Patents by Inventor Masashi Yamashita

Masashi Yamashita 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: 9194510
    Abstract: In the case that a lift amount of a second valve body for controlling a small flow rate is equal to or less than a predetermined amount, a pilot passage is closed by a pilot valve body, and a first valve port is closed by a first valve body for controlling a large flow rate, thereby taking a small flow rate control state in which a flow rate is controlled in correspondence to the lift amount of the second valve body, and in the case that the lift amount of the second valve body goes beyond the predetermined amount, the pilot valve body is moved up in conjunction with an upward movement of a valve shaft so as to open the pilot passage, thereby taking a large flow rate control state in which the first valve body opens the first valve port on the basis of this.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: November 24, 2015
    Assignee: FUJIKOKI CORPORATION
    Inventors: Yusuke Arai, Takeshi Kannoo, Masashi Yamashita
  • Publication number: 20150253551
    Abstract: Comprising, in order from an object side: a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; an aperture stop S; a third lens group G3 having positive refractive power; and a rear lens group GR; upon zooming from a wide-angle end state to a telephoto end state, at least the rear lens group GR being moved toward the object side, and a distance between the first lens group G1 and the second lens group G2, a distance between the second lens group G2 and the third lens group G3, and a distance between the third lens group G3 and the rear lens group GR being varied; upon focusing on from an infinitely distant object to a closely distant object, the third lens group G3 as a whole being moved in the direction of the optical axis; at least a portion of the rear lens group GR being moved as a vibration reduction lens group to have a component in a direction perpendicular to the optical axis; and the vibration reduction lens group having negative refractive
    Type: Application
    Filed: April 23, 2015
    Publication date: September 10, 2015
    Inventors: Akihiko OBAMA, Masashi YAMASHITA
  • Publication number: 20150217112
    Abstract: A rehabilitation system that assists an action of a paretic arm due to brain damage, such as a stroke, includes: a detecting unit configured to detect an assist action that a healthy arm assists the paretic arm; an assist unit configured to cause the paretic arm to carry out bending and stretching actions; an adjustment unit configured to adjust an operation timing, operation speed, bending load or stretching load of the assist unit in response to detection of the assist action by the detecting unit; and a control unit configured to cause the assist unit to operate in accordance with the operation timing, operation speed, bending load or stretching load, adjusted by the adjustment unit.
    Type: Application
    Filed: February 4, 2015
    Publication date: August 6, 2015
    Inventors: Shingo SHIMODA, Fady SK SHIBATA ALNAJJAR, Vincent BERENZ, Hitoshi YAMADA, Masashi YAMASHITA, Takashi IZUO, Soya TAKAGI
  • Publication number: 20150098784
    Abstract: A work vehicle includes: a hydraulic pump driven by an engine; a rotational speed detection unit that detects an actual rotational speed of the engine; an exhaust gas purification device that purifies nitrogen oxide in exhaust gas discharged from the engine using a reducing agent solution stored in a reducing agent tank; a torque control unit that decreases output torque of the engine according to decrease of a detected remaining amount of the reducing agent solution; and a storage device that stores a threshold value not less than an engine rotational speed at which the hydraulic pump starts discharge, wherein when the actual rotational speed of the engine is not more than the threshold value, the torque control unit does not decrease the output torque of the engine regardless of the remaining amount of the reducing agent solution detected by the remaining amount detection device.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 9, 2015
    Inventors: Koji HYODO, Atsushi SHIMAZU, Masashi YAMASHITA, Tetsuji TANAKA, Isamu AOKI, Shoroku KAWAHARA
  • Publication number: 20150086918
    Abstract: An electrostatic latent image developing toner includes toner particles. Each of the toner particles includes a toner core containing a binder resin and a releasing agent, and a shell layer coating the toner core. The releasing agent has a melting point Mpr of no less than 50° C. and no greater than 100° C. The releasing agent has a number average dispersion diameter of no less than 30 nm and no greater than 500 nm. The shell layer is made from a resin including a unit derived from a monomer of a thermosetting resin. The thermosetting resin is one or more amino resins from among a melamine resin, a urea resin, and a glyoxal resin.
    Type: Application
    Filed: September 25, 2014
    Publication date: March 26, 2015
    Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Toshiki TAKEMORI, Masashi YAMASHITA, Hiroki UEMURA, Yukinori NAKAYAMA, Masaki OKITA
  • Publication number: 20150043086
    Abstract: A compact zooming optical system, an optical apparatus and a method for manufacturing the zooming optical system having a vibration reduction function, a high zooming ratio, a wide-angle view and superb optical performance are provided, the system including, in order from an object side: a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; a third lens group G3 having positive refractive power; and a fourth lens group G4 having negative refractive power; upon zooming from a wide-angle end state to a telephoto end state, a distance between the first lens group G1 and the second lens group G2, a distance between the second lens group G2 and the third lens group G3 and a distance between the third lens group G3 and the fourth lens group G4 being respectively varied; the third lens group G3 having, in order from the object side, a first segment group G31 having positive refractive power and a second segment group G32; the second segment group G32 being m
    Type: Application
    Filed: August 29, 2014
    Publication date: February 12, 2015
    Inventor: Masashi YAMASHITA
  • Publication number: 20150005138
    Abstract: A rehabilitation device includes: an operation unit operated by a patient under rehabilitation; an operation amount detection unit that detects an operation amount of the operation unit; a driving unit that applies torque to the operation unit; a control unit that controls driving of the driving unit; and a movement state detection unit that detects a movement state of a moving part of the patient. The control unit calculates a target value of the operation amount to be performed on the operation unit based on the movement state detected by the movement state detection unit and a predetermined movement model and controls the driving unit so that the operation amount detected by the operation amount detection unit follows the calculated target value of the operation amount.
    Type: Application
    Filed: June 24, 2014
    Publication date: January 1, 2015
    Inventors: Hitoshi YAMADA, Masashi YAMASHITA
  • Publication number: 20120241024
    Abstract: In the case that a lift amount of a second valve body for controlling a small flow rate is equal to or less than a predetermined amount, a pilot passage is closed by a pilot valve body, and a first valve port is closed by a first valve body for controlling a large flow rate, thereby taking a small flow rate control state in which a flow rate is controlled in correspondence to the lift amount of the second valve body, and in the case that the lift amount of the second valve body goes beyond the predetermined amount, the pilot valve body is moved up in conjunction with an upward movement of a valve shaft so as to open the pilot passage, thereby taking a large flow rate control state in which the first valve body opens the first valve port on the basis of this.
    Type: Application
    Filed: March 19, 2012
    Publication date: September 27, 2012
    Applicant: FUJIKOKI CORPORATION
    Inventors: Yusuke ARAI, Takeshi Kannoo, Masashi Yamashita
  • Publication number: 20120231727
    Abstract: An association unit associates earthquake disaster information that a governmental agency, a municipality, or the like publishes with base station data including position information of base stations. A base station priority calculation unit, based on an association result by the association unit and the estimated number of users that are present in coverage of each of the base stations, assigns priority for recovery measures at the time of an earthquake disaster to the base stations, and causes a display unit to display the priority of the base stations thus calculated. Thus, it becomes possible to easily assign the priority of the base stations based on the earthquake disaster information that a governmental agency, a municipality, or the like publishes.
    Type: Application
    Filed: November 2, 2010
    Publication date: September 13, 2012
    Applicant: NTT DOCOMO, INC.
    Inventors: Tomohiro Nagata, Ichiro Okajima, Masashi Yamashita, Yuki Oyabu
  • Patent number: 8136812
    Abstract: Affords sheet stacking device that, in stacking sheets onto a loading tray, enables stacking of the sheets always in the correct posture regardless of the nature of the sheets' surface material. The sheet stacking device includes a tray unit located downstream of a sheet discharging port, a sheet-end regulating member provided on the tray unit, a conveying unit for transporting sheets carried out onto the tray unit though the sheet discharging port, toward the sheet-end regulating member, and a conveyance controller for controlling the conveying unit. In conveying toward the sheet-end regulating member a sheet having been carried onto the tray unit, the conveyance controller varies the running time during which the conveying unit applies conveyance force to the sheet, in accordance with the material nature of the sheet surface.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: March 20, 2012
    Assignee: Nisca Corporation
    Inventor: Masashi Yamashita
  • Patent number: 8001193
    Abstract: A data communications system which communicates data via a data communications network, includes: an information extraction unit configured to extract an extraction target from received data; an comparison information generator/transmitter unit configured to generate and transmit comparison information including the extraction target extracted by the information extraction unit; a comparison unit configured to compare the received comparison information with the received data; and a cancellation processor unit configured to delete the received data, when the received comparison information agrees with the received data.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: August 16, 2011
    Assignee: NTT DoCoMo, Inc.
    Inventors: Takeshi Sugiyama, Masaru Takahashi, Masashi Yamashita, Kazuo Sugiyama, Youji Oosako, Manhee Jo
  • Patent number: 7710956
    Abstract: A network management server includes an address manager and an address assignment direction transmitter. The address manager manages a first address, a second address and a third address of the destination mobile terminals in accordance with address assignment information received from a mobile node. The address assignment direction transmitter transmits an address assignment directions for directing a source access node to manage the first address and the second address of the destination mobile terminal, and to transmit an address assignment direction for directing a destination access node to manage the second address and the third address of the destination mobile terminal.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: May 4, 2010
    Assignee: NTT DoCoMo, Inc.
    Inventors: Toshihiro Suzuki, Satoshi Hiyama, Masashi Yamashita, Ken Igarashi, Shoichi Hirata
  • Patent number: 7643829
    Abstract: Time required for location registration is reduced and concentration of location update signals caused when a group moves is prevented. Each mobile node and a mobile router sends a location update request to a local location manager near to the area in which it exists, so that time required for location registration can be reduced, and it is possible to prevent pressure on wireless resources and temporary increase in communication traffic within a mobile network, which may be caused by concentration of location update signals when a group moves as in the case of a train with a lot of passengers having mobile nodes. Thereby, even if location registration is not correctly performed by a mobile router, which sends a location update request on behalf of mobile nodes existing in the space of a moving body, due to the communication condition or a failure, it can be dealt with.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: January 5, 2010
    Assignee: NTT DoCoMo, Inc.
    Inventors: Satoshi Hiyama, Toshihiro Suzuki, Masashi Yamashita
  • Patent number: 7519025
    Abstract: Use of finite wireless resources is minimized when paging is performed to an MN, even if a location manager does not retain correct location area information for the reason that a mobile router (MR), which performs location update (LU) on behalf of mobile nodes (MNs) existing in the space in a moving body, does not send an LU signal because it is active, for example. A flag indicating whether an MR#1 is dormant or active is retained in a location manager LM#1. When paging is performed to an MN#2 which is in a master-slave relationship with the MR#1, the LM#1 refers to the flag to determine the state of the MR#1. When the MR#1 is active, the LM#1 inquires of a routing manager RM#1 about routing address information for the MR#1 and performs paging using the information. Thus, it is possible to perform paging to the MN#2 which is in a master-salve relationship with the MR#1, without the MR#1, which is moving in an active state, sending an LU signal.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: April 14, 2009
    Assignee: NTT DoCoMo, Inc.
    Inventors: Satoshi Hiyama, Toshihiro Suzuki, Masashi Yamashita
  • Patent number: 7498980
    Abstract: A carrier phase GPS positioning device is disclosed, which acquires a carrier phase accumulation value of satellite signals at one time on the mobile station side, associates plural carrier phase accumulation values on the reference station side at plural times prior to the one time with the carrier phase accumulation value on the mobile station side, and estimates an integer ambiguity included in the carrier phase accumulation value of signals transmitted from the satellite received by the mobile station.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: March 3, 2009
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazunori Kagawa, Masashi Yamashita, Yasuhiro Tajima, Hirohisa Onome
  • Publication number: 20090039590
    Abstract: Affords sheet stacking device that, in stacking sheets onto a loading tray, enables stacking of the sheets always in the correct posture regardless of the nature of the sheets' surface material. The sheet stacking device includes a tray unit located downstream of a sheet discharging port, a sheet-end regulating member provided on the tray unit, a conveying unit for transporting sheets carried out onto the tray unit though the sheet discharging port, toward the sheet-end regulating member, and a conveyance controller for controlling the conveying unit. In conveying toward the sheet-end regulating member a sheet having been carried onto the tray unit, the conveyance controller varies the running time during which the conveying unit applies conveyance force to the sheet, in accordance with the material nature of the sheet surface.
    Type: Application
    Filed: August 6, 2008
    Publication date: February 12, 2009
    Applicant: NISCA CORPORATION
    Inventor: Masashi Yamashita
  • Patent number: 7347419
    Abstract: A sheet supplying device includes a stacker for placing sheets; a delivery device for separating and feeding the sheets on the stacker; a register device for temporarily holding a sheet; a sheet conveying guide for guiding the sheet from the register device to a processing position; a sheet sensor disposed between the delivery device and the register device for detecting the sheet; at least one driving device for driving the delivery device and the register device; a conveyance control device for controlling the driving device so that the delivery device and the register device form a loop of the sheet according to a signal from the sheet sensor and an overlap sensor disposed between the register device and the processing position for detecting overlapping of the sheet. An overlap determining device determines overlapping of the sheet according to signals from the sheet sensor and the overlap sensor.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: March 25, 2008
    Assignee: Nisca Corporation
    Inventors: Kazuhide Sano, Syunichi Hirose, Masashi Yamashita
  • Patent number: 7339654
    Abstract: A sheet conveying apparatus is provided including a sheet feed tray on which sheets of a plurality of sizes are placed. A conveying unit conveys a sheet on the sheet feed tray to a predetermined processing position. A sheet position detector has a plurality of light-emitting units respectively arranged at positions corresponding to different sheet widths and one light-receiving unit capable of moving to positions corresponding to the plurality of light-emitting units. A light reception position detector which detects the position of the light-receiving unit, and a control unit which selects one of the plurality of light-emitting units can also be provided.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: March 4, 2008
    Assignees: Konica Minolta Business Technologies, Inc., Nisca Corporation
    Inventors: Tsuyoshi Mizubata, Kiyoshi Hata, Masahiko Fukushima, Kazuhide Sano, Masashi Yamashita
  • Patent number: 7331578
    Abstract: A sheet feeding device includes a stacker on which sheets are placed, a sheet feeding device for separating and feeding a sheet from other sheets on the stacker, a sheet overlap sensing device placed in a sheet conveying path at a downstream side of the sheet feeding device, and a sheet sensing device for detecting whether the sheet is located in the sheet overlap sensing device. An error determining device determines whether the sheet overlap sensing device is operating normally.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: February 19, 2008
    Assignee: Nisca Corporation
    Inventors: Kazuhide Sano, Syunichi Hirose, Masashi Yamashita
  • Patent number: 7302262
    Abstract: A mobile communications control method of this invention controls mobile communication by a mobile terminal in a network in which a plurality of wireless systems are available. In the mobile communications control method, the mobile terminal performs location registration with a wireless system selected from among the wireless systems, based on at least one of a status of the network, a status of the mobile terminal, location information of the mobile terminal, a frequency of incoming call reception of the mobile terminal, and service area information of the wireless systems.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: November 27, 2007
    Assignee: NTT DoCoMo, Inc.
    Inventors: Yugo Watanabe, Masashi Yamashita, Satoshi Hiyama, Shoichi Hirata