Patents by Inventor Yutaka Nagai

Yutaka 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).

  • Publication number: 20220382934
    Abstract: An object of the invention is to efficiently and automatically generate a simulation model used for verification from 3D CAD information. In order to solve the above problem, the invention provides a simulation model generation device configured to identify a connection relation between part elements constituting the device. The simulation model generation device includes: a contact surface number determination unit configured to determine the number of contact surfaces between the part elements using structural model data in the device; a shared rotation axis determination unit configured to determine, using the structural model data, presence or absence of a shared rotation axis between the part elements; and a connection relation identification unit configured to identify a connection relation between the part elements indicating any one of non-contact, fixation, slide, and rotation according to the number of the contact surfaces and the presence or absence of a shared rotation axis.
    Type: Application
    Filed: May 10, 2022
    Publication date: December 1, 2022
    Inventors: Yutaka NAGAI, Sanato OHTOSHI, Kei UTSUGI
  • Publication number: 20220292418
    Abstract: An operation risk evaluation system includes: a model storage unit configured to store a surrogate model that is a learned model of a relationship between an input that is a first feature amount of the operation and an output that is a second feature amount of the operation calculated by a predetermined simulation of one of the steps, the learned model being configured to surrogate for the predetermined simulation in which an output corresponding to an input having the same value has indeterminity different for each input; a prediction unit configured to predict a plurality of the second feature amounts having indeterminity corresponding to the first feature amount having the same value in the step; and a risk evaluation unit configured to evaluate a risk of the operation in the step based on the plurality of second feature amounts having indeterminity predicted by the prediction unit.
    Type: Application
    Filed: February 23, 2022
    Publication date: September 15, 2022
    Inventors: Kei UTSUGI, Issei SUEMITSU, Sanato OHTOSHI, Yutaka NAGAI
  • Publication number: 20210291424
    Abstract: An embodiment of the present invention provides (i) a method for producing a thermoplastic adhesive product which can be continuously and automatically supplied and (ii) an apparatus for producing the thermoplastic adhesive product. The method includes the steps of: a) extruding a long object through a discharge hole of an extruder, the long object being made of a thermoplastic adhesive and having a string shape or a sheet shape; b) cooling the long object having been thus extruded; and c) collecting the long object having been thus cooled. The production apparatus (100) includes an extruder (101), cooling equipment (102), and a winder (107).
    Type: Application
    Filed: June 3, 2021
    Publication date: September 23, 2021
    Inventors: Hiroki IWASE, Yutaka NAGAI
  • Patent number: 10766148
    Abstract: A hand mechanism includes three-dimensional cams and claw portions configured to open and close in association with a rotary motion of the three-dimensional cams and achieves a compact and multifunctional configuration. A rotor shaft is a hollow shaft provided with a hollow shaft hole, is assembled in communication with a through hole formed in a cam base portion of a cam pedestal member, and is provided with a functional part in the hollow shaft hole.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: September 8, 2020
    Assignee: SHINANO KENSHI KABUSHIKI KAISHA
    Inventors: Sadaaki Watanabe, Kimihiro Takehana, Yutaka Nagai
  • Patent number: 10732181
    Abstract: Disclosed is a method for detecting lipid bilayer membrane particles or fragments thereof, having predetermined molecules existing on surfaces thereof, in a biological sample collected from a subject, the method comprising: adding to the biological sample a dye that stains a lipid bilayer membrane; adding a substance that specifically binds to the predetermined molecules; trapping the substance bound to the predetermined membrane molecules and separating unbound components; and detecting the separated stained lipid bilayer membrane particles or fragments thereof by measurement of the dye emission spectrum. The specific binding substance is conjugated to a magnetic bead or binds to a magnetic bead, the trapping and separating steps are performed magnetically, and the particle size of the magnetic bead is equal to or less than the minimum detection sensitivity of the measurement system.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: August 4, 2020
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Yutaka Nagai, Masashi Takao, Masami Ito
  • Patent number: 10663045
    Abstract: Provided is a screw shaft in a ball screw device. At least a part of the screw shaft includes a cylindrical body which is manufactured by a filament winding method or a sheet winding method, and a spiral member or a partitioned spiral member which is fixed to an outer circumferential surface of the cylindrical body and forms a thread groove.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: May 26, 2020
    Assignee: NSK LTD.
    Inventors: Kazunari Miyazaki, Keisuke Muto, Yutaka Nagai, Satoru Arai, Daisuke Maruyama, Masahiro Nobutomo
  • Publication number: 20190353230
    Abstract: A ball screw device includes: a threaded shaft; a nut; multiple first balls rollably arranged on a helical raceway composed of a helical groove of the threaded shaft and a helical groove of the nut; an inner ring raceway groove formed on an outer circumferential surface of one axial end of the threaded shaft; an outer ring having an outer ring raceway groove that faces the inner ring raceway groove; and multiple second balls rollably arranged between the inner ring raceway groove and the outer ring raceway groove. The ball screw device converts rotation of the threaded shaft into linear motion of the nut through the first balls rolling on the helical raceway while being subjected to a load. The outer ring has a rolling element insertion hole penetrating from its outer circumferential surface to the outer ring raceway groove and a lid configured to cover the rolling element insertion hole. An inner surface of the lid is formed into a concave shape to serve as part of the outer ring raceway groove.
    Type: Application
    Filed: November 10, 2017
    Publication date: November 21, 2019
    Inventors: Yosuke KAJIHARA, Kazuhito YAMAMOTO, Masahiro NOBUTOMO, Yutaka NAGAI, Yusuke WATARAI, Masahito MORIYAMA, Yoshiaki KATSUNO
  • Patent number: 10436699
    Abstract: An analyzing system includes an imaging cytometer having a first imaging section configured to perform an imaging of particles contained in an analyte sample to generate images, the imaging cytometer being configured to analyze the images generated by the first imaging section, and a blood cell analyzing apparatus configured to analyze particles contained in the analyte sample by at least one of an electrical resistance method and an optical analyzing method. One of the imaging cytometer and the blood cell analyzing apparatus has an analyzing section configured to produce a report of an analysis of the analyte sample based on particle information acquired by the imaging cytometer and particle information acquired by the blood cell analyzing apparatus.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: October 8, 2019
    Assignee: NIHON KOHDEN CORPORATION
    Inventor: Yutaka Nagai
  • Publication number: 20190248059
    Abstract: An embodiment of the present invention provides (i) a method for producing a thermoplastic adhesive product which can be continuously and automatically supplied and (ii) an apparatus for producing the thermoplastic adhesive product. The method includes the steps of: a) extruding a long object through a discharge hole of an extruder, the long object being made of a thermoplastic adhesive and having a string shape or a sheet shape; b) cooling the long object having been thus extruded; and c) collecting the long object having been thus cooled. The production apparatus (100) includes an extruder (101), cooling equipment (102), and a winder (107).
    Type: Application
    Filed: July 13, 2017
    Publication date: August 15, 2019
    Inventors: Hiroki IWASE, Yutaka NAGAI
  • Publication number: 20190144715
    Abstract: An object of the present invention is to provide a thermoplastic adhesive product that can be automatically and continuously supplied to a hot melt tank and that can be produced easily. Provided is a thermoplastic adhesive product which is a long object in the form of a string or a sheet including a thermoplastic adhesive and which is rollable.
    Type: Application
    Filed: March 8, 2017
    Publication date: May 16, 2019
    Inventors: Hiroki IWASE, Yutaka NAGAI
  • Publication number: 20190143534
    Abstract: The present disclosure provides a cam-type hand mechanism including a three-dimensional cam and claw portions configured to open and close in association with a rotary motion of the three-dimensional cam and achieving a compact and multifunctional configuration. A rotor shaft is a hollow shaft provided with a hollow shaft hole, is assembled in communication with a through hole formed in a cam base portion of a cam pedestal member, and is provided with a functional part in the hollow shaft hole.
    Type: Application
    Filed: November 16, 2018
    Publication date: May 16, 2019
    Inventors: Sadaaki WATANABE, Kimihiro TAKEHANA, Yutaka NAGAI
  • Patent number: 10107383
    Abstract: There is provided a ball screw that is used to apply a preload to balls and that has a configuration of achieving a balance between the cooling efficiency and ease of assembly and disassembly. To this end, the ball screw includes a screw shaft, and a plurality of nuts movable relative to the screw shaft in an axial direction. Each of the nuts includes flow channels, which are cooling mechanisms and which respectively serve as independent channels to allow a cooling medium to pass through them. These flow channels are provided symmetrically with respect to a space between the nuts, and are configured so that the cooling medium can independently circulate in each of the nuts.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: October 23, 2018
    Assignee: NSK Ltd.
    Inventors: Junji Minakuchi, Yutaka Nagai, Masashi Shindo
  • Publication number: 20180299452
    Abstract: Provided is a means by which a signal-to-noise ratio (S/N ratio) can be improved at the time of detection of lipid bilayer membrane particles (lipid vesicles) in which the amount of a surface antigen is small since the size of the particles is small and/or the amount of the particles existing in a sample is also small.
    Type: Application
    Filed: April 13, 2018
    Publication date: October 18, 2018
    Applicant: Nihon Kohden Corporation
    Inventors: Yutaka Nagai, Masashi Takao, Masami Ito
  • Publication number: 20180087636
    Abstract: Provided is a screw shaft in a ball screw device. At least a part of the screw shaft includes a cylindrical body which is manufactured by a filament winding method or a sheet winding method, and a spiral member or a partitioned spiral member which is fixed to an outer circumferential surface of the cylindrical body and forms a thread groove.
    Type: Application
    Filed: March 31, 2016
    Publication date: March 29, 2018
    Applicant: NSK LTD.
    Inventors: Kazunari MIYAZAKI, Keisuke MUTO, Yutaka NAGAI, Satoru ARAI, Daisuke MARUYAMA, Masahiro NOBUTOMO
  • Publication number: 20170023124
    Abstract: There is provided a ball screw that is used to apply a preload to balls and that has a configuration of achieving a balance between the cooling efficiency and ease of assembly and disassembly. To this end, the ball screw includes a screw shaft, and a plurality of nuts movable relative to the screw shaft in an axial direction. Each of the nuts includes flow channels, which are cooling mechanisms and which respectively serve as independent channels to allow a cooling medium to pass through them. These flow channels are provided symmetrically with respect to a space between the nuts, and are configured so that the cooling medium can independently circulate in each of the nuts.
    Type: Application
    Filed: February 25, 2014
    Publication date: January 26, 2017
    Inventors: Junji MINAKUCHI, Yutaka NAGAI, Masashi SHINDO
  • Publication number: 20160109353
    Abstract: An analyzing system includes an imaging cytometer having a first imaging section configured to perform an imaging of particles contained in an analyte sample to generate images, the imaging cytometer being configured to analyze the images generated by the first imaging section, and a blood cell analyzing apparatus configured to analyze particles contained in the analyte sample by at least one of an electrical resistance method and an optical analyzing method. One of the imaging cytometer and the blood cell analyzing apparatus has an analyzing section configured to produce a report of an analysis of the analyte sample based on particle information acquired by the imaging cytometer and particle information acquired by the blood cell analyzing apparatus.
    Type: Application
    Filed: October 16, 2015
    Publication date: April 21, 2016
    Inventor: Yutaka NAGAI
  • Patent number: 9286929
    Abstract: A method for performing recording on a multilayered optical disk which has three or more recordable or rewritable information recording layers with a first recording layer and a second recording layer located nearer to a light incident surface than the first recording layer, and which respectively has a first test area configured by a plurality of segments in the first recording layer and in the second recording layer, wherein a predetermined radial distance L is defined beforehand. When an arbitrary segment in the second test area is test-recorded, a segment in the first test area, the radial distance of which from the recorded test area in the second test area is within the range of the predetermined radial distance L, is set as a segment in which test recording is not performed.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: March 15, 2016
    Assignee: HITACHI CONSUMER ELECTRONICS CO., LTD.
    Inventors: Harukazu Miyamoto, Koichi Watanabe, Yutaka Nagai, Koichiro Nishimura, Takakiyo Yasukawa
  • Publication number: 20150362061
    Abstract: There is provided a ball screw device having a cooling mechanism of efficiently cooling down a bearing device supporting a screw shaft of a ball screw or vicinities of the bearing device. For this purpose, the ball screw device (1) includes the ball screw (10) and a bearing device (101) supporting at least one end of the screw shaft (110). The bearing device (101) includes a housing (130) rotatably supporting the screw shaft (110). The housing (130) has plural cooling through holes (170) penetrating in the axial direction and allowing passage of a cooling medium. In addition, a combination type of rolling bearings (120A, 120B) of the bearing device (101) is to be a DB type (back face combination type), which is a system of applying a preload by adding a compressive force in the axial direction to the inner ring side of the rolling bearings (120A, 120B).
    Type: Application
    Filed: January 22, 2014
    Publication date: December 17, 2015
    Applicant: NSK LTD.
    Inventor: Yutaka NAGAI
  • Patent number: 9146231
    Abstract: An object of the present invention is to provide a method which is capable of carrying out detection and evaluation of the vascular endothelial damage with a high degree of accuracy. According to an aspect of the present invention, there is provided a method for testing vascular endothelial damage with respect to a blood sample collected from living organism comprising the steps of: 1) detecting or determining quantitatively vascular endothelial cell-derived microparticle; and 2) detecting or determining quantitatively tissue factor-containing microparticle. Furthermore, according to another aspect of the present invention, there is provided a testing kit of vascular endothelial damage comprising a first antibody which specifically recognizes the vascular endothelium-derived microparticle, and a second antibody which specifically recognizes the tissue factor-containing microparticle.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: September 29, 2015
    Assignee: Nihon Kohden Corporation
    Inventors: Shuji Higashi, Yutaka Nagai, Shotaro Fujii
  • Patent number: 9101044
    Abstract: A circuit module includes a substrate, a mount component, a sealing body, a trench and a shield. The substrate has a mount surface. The mount component is mounted on the mount surface. The sealing body has a main surface and an outer peripheral surface, the sealing body sealing the mount component, the main surface sandwiching the mount component between the main surface and the mount surface, the outer peripheral surface covering the mount component on the mount surface. The trench has a groove-like shape, the trench being recessed from the main surface of the sealing body to the mount surface, the trench being formed to leave a space between the trench and the outer peripheral surface. The shield covers the main surface and the outer peripheral surface of the sealing body, the shield being filled in the trench.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: August 4, 2015
    Assignee: Taiyo Yuden Co., Ltd
    Inventors: Masaya Shimamura, Kenzo Kitazaki, Yutaka Nagai, Hiroshi Nakamura, Tetsuo Saji, Eiji Mugiya