Patents by Inventor Masahiro Kurihara

Masahiro Kurihara 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: 11401923
    Abstract: A capacity control valve includes: a valve housing having a Pc port, a Ps port and a Pd port; a main valve element which includes a main valve portion coming contacting and separating from a main valve seat opening and closing communication between the Pd port and the Pc port by a drive force of a solenoid; an intermediate communication path communicating the Pc port with the Ps port; and a pressure-sensitive valve opening and closing the intermediate communication path by an ambient pressure, in which the valve housing have a differential pressure valve housed therein, the differential pressure valve including a differential pressure valve element and opening and closing a communication between the Pc port and the Ps port by the differential pressure valve element moved by an operation force of an operation member operated by a discharge pressure Pd from the Pd port.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: August 2, 2022
    Inventors: Masahiro Hayama, Yoshihiro Ogawa, Keigo Shirafuji, Kohei Fukudome, Takahiro Ejima, Daichi Kurihara, Wataru Takahashi
  • Patent number: 11401922
    Abstract: A displacement control valve includes a housing a first, a second, and a third chamber; a valve body having a first reciprocating valve part that opens or closes discharge paths in the first chamber; and a solenoid that applies electromagnetic force to the valve body in the direction that closes the first valve part. The control valve has a spool valve part formed on the external circumference of the valve body and a spool seating part formed on the internal circumference of the valve housing and that is opened while the first valve part is closed and vice versa upon reciprocation of the valve body to control the rate of flow between a control chamber and an inlet chamber.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: August 2, 2022
    Inventors: Daichi Kurihara, Kohei Fukudome, Masahiro Hayama, Keigo Shirafuji
  • Patent number: 11100705
    Abstract: An acquisition unit acquires design data which is three-dimensional data indicating a terrain. A gradient identification unit identifies a gradient of each of the plurality of polygons configuring the design data. An attribute setting unit sets an attribute for each of the plurality of polygons based on the gradient.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: August 24, 2021
    Assignee: Komatsu LTD
    Inventors: Masahiro Kurihara, Mitsuhiro Aoki
  • Patent number: 11014537
    Abstract: A distribution information acquisition unit is configured to acquire distribution information including identification information of a user as a distribution destination of setting information which is used for access to a work vehicle. An access information acquisition unit is configured to acquire access information including identification information of the user who accesses the work vehicle. A fraudulence determination unit is configured to compare the identification information related to the access information with the identification information related to the distribution information to determine whether or not fraudulent access has occurred.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: May 25, 2021
    Assignee: Komatsu Ltd.
    Inventors: Tsuyoshi Tanaka, Koichi Shima, Naohiko Kikuchi, Masahiro Kurihara
  • Patent number: 10997889
    Abstract: A position/pose acquisition unit acquires a position and a pose of a viewpoint in a real space. A site data disposition unit disposes site data which is three-dimensional data representing a shape of a construction site in a virtual space on the basis of the position and the pose of the viewpoint. A machine data disposition unit disposes machine data which is three-dimensional data representing a shape of a work machine at a position corresponding to the site data in the virtual space. A rendering unit renders the disposed machine data.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: May 4, 2021
    Assignee: KOMATSU LTD.
    Inventors: Yoshiyuki Onishi, Masahiro Kurihara
  • Publication number: 20200126464
    Abstract: A position/pose acquisition unit acquires a position and a pose of a viewpoint in a real space. A site data disposition unit disposes site data which is three-dimensional data representing a shape of a construction site in a virtual space on the basis of the position and the pose of the viewpoint. A machine data disposition unit disposes machine data which is three-dimensional data representing a shape of a work machine at a position corresponding to the site data in the virtual space. A rendering unit renders the disposed machine data.
    Type: Application
    Filed: June 27, 2018
    Publication date: April 23, 2020
    Inventors: Yoshiyuki Onishi, Masahiro Kurihara
  • Publication number: 20200114874
    Abstract: A distribution information acquisition unit is configured to acquire distribution information including identification information of a user as a distribution destination of setting information which is used for access to a work vehicle. An access information acquisition unit is configured to acquire access information including identification information of the user who accesses the work vehicle. A fraudulence determination unit is configured to compare the identification information related to the access information with the identification information related to the distribution information to determine whether or not fraudulent access has occurred.
    Type: Application
    Filed: July 20, 2018
    Publication date: April 16, 2020
    Applicant: KOMATSU LTD.
    Inventors: Tsuyoshi TANAKA, Koichi SHIMA, Naohiko KIKUCHI, Masahiro KURIHARA
  • Publication number: 20190304174
    Abstract: An acquisition unit acquires design data which is three-dimensional data indicating a terrain. A gradient identification unit identifies a gradient of each of the plurality of polygons configuring the design data. An attribute setting unit sets an attribute for each of the plurality of polygons based on the gradient.
    Type: Application
    Filed: December 22, 2017
    Publication date: October 3, 2019
    Inventors: Masahiro Kurihara, Mitsuhiro Aoki
  • Publication number: 20180218301
    Abstract: A construction management system includes a construction plan data calculation unit configured to calculate, based on construction plan data indicating a construction plan of a construction site, the construction plan data having been calculated based on a current landform and a design landform of the construction site and original unit data indicating a specific condition of a work device, necessary work device data indicating a work device necessary for executing construction of the construction site using the construction plan, and a construction plan data output unit configured to cause an output device to output the necessary work device data.
    Type: Application
    Filed: October 5, 2016
    Publication date: August 2, 2018
    Inventors: Chikashi Shike, Yuichi Nemoto, Masahiro Kurihara
  • Publication number: 20180137446
    Abstract: A construction management system includes: a current topography data acquisition unit configured to acquire current topography data indicating a current topography of a construction site; a design topography data acquisition unit configured to acquire design topography data indicating a design topography of the construction site; a construction plan data calculation unit configured to calculate construction plan data including earth cutting plan data and earth banking plan data by collating the current topography data with the design topography data; and a construction plan data output unit configured to output the construction plan data to an output device. The construction plan data output unit causes an output device to output at least two of the design topography data, the cutting plan data, and the banking plan data in parallel.
    Type: Application
    Filed: April 28, 2016
    Publication date: May 17, 2018
    Inventors: Chikashi Shike, Yuichi Nemoto, Masahiro Kurihara
  • Patent number: 8889349
    Abstract: A method for accurately counting desired cells or microorganisms (viable bacteria) in a sample fluid in which contaminants are included is provided. One or plural types of membrane-permeable fluorochromes whose fluorescence amount is amplified by binding to a nucleic acid and glycerin are added to a sample fluid containing cells or microorganisms to be counted and allowed to stand for a certain time. Glycerin is added before or after or simultaneously with the mixing of the sample fluid and the fluorochrome(s). The cells or microorganisms to be counted are counted by staining the cells or microorganisms to be counted, followed by irradiating with light having a specific wavelength to detect the fluorescence emitted from the cells or microorganisms.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: November 18, 2014
    Assignee: Hitachi Engineering & Services Co., Ltd.
    Inventors: Kei Takenaka, Hideki Nakamoto, Kazuo Takei, Masahiro Kurihara, Yuusuke Watanabe, Hisao Saito, Yasuhiko Sasaki
  • Patent number: 8404480
    Abstract: Provided are a microorganism testing chip capable of suppressing self-fluorescence and enhancing mass productivity, and a microorganism testing device using the same. The microorganism testing chip includes a main body and a fungus body detection unit mounted on the main body. The main body has a detection window frame portion which is a through-hole or a pass-through groove. The fungus body detection unit is disposed to cover the detection window frame portion and has a fungus body detection flow path connected to flow paths provided in the main body. The fungus body detection unit includes a cover member and a flow path member, and is formed by attaching these two members to each other. The flow path member has a groove. By attaching the two members to each other, the groove of the flow path member serves as the fungus body detection flow path.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: March 26, 2013
    Assignee: Hitachi Engineering & Services Co., Ltd.
    Inventors: Kei Takenaka, Yasuhiko Sasaki, Hideki Nakamoto, Kazuo Takei, Masahiro Kurihara, Yuusuke Watanabe, Hisao Saito
  • Publication number: 20110104685
    Abstract: A means for accurately counting desired cells or microorganisms (viable bacteria) in a sample fluid in which contaminants are included is provided. One or plural types of membrane-permeable fluorochromes whose fluorescence amount is amplified by binding to a nucleic acid and glycerin are added to a sample fluid containing cells or microorganisms to be counted and allowed to stand for a certain time. Glycerin is added before or after or simultaneously with the mixing of the sample fluid and the fluorochrome(s). The cells or microorganisms to be counted are counted by staining the cells or microorganisms to be counted, followed by irradiating with light having a specific wavelength to detect the fluorescence emitted from the cells or microorganisms.
    Type: Application
    Filed: October 28, 2010
    Publication date: May 5, 2011
    Inventors: Kei Takenaka, Hideki Nakamoto, Kazuo Takei, Masahiro Kurihara, Yuusuke Watanabe, Hisao Saito, Yasuhiko Sasaki
  • Publication number: 20100273208
    Abstract: To eliminate the necessity of a dedicated optical system and the flowing of fluorescent microparticles for aligning excitation light with a flat plate-shaped flow cell which internally includes a flow path, a microorganism testing apparatus includes: a first detector that detects fluorescence emitted from microorganisms flowing through a detection flow path when a microorganism detection unit included in a microorganism testing chip is irradiated with excitation light, and converts the fluorescence to an electrical signal; and a second detector that detects scattered light similarly emitted from the microorganisms flowing through the detection flow path, and converts the scattered light to an electrical signal. The alignment of the detection flow path is performed in the direction of the optical axis of the excitation light by controlling and moving a stage having the microorganism testing chip mounted thereon based on the intensity of fluorescence detected by the first detector.
    Type: Application
    Filed: April 26, 2010
    Publication date: October 28, 2010
    Inventors: Kei Takenaka, Hideki Nakamoto, Kazuo Takei, Masahiro Kurihara, Yuusuke Watanabe, Hisao Saito
  • Publication number: 20100093072
    Abstract: Provided are a microorganism testing chip capable of suppressing self-fluorescence and enhancing mass productivity, and a microorganism testing device using the same. The microorganism testing chip includes a main body and a fungus body detection unit mounted on the main body. The main body has a detection window frame portion which is a through-hole or a pass-through groove. The fungus body detection unit is disposed to cover the detection window frame portion and has a fungus body detection flow path connected to flow paths provided in the main body. The fungus body detection unit includes a cover member and a flow path member, and is formed by attaching these two members to each other. The flow path member has a groove. By attaching the two members to each other, the groove of the flow path member serves as the fungus body detection flow path.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 15, 2010
    Inventors: Kei TAKENAKA, Yasuhiko SASAKI, Hideki NAKAMOTO, Kazuo TAKEI, Masahiro KURIHARA, Yuusuke Watanabe, Hisao SAITO
  • Publication number: 20090291488
    Abstract: A microorganism testing device includes: an analysis chip that includes a fluid specimen container, a reaction container for causing the fluid specimen to react with a reagent solution, a microorganism detection flow path, and an alignment reagent container for holding an alignment reagent to be used in an alignment work of the microorganism detection flow path; a moving stage for holding the analysis chip; and a detection device including a light source for irradiating the detection flow path with light, and an optical detector for detecting light from the detection flow path and converting the light into electric signals, in which the alignment reagent container is provided on a downstream side of the specimen container and the reaction container.
    Type: Application
    Filed: May 20, 2009
    Publication date: November 26, 2009
    Inventors: Kei TAKENAKA, Yasuhiko SASAKI, Hideki NAKAMOTO, Kazuo TAKEI, Masahiro KURIHARA, Yuusuke WATANABE
  • Publication number: 20080145857
    Abstract: A system for detecting microorganisms from a solid or liquid sample by using gene analysis is provided. A microorganism detection system in the present invention has an analysis chip and an analyzer. Necessary reagents are stored in advance in the analysis chip. A sample is injected into the analysis chip, which is then inserted into the analyzer. The analyzer has a pressure source for supplying a gas under pressure to the analysis chip and a low pressure source for discharging a gas from the analysis chip. The analysis chip has a sample reservoir and the sample reservoir has a filter. Crushed substance contained in the sample is removed by the filter. The analysis chip is further provided with valves in an upstream channel and a downstream channel of the sample reservoir. The valves have a polymer filled in the channel. The polymer is dissolved by heating to open the valve.
    Type: Application
    Filed: December 13, 2007
    Publication date: June 19, 2008
    Inventors: Hisao SAITO, Masahiro KURIHARA
  • Publication number: 20070281350
    Abstract: A bacteria trapping apparatus comprises a nozzle for introducing air, a trapping chamber disposed on an exit side of the nozzle, and a trapping material disposed inside the trapping chamber for trapping bacteria. The air introduced into the trapping chamber is discharged by a discharge unit towards the side opposite to the nozzle. The trapping material, a trapping container, and a holding member together constitute a trapping unit, which preferably comprises a bacteria trapping chip that can be mounted on analysis equipment.
    Type: Application
    Filed: September 28, 2005
    Publication date: December 6, 2007
    Inventors: Hisao Inami, Masahiro Kurihara
  • Publication number: 20070280861
    Abstract: Embodiments of the invention provide a water treatment method and water treatment device capable of automatically tracking the frequency of ultrasonic waves and automatically controlling their amplitude such that optimal cavitation is generated. In one embodiment, a water treatment method of sterilizing water containing microbes comprises supplying ultrasonic vibration to the water to be treated by driving and controlling a transducer of a sterilization cell using a signal; detecting an amplitude of the transducer and a frequency of the signal applied to the transducer; and controlling the amplitude and a vibration frequency of the transducer to target values in accordance with the detected transducer amplitude and the detected signal frequency.
    Type: Application
    Filed: September 26, 2005
    Publication date: December 6, 2007
    Applicant: Hitachi, Ltd.
    Inventors: Masahiro Kurihara, Kazuo Takei, Kunio Hashiba, Kageyoshi Katakura
  • Publication number: 20070249039
    Abstract: It is an object of the present invention to shorten the operation time from sampling through to genetic test, and enable the detection of a minute creature with good accuracy. Provided is minute creature detection system in which treatments from gene extraction to detection of are conducted on an analytic chip, in which the analytic chip 300 contains a sample reservoir 315, a gene extraction area 320 filled with a gene binding carrier, a waste solution chamber 330 filled with absorbent, a washing solution storage chamber 340 which stores washing solution, an eluenting solution storage chamber 370 which stores a gene eluenting solution, a gene-amplification reagent storage chamber 380 which stores a gene-amplification reagent, and a reaction chamber 395 which amplifies and detects the gene, each of which is formed by a channel, and a weir having a channel in at least either the sample reservoir 315 or the reagent storage chamber 380 which contracts and expands.
    Type: Application
    Filed: January 26, 2007
    Publication date: October 25, 2007
    Inventors: Mitsuhiro Matsuzawa, Hisao Inami, Yasuhiko Sasaki, Masahiro Kurihara