO., LTD.
    Inventors: Wakako SHINOBU, Hiroyuki KUKITA, Shunichi WAKAMATSU
  • Patent number: 9625420
    Abstract: A sensing sensor includes a wiring board, a piezoelectric resonator, a channel forming member, a channel, an effluent channel, a capillary member, and an absorbing member. The effluent channel is disposed at a downstream side of the channel. The effluent channel is configured to discharge the sample solution inside of the channel by capillarity. The capillary member is disposed at a downstream side of the effluent channel in contact with the sample solution flowing through an inside of the effluent channel. The capillary member is configured to cause the sample solution to flow through by the capillarity. The absorbing member is disposed at a downstream side of the capillary member. The absorbing member is configured to absorb the sample solution flowing through the capillary member.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: April 18, 2017
    Assignee: NIHON DEMPA KOGYO CO., LTD.
    Inventor: Hiroyuki Kukita
  • Patent number: 9164063
    Abstract: A sensing device is to be connected to a piezoelectric resonator for sensing a target substance in a sample fluid based on oscillation frequency of the piezoelectric resonator. The sensing device includes an oscillator circuit, a voltage supply unit, an information obtaining unit, and a voltage adjusting unit. The oscillator circuit is commonalized for a plurality kinds of piezoelectric resonators. The voltage supply unit is configured to supply a DC drive voltage to the oscillator circuit. The information obtaining unit is configured to obtain type information of a piezoelectric resonator which is connected to the oscillator circuit. The voltage adjusting unit is configured to adjust the DC drive voltage to a voltage corresponding to the connected piezoelectric resonator based on the type information obtained by the information obtaining unit.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: October 20, 2015
    Assignee: NIHON DEMPA KOGYO CO., LTD.
    Inventors: Hiroyuki Kukita, Shunichi Wakamatsu, Wakako Shinobu
  • Patent number: 9086338
    Abstract: To provide a sensing device that holds a piezoelectric sensor and a channel forming member placed on the sensor in a closely contacted state while maintaining a shape of space of a passage space formed inside the device. In a sensing device 1100 that senses a substance to be sensed based on a variation in an oscillation frequency caused by an absorption of the substance to be sensed in an absorption layer provided on a piezoelectric resonator 1720 of a piezoelectric sensor 1700, a holding member 1600 holds the piezoelectric sensor 1700 and a channel forming member 1730 that forms a passage space through which a sample fluid passes on an upper surface side of the sensor, in a vertically stacked state. A cover member 1510 is placed on the channel forming member 1730, and a pressing part 1350 which is raised/lowered by a first raising/lowering mechanism 1300 presses the cover member 1510 placed on the channel forming member 1730 downward with a previously set force.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: July 21, 2015
    Assignee: NIHON DEMPA KOGYO CO., LTD.
    Inventors: Wakako Shinobu, Hiroyuki Kukita, Tomoya Yorita, Shunichi Wakamatsu
  • Publication number: 20150090035
    Abstract: A sensing sensor includes a wiring board, a piezoelectric resonator, a channel forming member, a channel, an effluent channel, a capillary member, and an absorbing member. The effluent channel is disposed at a downstream side of the channel. The effluent channel is configured to discharge the sample solution inside of the channel by capillarity. The capillary member is disposed at a downstream side of the effluent channel in contact with the sample solution flowing through an inside of the effluent channel. The capillary member is configured to cause the sample solution to flow through by the capillarity. The absorbing member is disposed at a downstream side of the capillary member. The absorbing member is configured to absorb the sample solution flowing through the capillary member.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 2, 2015
    Inventor: HIROYUKI KUKITA
  • Publication number: 20140366611
    Abstract: A sensing device is provided that has satisfactory sensing accuracy when a crystal unit where an excitation electrode is formed on both upper and lower surfaces of a piezoelectric piece is used to sense a sensing object. Adsorption regions are arranged in two places so as to intersect a direction of flow of a fluid, thus each of the adsorption regions senses the sensing object and reference regions are individually provided in these adsorption regions. A difference ?f1 between the oscillation frequencies of the regions and a difference ?f2 between the oscillation frequencies of the regions are added, and based on the result of the addition, whether the sensing object is present or not and its concentration are detected.
    Type: Application
    Filed: June 9, 2014
    Publication date: December 18, 2014
    Inventors: HIROYUKI KUKITA, SHUNICHI WAKAMATSU, WAKAKO SHINOBU
  • Publication number: 20140250985
    Abstract: A sensing sensor includes a crystal element having a first excitation electrode, a second excitation electrode, and a common electrode, an adsorbing layer, a wiring board, and a channel forming member. The crystal element is secured to the wiring board so as to form a space at one surface side of the first vibrating region and the second vibrating region. The channel forming member is disposed to form a supply channel of sample solution upward of each of the first vibrating region and the second vibrating region. The channel forming member is disposed such that an inferior surface of a left edge and a right edge of the channel forming member is positioned on the common electrode. The channel forming member is formed such that an injection port of the sample solution and a discharge port of the sample solution are opposed to the crystal element.
    Type: Application
    Filed: March 4, 2014
    Publication date: September 11, 2014
    Applicant: Nihon Dempa Kogyo Co., Ltd.
    Inventors: WAKAKO SHINOBU, HIROYUKI KUKITA, SHUNICHI WAKAMATSU
  • Patent number: D755653
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: May 10, 2016
    Assignee: Nihon Dempa Kogyo Co., Ltd.
    Inventors: Kiyoto Shinmei, Shunichi Wakamatsu, Tsuyoshi Shiobara, Hiroyuki Kukita