Patents by Inventor Hiroshi Yokoyama

Hiroshi Yokoyama 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: 20070270532
    Abstract: The polyvinyl chloride-based fiber of the present invention is formed of a vinyl chloride-based resin composition obtained by blending, with respect to (a) 100 parts by weight of a vinyl chloride-based resin, (b) 0.1 parts by weight to 0.6 parts by weight of a hydrotalcite-based thermostabilizer, (c) 0.1 parts by weight to 0.5 parts by weight of ?-diketone, (d) 0.2 parts by weight to 0.5 parts by weight of a calcium soap and a zinc soap, (e) 0.7 parts by weight to 1.7 parts by weight of a lubricant, and (f) 0.5 parts by weight to 5 parts by weight of a plasticizer. Thereby, the present invention provides a polyvinyl chloride-based fiber that has an excellent touch feeling as a fiber for hair, excellent transparency and a vivid color tone, and can be obtained by stable melt spinning with less occurrence of filament breakage.
    Type: Application
    Filed: September 29, 2005
    Publication date: November 22, 2007
    Applicant: KANEKA CORPORATION
    Inventors: Yasuo Ishibashi, Toshihiko Hirose, Hiroshi Yokoyama
  • Patent number: 7298429
    Abstract: A fast and highly practical photoinduced switching liquid crystal device is provided. In the photoinduced switching liquid crystal device, in-plane switching of an optical anisotropic axis of dichroic nematic liquid crystal is performed at a high speed by light.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: November 20, 2007
    Assignee: Japan Science and Technology Agency
    Inventors: Hiroshi Yokoyama, Jun Yamamoto, Lachezar Komitov
  • Patent number: 7295795
    Abstract: An image forming method begins with a first image transfer step for thermally transferring a first toner image from a first image carrier to a second image carrier contacting it. Subsequently, in a second image transfer step, the first toner image carried on the second image carrier and a second toner image newly formed on the first image carrier are thermally transferred to opposite sides of a recording medium substantially at the same time. Higher image transfer temperature is assigned to the second image transfer step than to the first image transfer step. An impurity collecting device is associated with a pair of registration rollers which stop the recording medium for a moment to thereby synchronize the recording medium to the toner image.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: November 13, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Koji Suzuki, Hideaki Mochimaru, Naoki Iwata, Kunihiko Tomita, Hiroshi Yokoyama, Norimasa Sohmiya, Shigeru Watanabe, Chiemi Kaneko, Yasukuni Omata, Hisao Murayama
  • Patent number: 7287972
    Abstract: To provide a mold clamping apparatus able to suppress spout of a molding material from between mating faces of dies and to extend the lifetime of the dies. A mold clamping apparatus has a control apparatus deciding a distribution of a load divided by a plurality of tie bars based on information concerning to the die and controlling pressure of driving oil of a cylinder chamber of each cylinder for mold clamping independently to become a load having a determined distribution.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: October 30, 2007
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Makoto Tsuji, Saburo Noda, Shinya Itani, Masaki Yashiro, Hiroshi Yokoyama
  • Patent number: 7288221
    Abstract: To provide a mold clamping apparatus that a new actuator is not necessary for a mold thickness adjustment and that the mold thickness adjustment can be performed at low cost. A mold clamping apparatus has a tie bar having a piston and a coupled groove, a cylinder for mold clamping that has the piston of the tie bar built in and that pressured driving liquid for generating mold clamping force is supplied, a half nut coupled with the tie bar releasably by meshing with the coupled groove, a position sensor detecting a position of a moving direction of the tie bar, a direction change valve changing a supply of the driving liquid between a first cylinder chamber and a second cylinder chamber, and a control apparatus positioning a position of the tie bar at a position that the half nut and the coupled groove are able to be meshed by controlling the direction change valve in response to the position of the tie bar detected by the position sensor.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: October 30, 2007
    Assignee: Toshiba Kakai Kabushiki Kaisha
    Inventors: Makoto Tsuji, Hiroshi Yokoyama, Shinya Itani
  • Publication number: 20070218159
    Abstract: The present invention provides a die plate and a mold clamping apparatus equipped with the die plate for a die casting machine and so on capable of reducing dimensions of die height as small as possible. (Solution) A fix die plate FXPL and a moving die plate MVPL of a mold clamping apparatus on a base BS place a main mold with versatility inside, respectively. A pair of insert dies FINS and MINS is carried in to a mold opened space without disturbing tie bars TBU or TED located in an upper portion or a side portion. The pair of insert dies are separated and fastened to each of the main mold with versatility. The die height becomes zero or very small when the moving die plate positions at a mold closing position, and as the result dimension of the mold clamping apparatus in the direction of mold opening and closing can be shortened. Also, particularly the moving die plate can be avoided to tilt.
    Type: Application
    Filed: May 15, 2007
    Publication date: September 20, 2007
    Applicant: TOSHIBA KIKAI KABUSHIKI KAISHA
    Inventors: Makoto Tsuji, Hiroshi Yokoyama, Shinya Itani
  • Publication number: 20070194616
    Abstract: The invention provides a reclining apparatus which can make a width of an apparatus small. The reclining apparatus of the present invention is provided with a first bracket (1) attached to a seat back (10), a second bracket (2) attached to a seat cushion (11), a first shaft (3) forming a rotation center of the first bracket (1), a spiral spring (5) spirally wound around the first shaft (3) and biasing a rotation in a forward direction of the first bracket (1), and a rotary damper (6) decelerating a rotating speed of the first bracket (1) against an biasing force of the spiral spring (5). The rotary damper (6) and the spiral spring (5) are arranged in parallel, and an arm (7) rotating a casing (6a) of the rotary damper (6) on the basis of a rotation of the first bracket (1) is provided between the rotary damper (6) and the second bracket (2).
    Type: Application
    Filed: February 21, 2007
    Publication date: August 23, 2007
    Applicant: NHK Spring Co., Ltd.
    Inventors: Takao FUKUKAWA, Masaaki Takii, Hiroshi Yokoyama, Nobuhito Kanae
  • Patent number: 7255401
    Abstract: A headrest stay for supporting a headrest is inserted in a headrest bush and is supported. A height adjusting mechanism is attached to the headrest bush at a position corresponding to an upper end portion of a seat back. A headrest removal prevention device for preventing the headrest from being removed is built in the headrest bush at a position inside the seat back. The height adjusting mechanism and the headrest removal prevention device are formed of the same component.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: August 14, 2007
    Assignee: NHK Spring Co, Ltd.
    Inventors: Hiroshi Yokoyama, Satoshi Katahira
  • Publication number: 20070181279
    Abstract: A method for removing a casted part, for use in a die casting machine comprises the steps of setting a position in which a chuck performs an operation to grasp a casted part attached to a movable mold as a position from which the casted part is to be removed, and setting a relative positional relationship between a handle portion which is a part of the casted part attached to the movable mold to be grasped by the chuck and a movable die plate. The method further comprises the step of advancing the chuck between the movable mold and the fixed mold and positioning the chuck at the position from which the casted part is to be removed, in parallel with the movement of the movable die plate.
    Type: Application
    Filed: December 22, 2006
    Publication date: August 9, 2007
    Applicant: Toshiba Kikai Kabushiki Kaisha
    Inventors: Masaki YASHIRO, Hiroshi Yokoyama
  • Publication number: 20070154648
    Abstract: There is provided a release agent spray method and apparatus which, by utilizing the servo function of a servo motor-driven, electrically-powered die clamping apparatus capable of positioning a movable die plate at any position in die opening/closing directions, makes it possible to shorten the cycle time of a spraying process and to simplify the construction of the spray apparatus.
    Type: Application
    Filed: December 22, 2006
    Publication date: July 5, 2007
    Applicant: Toshiba Kikai Kabushiki Kaisha
    Inventors: Masaki Yashiro, Hiroshi Yokoyama
  • Publication number: 20070114490
    Abstract: A smectic liquid crystal device and process for producing the same are provided to realize uniform orientation of a smectic liquid crystal with no nematic phase in a phase sequence represented by an antiferroelectric liquid crystal; and a process for producing the same. The process comprises the steps of inducing an isotropic phase-nematic phase-smectic phase as a phase sequence of mixture obtained by adding a photopolymerizable monomer liquid crystal exhibiting nematic phase to a smectic liquid crystal; and irradiating the mixture with UV rays so that the monomer is photopolymerized into a polymer to thereby form a smectic liquid crystal medium with uniform orientation structure.
    Type: Application
    Filed: August 8, 2003
    Publication date: May 24, 2007
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hirokazu Furue, Hiroshi Yokoyama
  • Publication number: 20070098883
    Abstract: The present invention provides a dispersion usable for forming an electroconductive layer having an extremely fine pattern and a high thickness/minimum width ratio in the cross-section, and which has a high fluidity enabling application of inkjet to draw a fine pattern at high accuracy and contains only metal nanoparticles as a conductive medium. According to the present invention, a metal nanoparticle dispersion suitable to multiple layered coating by jetting in the form of fine droplets is prepared by dispersing metal nanoparticles having an average particle size of 1 to 100 nm in a dispersion solvent having a boiling point of 80° C. or higher in such a manner that the volume percentage of the dispersion solvent is selected in the range of 55 to 80% by volume and the fluid viscosity (20° C.
    Type: Application
    Filed: September 10, 2004
    Publication date: May 3, 2007
    Inventors: Daisuke Itoh, Akihito Izumitani, Noriaki Hata, Yorishige Matsuba, Kazuhiro Murata, Hiroshi Yokoyama
  • Patent number: 7198656
    Abstract: There is disclosed a vacuum cleaner including a dust separation section which separates air and dust flowing toward an intake port of a motor blower through a connection port of a cleaner main body. The dust separation section includes an air path forming member which performs a separation function. The forming member includes an introductory port, a derivative port, and an opening disposed between these. In the separation function, while dust-containing air flows toward the derivative port from the introductory port, a part of the air is sucked by the motor blower through the opening. Accordingly, the air is separated from the dust which goes straight in the air path forming member with inertia.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: April 3, 2007
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Ritsuo Takemoto, Masatoshi Tanaka, Hiroshi Yokoyama, Hitoshi Suzuki, Kiyoshi Ebe, Yoshihiro Tsuchiya, Ai Tanaka, Yasushi Nakatogawa, Ikuo Oshima, Yusuke Kinoshita, Yutaka Maeda
  • Patent number: 7197269
    Abstract: An image transferring device of the present invention includes a first and a second intermediate image transfer body whose surfaces endlessly move while forming a nip in contact with each other. When a sheet nipped by the nip is being conveyed toward a side downstream of the nip in the direction in which the above surfaces move, a first toner image transferred from an image carrier to the second intermediate image transfer body via the first intermediate image transfer body beforehand is transferred to one side of the sheet. At the same time, a second toner image transferred from the image carrier to the first image transfer body beforehand is transferred to the other side of the sheet. One of the two intermediate image transfer bodies is less deformable than the other intermediate image transfer body in the direction of thickness.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: March 27, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasukuni Omata, Hideaki Mochimaru, Chiemi Kaneko, Koji Suzuki, Naoki Iwata, Kunihiko Tomita, Hiroshi Yokoyama, Norimasa Sohmiya, Shigeru Watanabe, Hisao Murayama
  • Publication number: 20070030429
    Abstract: A liquid crystal display device that can be fabricated more simply as compared with a conventional device and suitably used in a liquid crystal display television satisfying both high pixel transmittance and wide viewing angle display characteristics is provided. The liquid crystal display device includes a pair of substrates including at least one transparent substrate, a liquid crystal layer interposed between the pair of substrates, and a liquid crystal alignment layer interposed between the liquid crystal layer and at least any one of the pair of substrates. On the liquid crystal alignment layer, a plurality of closed regions having a liquid crystal alignment direction different from the surrounding liquid crystal alignment direction are arranged. In the liquid crystal display element, each of the closed regions has such a shape that the head and tail are distinguishable along the surrounding liquid crystal alignment direction.
    Type: Application
    Filed: September 13, 2004
    Publication date: February 8, 2007
    Applicant: JAPAN SCIENCE AND TECHNOLOGY
    Inventors: Jong-Hyun Kim, Makoto Yoneya, Hiroshi Yokoyama
  • Publication number: 20070017190
    Abstract: A vacuum cleaner includes a separator case, a motor-driven blower, and a separator. The separator has a separating chamber configured to separate, by using an inertial force, dust from air drawn into the separator case. A dust-collecting section collects the dust separated from air by the separator. A filter catches the dust that has passed through the separator. The dust caught by the filter is dropped by a dust-dropping mechanism. The separator case has a dust-discharging port for guiding the dust dropped from the filter into the separating chamber. The vacuum cleaner further has a shield member that can move between a first position and a second position. At the first position, the shield member connects the dust-discharging port to the separating chamber. At the second position, the shield member disconnects the dust-discharging port from the separating chamber.
    Type: Application
    Filed: July 17, 2006
    Publication date: January 25, 2007
    Inventors: Ritsuo Takemoto, Hiroshi Yokoyama, Masatoshi Tanaka, Ai Tanaka, Mai Matsuno, Yasushi Takai, Yoshihiro Tsuchiya
  • Patent number: 7166245
    Abstract: Target velocity data D14 specifying injection operation required for a injection cylinder unit is set in advance, the injection operation is performed actually, command data D17 given to the injection cylinder unit during the injection operation and detected velocity data D15 indicating the operation performed by the injection cylinder unit are recorded, correction value data D18 is calculated from a difference between the detected velocity data D15 and the target velocity data D14 to correct the command data D17 of the previous injection operation by using the correction value, auxiliary amplifier command data D19 is generated as the command data for the next injection operation, and the injection cylinder unit is operated by giving the generated auxiliary amplifier command data at the time of the next injection operation.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: January 23, 2007
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Hiroshi Yokoyama, Yuji Kaneko
  • Publication number: 20060286301
    Abstract: A method of preparing substrates, including the steps of depositing metal particulates into a pillar form at a prescribed position of a substrate (1) by the use of a fine inkjet method, and then sintering the resultant to form a metal pillar (2).
    Type: Application
    Filed: September 10, 2004
    Publication date: December 21, 2006
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE, HARIMA CHEMICALS, INC.
    Inventors: Kazuhiro Murata, Hiroshi Yokoyama, Daisuke Itoh, Akihito Izumitani, Noriaki Hata, Yosishige Matsuba
  • Patent number: 7142034
    Abstract: Positive charges of a sensor element are stored in a capacitor for converting a voltage, are converted into a positive voltage by an amplifier, and then are outputted. When the polarity of the charges of the sensor element are inverted to be negative, the charges inversely flow from the capacitor for converting the voltage and feed back to an equivalent capacitor of the sensor element. The output of the amplifier reduces and returns to a zero-point. An automatic correcting circuit makes an FET conductive and the charges are discharged in order to prevent the fluctuation of the zero-point level due to the negative drift.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: November 28, 2006
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Hajime Kashiwase, Hiromichi Watanabe, Hiroshi Yokoyama
  • Publication number: 20060254745
    Abstract: (Problem to be solved) The present invention provides a die plate and a mold clamping apparatus equipped with the die plate for a die casting machine and so on capable of reducing dimensions of die height as small as possible. (Solution) A fix die plate FXPL and a moving die plate MVPL of a mold clamping apparatus on a base BS place a main mold with versatility inside, respectively. A pair of insert dies FINS and MINS is carried in to a mold opened space without disturbing tie bars TBU or TBD located in an upper portion or a side portion. The pair of insert dies are separated and fastened to each of the main mold with versatility. The die height becomes zero or very small when the moving die plate positions at a mold closing position, and as the result dimension of the mold clamping apparatus in the direction of mold opening and closing can be shortened. Also, particularly the moving die plate can be avoided to tilt.
    Type: Application
    Filed: May 2, 2006
    Publication date: November 16, 2006
    Applicant: TOSHIBA KIKAI KABUSHIKI KAISHA
    Inventors: Makoto Tsuji, Hiroshi Yokoyama, Shinya Itani