Patents by Inventor Kazuhiro Nagai

Kazuhiro Nagai 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: 11953924
    Abstract: In order to prevent unnatural behavior of a calculated flow rate, provided is a fluid control device in which a fluid control valve and upstream and downstream pressure sensors are provided on a flow path. The device includes a calculation unit configured to calculate a flow rate based on measured pressures; and an output unit configured to output the calculated flow rate, and exhibit a zero output function of outputting a zero value regardless of the calculated flow rate when the valve is in a closed state. The device is further configured to switch between execution and stop of the zero output function, and when the valve is in an open state and a difference between the measured pressures of the pressure sensors is larger than a threshold, stop the zero output function and cause the flow rate output unit to output the calculated flow rate.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: April 9, 2024
    Assignee: HORIBA STEC, Co., Ltd.
    Inventors: Sota Matsumoto, Kentaro Nagai, Yosuke Hisamori, Kazuhiro Matsuura
  • Publication number: 20240079177
    Abstract: A multilayer coil component includes an element body, a plurality of coil conductors, a first resistive layer, and a second resistive layer. The plurality of coil conductors are disposed in the element body and electrically connected to each other. The plurality of coil conductors include a first coil conductor and a second coil conductor adjacent to each other. The first resistive layer and the second resistive layer oppose each other between the first coil conductor and the second coil conductor. The first resistive layer is in contact with the first coil conductor.
    Type: Application
    Filed: July 26, 2023
    Publication date: March 7, 2024
    Applicant: TDK CORPORATION
    Inventors: Yusuke NAGAI, Kazuhiro EBINA, Takahiro SATO, Masaki TAKAHASHI, Takashi ENDO, Yuya ISHIMA, Kosuke ITO, Takuya MIYASHITA
  • Publication number: 20220395297
    Abstract: An internal fixation member set includes an internal fixation member, an inner member, and an outer member. The outer member has a first opening and a second opening, and rotatably retains a head of the inner fixation member. The inner member is inside the outer member and movable between a first position farther from the head and a second position nearer the second opening than the first position. The head has a first rotation range with the inner member at the first position and a second rotation range with the inner member at the second position. The second rotation range is smaller than the first rotation range with an interference between interference parts. A reference rotational position at which the head is insertable into or extractable from the outer member is included in the first rotation range and is not included in the second rotation range.
    Type: Application
    Filed: November 25, 2020
    Publication date: December 15, 2022
    Inventors: Fumiya NAKADA, Kazuhiro NAGAI
  • Patent number: 10461722
    Abstract: A ring oscillator is configured with a multiple number of logic inverting circuits in a ring shape and generates multi-phase clock signals. A period measuring unit measures a period of a reference clock inputted thereto by the multi-phase clock signals of the ring oscillator and outputs a measured period as a period data value. A frequency spreading calculation unit calculates a frequency spreading command value in accordance with a frequency spreading rate, a frequency spreading period and the period data value of the period measuring unit, which are inputted. A pulse generation unit generates a clock pulse corresponding to the frequency spreading command value in accordance with a data value determined by addition of the frequency spreading command value to the period data value.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: October 29, 2019
    Assignee: DENSO CORPORATION
    Inventors: Kazuhiro Nagai, Takuya Harada
  • Publication number: 20190165798
    Abstract: A ring oscillator is configured with a multiple number of logic inverting circuits in a ring shape and generates multi-phase clock signals. A period measuring unit measures a period of a reference clock inputted thereto by the multi-phase clock signals of the ring oscillator and outputs a measured period as a period data value. A frequency spreading calculation unit calculates a frequency spreading command value in accordance with a frequency spreading rate, a frequency spreading period and the period data value of the period measuring unit, which are inputted. A pulse generation unit generates a clock pulse corresponding to the frequency spreading command value in accordance with a data value determined by addition of the frequency spreading command value to the period data value.
    Type: Application
    Filed: February 1, 2019
    Publication date: May 30, 2019
    Inventors: Kazuhiro NAGAI, Takuya HARADA
  • Patent number: 9291175
    Abstract: An electrically actuated booster performs displacement control such that the relative displacement relationship between an input member and an assist member is variable according to the absolute displacement of the input member. A target displacement that makes variable the relative displacement relationship between an input piston and a booster piston is set according to a detection signal from a potentiometer (86), and displacement control is performed so that the relative displacement between the two pistons becomes equal to the target displacement on the basis of a signal from a relative displacement sensor (100) that detects the relative displacement between the two pistons.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: March 22, 2016
    Assignee: HITACHI, LTD.
    Inventors: Yukio Ohtani, Junichi Ikeda, Kazuhiro Nagai
  • Publication number: 20130291534
    Abstract: An electrically actuated booster performs displacement control such that the relative displacement relationship between an input member and an assist member is variable according to the absolute displacement of the input member. A target displacement that makes variable the relative displacement relationship between an input piston and a booster piston is set according to a detection signal from a potentiometer (86), and displacement control is performed so that the relative displacement between the two pistons becomes equal to the target displacement on the basis of a signal from a relative displacement sensor (100) that detects the relative displacement between the two pistons.
    Type: Application
    Filed: June 28, 2013
    Publication date: November 7, 2013
    Inventors: Yukio OHTANI, Junichi IKEDA, Kazuhiro NAGAI
  • Patent number: 8500213
    Abstract: An electrically actuated booster performs displacement control such that the relative displacement relationship between an input member and an assist member is variable according to the absolute displacement of the input member. A target displacement that makes variable the relative displacement relationship between an input piston and a booster piston is set according to a detection signal from a potentiometer (86), and displacement control is performed so that the relative displacement between the two pistons becomes equal to the target displacement on the basis of a signal from a relative displacement sensor (100) that detects the relative displacement between the two pistons.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: August 6, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Yukio Ohtani, Junichi Ikeda, Kazuhiro Nagai
  • Publication number: 20090115242
    Abstract: An electrically actuated booster capable of obtaining various desired brake characteristics and improving brake feeling performs displacement control such that the relative displacement relationship between an input member and an assist member is variable according to the absolute displacement of the input member. A target displacement that makes variable the relative displacement relationship between an input piston and a booster piston is set according to a detection signal from a potentiometer (86) (input absolute displacement detecting means), and displacement control is performed so that the relative displacement between the two pistons becomes equal to the target displacement on the basis of a signal from a relative displacement sensor (100) that detects the relative displacement between the two pistons.
    Type: Application
    Filed: September 26, 2006
    Publication date: May 7, 2009
    Inventors: Yukio Ohtani, Junichi Ikeda, Kazuhiro Nagai
  • Publication number: 20040090140
    Abstract: An axial-gap motor comprising a base, a shaft, a stator frame, a plurality of electromagnet units, bearings, a rotor frame, and a plurality of permanent magnet units, an rotary encoder, and a drive unit. The rotor frame is spaced from the stator frame by a predetermined distance. The permanent magnet units oppose the electromagnet units across a predetermined axial gap. From the output of the rotary encoder, the drive unit supplies an excitation current to the electromagnet units, causing the magnetic poles of the units to repulse those of the permanent magnet units. The magnetic-field centerline that passes the center of each electromagnet unit intersects, at a predetermined angle, with the magnetic-field centerline that passes the center of one permanent magnet unit.
    Type: Application
    Filed: October 31, 2003
    Publication date: May 13, 2004
    Inventors: Emil Nai Hong Lai, Akiko Aw, Kazuhiro Nagai, Kazuhiro Matsuyama, Atsushi Matsuyama
  • Patent number: 6458352
    Abstract: The present invention relates to an organic controller capable of controlling redox reaction at a low cost in a simple manner, the organic controller comprising a combination of two or more substances selected from vitamins and vitamin-like substances, a combination of one or more substances selected from vitamins and vitamin-like substances and one or more substances selected from polyphenols, a combination of one or more substances selected from vitamins and vitamin-like substances and one or more substances selected from enzymes, or a combination of one or more substances selected from vitamins and vitamin-like substances, one or more substances selected from polyphenols and one or more substances selected from enzymes, as the effective component.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: October 1, 2002
    Inventors: Kazuhiro Nagai, Masachika Hirose
  • Publication number: 20020096864
    Abstract: In a head-protecting airbag apparatus where an airbag body inflated in a curtain configuration is mounted in a folded state along a roof side rail across at least a center pillar, the airbag body includes an upper portion folded in a bellows, and a lower portion subjected to one of turning-back performed toward an occupant compartment inner side and rolling-up performed towards the occupant compartment inner side. Accordingly, even when there is a vehicle occupant compartment inner side protrusion such as a slip joint in a vehicle, the airbag body is inflated and expanded so as to cover the vehicle occupant compartment inner side protrusion from the above or ride on the same. As a result, the lower portion of the airbag body is hard to be caught up by the vehicle occupant compartment inner side protrusion, thereby improving a expanding performance of the airbag body.
    Type: Application
    Filed: March 22, 2002
    Publication date: July 25, 2002
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toshiyuki Asano, Etsuji Saito, Minoru Chida, Kazuhiro Nagai, Hiroyuki Okamoto
  • Patent number: 6371512
    Abstract: In a head-protecting airbag apparatus where an airbag body inflated in a curtain configuration is mounted in a folded state along a roof side rail across at least a center pillar, the airbag body includes an upper portion folded in a bellows, and a lower portion subjected to one of turning-back performed toward an occupant compartment inner side and rolling-up performed towards the occupant compartment inner side. Accordingly, even when there is a vehicle occupant compartment inner side protrusion such as a slip joint in a vehicle, the airbag body is inflated and expanded so as to cover the vehicle occupant compartment inner side protrusion from the above or ride on the same. As a result, the lower portion of the airbag body is hard to be caught up by the vehicle occupant compartment inner side protrusion, thereby improving a expanding performance of the airbag body.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: April 16, 2002
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toshiyuki Asano, Etsuji Saito, Minoru Chida, Kazuhiro Nagai, Hiroyuki Okamoto
  • Publication number: 20010016654
    Abstract: The present invention relates to an organic controller capable of controlling redox reaction at a low cost in a simple manner, the organic controller comprising a combination of two or more substances selected from vitamins and vitamin-like substances, a combination of one or more substances selected from vitamins and vitamin-like substances and one or more substances selected from polyphenols, a combination of one or more substances selected from vitamins and vitamin-like substances and one or more substances selected from enzymes, or a combination of one or more substances selected from vitamins and vitamin-like substances, one or more substances selected from polyphenols and one or more substances selected from enzymes, as the effective component.
    Type: Application
    Filed: January 23, 2001
    Publication date: August 23, 2001
    Inventors: Kazuhiro Nagai, Masachika Hirose