Patents by Inventor Masashi Yamaguchi

Masashi Yamaguchi 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: 20150225012
    Abstract: An electric power steering device includes a motor, a drive pulley that is connected to the output shaft of the motor and includes helical teeth, a driven pulley that is arranged coaxially with a rack shaft and includes helical teeth, and a belt that is wound around these pulleys and includes helical teeth meshing with the respective helical teeth of both pulleys. Internal teeth on a belt each are formed to have a tooth thickness that is reduced toward both ends thereof along the width direction of the belt.
    Type: Application
    Filed: February 3, 2015
    Publication date: August 13, 2015
    Inventor: Masashi YAMAGUCHI
  • Patent number: 9103235
    Abstract: A first rod is rotatably connected to a first drive lever shaft and a first valve lever shaft. A second rod is rotatably connected to a second drive lever shaft and a second valve lever shaft. A first predetermined shape portion is formed at a location, which is spaced from an axis of an output shaft by a predetermined distance. A second predetermined shape portion is formed in a second drive lever and is contactable with the first predetermined shape portion. A spring is placed between the actuator and the second drive lever and urges the second drive lever in a predetermined direction, which coincides with a closing direction of a second valve and an approaching direction of the second predetermined shape portion toward the first predetermined shape portion.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: August 11, 2015
    Assignee: DENSO CORPORATION
    Inventors: Tetsuji Yamanaka, Etsugo Yanagida, Masashi Yamaguchi
  • Patent number: 9095477
    Abstract: A nonwoven sheet for use in absorbent articles such as disposable diapers which is capable of reducing the range of surface diffusion of, and reducing re-adhesion to the skin of, highly viscous fluid excretion. The nonwoven sheet has mutually perpendicular longitudinal, transverse and thickness directions, and has in the aforementioned thickness direction a front surface and a back surface opposite thereof. Ridges and grooves are formed alternately so as to extend in parallel in the aforementioned longitudinal direction and so as to form repeated undulations in the aforementioned transverse direction. The nonwoven sheet has a bottom surface which, when the aforementioned nonwoven sheet is placed on a horizontal surface with the back surface (opposite of the front surface in contact with the skin of the wearer) down, is the surface that contacts the aforementioned horizontal surface.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: August 4, 2015
    Assignee: Unicharm Corporation
    Inventors: Masashi Yamaguchi, Toru Oba, Akihiro Kimura, Katsuhiro Uematsu
  • Publication number: 20150114538
    Abstract: The present invention includes a run-flat tire comprising a plurality of turbulence generation ridges which extend on a surface of a tire side portion in a tire-radial direction and which are arranged at a pitch in a tire-circumferential direction and relationship Si>So is satisfied. Si is the sum of sidewall areas of all the turbulence generation ridges located at the inner side, in the tire-radial direction, of a maximum width position of the pneumatic tire. So is the sum of sidewall areas of all the turbulence generation ridges located at the outer side, in the tire-radial direction, of the tire maximum width position.
    Type: Application
    Filed: December 30, 2014
    Publication date: April 30, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Makoto TSURUTA, Masashi YAMAGUCHI, Atsushi MIYASAKA
  • Patent number: 9016340
    Abstract: The present invention includes a run-flat tire 1 comprising a plurality of turbulence generation ridges 20 which extend on a surface of a tire side portion 3 in a tire-radial direction and which are arranged at a pitch in a tire-circumferential direction and relationship Si>So is satisfied. Si is the sum of sidewall areas of all the turbulence generation ridges located at the inner side, in the tire-radial direction, of a maximum width position of the pneumatic tire. So is the sum of sidewall areas of all the turbulence generation ridges located at the outer side, in the tire-radial direction, of the tire maximum width position.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: April 28, 2015
    Assignee: Bridgestone Corporation
    Inventors: Makoto Tsuruta, Masashi Yamaguchi, Atsushi Miyasaka
  • Publication number: 20150060187
    Abstract: A steering apparatus includes a driving pulley, a driven pulley, a belt wound around the driving pulley and the driven pulley, and a ball screw mechanism that converts a rotation of the driven pulley into a reciprocating movement of a steering shaft. The ball screw mechanism includes a ball screw nut and a plurality of balls provided inside a spiral ball raceway. The ball race way is formed by a first thread groove formed at an outer periphery of the steering shaft and a second thread groove formed at an inner periphery of the ball screw nut. Outer teeth of the driving pulley and the driven pulley and inner teeth of the belt are helical teeth respectively having tooth traces twisted in a direction opposite to the first thread groove and the second thread groove.
    Type: Application
    Filed: August 7, 2014
    Publication date: March 5, 2015
    Inventor: Masashi YAMAGUCHI
  • Patent number: 8881359
    Abstract: A machine tool assembling apparatus and a method of assembling a machine tool using the machine tool assembling apparatus are provided. The machine tool assembling apparatus includes a table, a first support mechanism having an arm which is swingable toward and away from the table, and a second support mechanism. The first support mechanism is disposed between the table and the second support mechanism. The first support mechanism is rotated to bring the arm into facing relation to either the table or the second support mechanism.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: November 11, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Ryosuke Matsuoka, Jun Sugikawa, Masashi Yamaguchi, Takaki Nakajima
  • Publication number: 20140318510
    Abstract: A first rod is rotatably connected to a first drive lever shaft and a first valve lever shaft. A second rod is rotatably connected to a second drive lever shaft and a second valve lever shaft. A first predetermined shape portion is formed at a location, which is spaced from an axis of an output shaft by a predetermined distance. A second predetermined shape portion is formed in a second drive lever and is contactable with the first predetermined shape portion. A spring is placed between the actuator and the second drive lever and urges the second drive lever in a predetermined direction, which coincides with a closing direction of a second valve and an approaching direction of the second predetermined shape portion toward the first predetermined shape portion.
    Type: Application
    Filed: April 28, 2014
    Publication date: October 30, 2014
    Applicant: DENSO CORPORATION
    Inventors: Tetsuji YAMANAKA, Etsugo YANAGIDA, Masashi YAMAGUCHI
  • Publication number: 20140322046
    Abstract: In a valve drive apparatus, which drives a first valve and a second valve of a supercharger, a first rod is rotatably connected to a first valve lever shaft at one end part thereof to drive the first valve and is connected to a shaft at the other end part thereof, and a second rod is rotatably connected to a second valve lever shaft at one end part thereof to drive the second valve and is connected to a second member at the other end part thereof. A spring is placed between a first engaging part of the first member and a second engaging part of the second member and urges the first member and the second member to urge a first contact part of the first member and a second contact part of the second member toward each other.
    Type: Application
    Filed: April 28, 2014
    Publication date: October 30, 2014
    Applicant: DENSO CORPORATION
    Inventors: Masashi YAMAGUCHI, Etsugo YANAGIDA, Tetsuji YAMANAKA
  • Patent number: 8759598
    Abstract: An object of the present invention is to provide a process of producing propylene by contacting ethylene with a catalyst, where propylene is produced with high selectivity. The present invention relates to a production process of propylene, comprising contacting ethylene with a catalyst, wherein the catalyst comprises a zeolite as an active ingredient and an acid content in the outer surface of the zeolite is 5 % or less based on an acid content of the entire zeolite.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: June 24, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Mikio Hayashi, Masashi Yamaguchi, Yumiko Yoshikawa, Takahiko Takewaki, Tohru Setoyama
  • Publication number: 20140096634
    Abstract: A ball screw nut of a ball screw device is fastened to a motor shaft by engaging a male thread portion thereof with a female thread portion of the motor shaft. In a case where, in a movement pathway for balls, an area where the balls roll under load from a rack shaft and the ball screw nut is set as a load area, an area that does not receive the load is set as a no-load area, and areas for transition from the load area to the no-load area are set as transition areas, the male thread portion is formed such that the transition area on the nut-side joint portion-side closest to a seating surface does not overlap phase ranges of cut portions in a state where the ball screw nut is fastened to the motor shaft.
    Type: Application
    Filed: October 1, 2013
    Publication date: April 10, 2014
    Applicant: JTEKT CORPORATION
    Inventors: Satoshi MOTOYAMA, Masashi YAMAGUCHI
  • Patent number: 8647999
    Abstract: A method for manufacturing a catalyst, which comprises regenerating a catalyst comprising a CHA zeolite as an active ingredient and having an ethylene conversion lowered through reaction of producing propylene by bringing into contact with ethylene in a vapor phase, by bringing the catalyst into contact with a gas which does not comprise oxygen and comprises hydrogen having a hydrogen partial pressure of 0.01 MPa or more as an absolute pressure thereof.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: February 11, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Mikio Hayashi, Masahiro Hara, Masashi Yamaguchi, Yumiko Yoshikawa, Takahiko Takewaki, Tohru Setoyama, Naoyuki Sakamoto
  • Publication number: 20130333818
    Abstract: The present invention relates to a pneumatic tire 1 in which turbulent-flow generating projections 10 each extending from an inner circumference side to an outer circumference side are provided on a outer circumferential face 3a which is tire surface of tire side portion 3 at intervals in a tire circumferential direction. Each of the turbulent-flow generating projections 10 includes an edge portion 10g when being viewed in a cross-sectional shape taken along a direction perpendicular to an extending direction thereof, and a front wall angle ? formed between a front wall face 10a of each turbulent-flow generating projection 10 and the tire surface (outer circumferential face 3a) is set in the range of 70° to 110°, the front wall face being hit by an airflow.
    Type: Application
    Filed: August 16, 2013
    Publication date: December 19, 2013
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Masashi YAMAGUCHI
  • Patent number: 8522844
    Abstract: To provide a pneumatic tire having a tire side portion with an enhanced durability according to the present invention, a run flat tire (1) has a turbulent generating concavo-convex part (5) composed of grooves and ribs and extending along at least part of a tire side portion, and a pattern is set to the turbulent generating concavo-convex part (5), in which for the turbulent generating concavo-convex part (5), letting h be a height, p be a pitch, and w be a width, a relationship is met such that 1.0?p/h?50.0, and 1.0?(p?w)/w?100.0.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: September 3, 2013
    Assignee: Bridgestone Corporation
    Inventor: Masashi Yamaguchi
  • Publication number: 20130158497
    Abstract: A nonwoven sheet for use in absorbent articles such as disposable diapers which is capable of reducing the range of surface diffusion of, and reducing re-adhesion to the skin of, highly viscous fluid excretion. The nonwoven sheet has mutually perpendicular longitudinal, transverse and thickness directions, and has in the aforementioned thickness direction a front surface and a back surface opposite thereof. Ridges and grooves are formed alternately so as to extend in parallel in the aforementioned longitudinal direction and so as to form repeated undulations in the aforementioned transverse direction. The nonwoven sheet has a bottom surface which, when the aforementioned nonwoven sheet is placed on a horizontal surface with the back surface (opposite of the front surface in contact with the skin of the wearer) down, is the surface that contacts the aforementioned horizontal surface.
    Type: Application
    Filed: June 21, 2011
    Publication date: June 20, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Masashi Yamaguchi, Toru Oba, Akihiro Kimura, Katsuhiro Uematsu
  • Publication number: 20130123388
    Abstract: Provided are a fiber-reinforced thermoplastic resin composition excellent in terms of dispersion property, moldability, rigidity, and reinforcing property and a process for producing the resin composition. This fiber-reinforced thermoplastic resin composition comprises (a) a polyolefin, (b) a rubbery polymer, (c) spherical silica having a water content of 1,000 ppm or less, (d) ultrafine fibers of a thermoplastic polymer having amide groups in the main chain, and (e) a silane coupling agent, wherein the ingredient (d) has been dispersed as ultrafine fibers having an average diameter of 1 [mu]m or less in a matrix comprising the ingredients (a), (b), and (c), and the ingredients (a), (b), (c), and (d) have been chemically bonded through the ingredient (e).
    Type: Application
    Filed: July 13, 2011
    Publication date: May 16, 2013
    Applicant: Daimaru Sangyo Co., Ltd.
    Inventors: Hideo Kurihara, Masashi Yamaguchi, Noriaki Tsukuda
  • Publication number: 20130017370
    Abstract: A sheet of nonwoven fabric for use in absorbent articles such as disposal diapers, sanitary napkins, wipes, etc., the sheet of nonwoven fabric being suitable for holding high-viscosity excreta such as soft feces. The sheet of nonwoven fabric has, formed in a first surface thereof, a plurality of ridges and grooves which extend in the machine direction. The sheet comprises a first fibrous layer and a second fibrous layer, the first fibrous layer being located on the first-surface side and the second fibrous layer being located on the second-surface side, which is on the reverse side from the first surface. The second fibrous layer comprises fibers having the ability to be crimped, and the first fibrous layer comprises heat-fusible fibers which are not crimped at the crimping initiation temperature of the fibers having the ability to be crimped. In a plan view from the first-surface side, the peripheries of the ridges have a shape which is composed of repeated meanders.
    Type: Application
    Filed: March 10, 2011
    Publication date: January 17, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Masashi Yamaguchi, Toru Oba
  • Publication number: 20120331096
    Abstract: The telecommunications terminal is connected to a management server and a broadcast receiving terminal to communicate with each other. The broadcast receiving terminal stores an identifier to identify itself uniquely and the address of the server, which stores information about correspondence between the identifier and the address of a predetermined portal site. The telecommunications terminal includes: a processor which generates a first transmission request for transmission of the identifier and the server's address and a second transmission request for transmission of the portal site's address; and a communications unit that communicates with the broadcast receiving terminal and the server.
    Type: Application
    Filed: March 7, 2012
    Publication date: December 27, 2012
    Applicant: Panasonic Corporation
    Inventors: Masashi YAMAGUCHI, Kazuhiko KAWAMOTO
  • Publication number: 20120203048
    Abstract: A method for manufacturing a catalyst, which comprises regenerating a catalyst comprising a zeolite as an active ingredient and having an ethylene conversion lowered through reaction of producing propylene by bringing into contact with ethylene in a vapor phase, by bringing the catalyst into contact with a gas which does not comprise oxygen and comprises hydrogen having a hydrogen partial pressure of 0.01 MPa or more as an absolute pressure thereof.
    Type: Application
    Filed: February 10, 2012
    Publication date: August 9, 2012
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Mikio HAYASHI, Masahiro HARA, Masashi YAMAGUCHI, Yumiko YOSHIKAWA, Takahiko TAKEWAKI, Tohru SETOYAMA, Naoyuki SAKAMOTO
  • Patent number: D689867
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: September 17, 2013
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Masashi Yamaguchi, Yoshitomo Oota, Hiroshi Ito, Minoru Sashida, Kazuaki Sakuta, Yasushi Fujii