Patents by Inventor Masaki Sugiyama

Masaki Sugiyama 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).

  • LUBRICATING DEVICE FOR FOUR-STROKE ENGINE
    Publication number: 20120017865
    Abstract: A lubricating device for a four-stroke engine is provided that circulates oil while lubricating each part in a valve operating chamber and a crank chamber by supplying the oil to the valve operating chamber and the crank chamber using pressure fluctuation in the crank chamber, the pressure fluctuation being caused by reciprocating motion of a piston. The valve operating chamber is formed by mounting a valve operating chamber cover, and a suction passageway that sucks the oil in the valve operating chamber is provided by forming a groove on an inner surface of the valve operating chamber cover and sealing the groove with a sealing member shaped to fit the groove.
    Type: Application
    Filed: July 6, 2011
    Publication date: January 26, 2012
    Applicant: MAKITA CORPORATION
    Inventors: Masaki SUGIYAMA, Tetsuya HASEGAWA
  • POWDER FOR DUST CORE, DUST CORE MADE OF THE POWDER FOR DUST CORE BY POWDER COMPACTION, AND METHOD OF PRODUCING THE POWDER FOR DUT CORE
    Publication number: 20120012777
    Abstract: A powder for dust core including a soft magnetic metal powder and a silicon impregnated layer made of silicon concentrated in a surface layer of the soft magnetic metal powder, in which a silicon dioxide powder is diffusion-bonded to a surface of the silicon impregnated layer to form a diffusion-bonded part while a part of the silicon dioxide powder is impregnated and diffused in the silicon impregnated layer and the other part of the same protrudes from the surface of the silicon impregnated layer. The diffusion-bonded part creates a gap with respect to another powder for dust core, thereby providing increased specific resistance.
    Type: Application
    Filed: September 21, 2010
    Publication date: January 19, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki Sugiyama, Toshiya Yamaguchi, Shota Ohira, Takeshi Hattori, Yusuke Oishi
  • LIQUID TANK FOR WORKING MACHINE ENGINE AND LIQUID TANK CAP
    Publication number: 20120012587
    Abstract: A liquid tank cap for a working machine engine is provided. The liquid tank cap opens and closes a filling opening of a tip end portion of a refilling pipe of a liquid tank. The liquid tank cap includes an upper wall that covers the filling opening, a fitting portion that engages with an inner surface of the filling opening and protrudes from the upper wall, and a peripheral wall that covers an outer circumference of the refilling pipe in a state where the liquid tank cap is attached to the filling opening.
    Type: Application
    Filed: June 7, 2011
    Publication date: January 19, 2012
    Applicant: MAKITA CORPORATION
    Inventors: Masaki SUGIYAMA, Tetsuya HASEGAWA
  • Optical modulator and optical transmitter
    Patent number: 8098997
    Abstract: A reduction in size and cost of an optical modulator is achieved with a simple configuration, while improving the modulation characteristics. An optical modulator modulates light branched by an optical coupler and then couples the light via the optical coupler. The optical coupler is formed in a substrate having electro-optic effects. An optical waveguide is formed in the substrate and, includes a turnback section and ends into which the light branched by the optical coupler is input. A signal electrode is provided in the substrate along the optical waveguide. A modulation signal to modulate the light passing through the optical waveguide is input to the signal electrode.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: January 17, 2012
    Assignee: Fujitsu Limited
    Inventor: Masaki Sugiyama
  • Electronic device
    Patent number: 8086078
    Abstract: An electronic device in which a signal electrode has a bent portion. Earth electrodes are formed with the signal electrode between. A width of a gap at the bent portion between the signal electrode and each earth electrode is narrower than a width of a gap at both ends of the bent portion between the signal electrode and each earth electrode.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: December 27, 2011
    Assignee: Fujitsu Limited
    Inventor: Masaki Sugiyama
  • OPTICAL WAVEGUIDE, OPTICAL MODULATOR AND OPTICAL COUPLER
    Publication number: 20110305412
    Abstract: An optical waveguide formed in a substrate including: a curved waveguide; and a splitter that is coupled to the curved waveguide and branches, wherein a low refraction index portion having an effective refraction index that is lower than that of a start point of the curved waveguide on an opposite side of the splitter is provided in a waveguide extending from the start point of the curved waveguide to the splitter.
    Type: Application
    Filed: March 1, 2011
    Publication date: December 15, 2011
    Applicant: Fujitsu Optical Components Limited
    Inventor: Masaki SUGIYAMA
  • Optical modulator
    Patent number: 8078015
    Abstract: In an optical modulator, lights that have been branched by an input optical branching section are input via curved waveguides to a plurality of optical modulation sections arranged in parallel on the same substrate. In the optical modulation sections, optical branching sections of an MZ type optical waveguide are arranged shifted to an output side in the longitudinal direction (x direction) of the substrate, corresponding to an arrangement of input ends of signal electrodes. As a result, even if the input ends of the signal electrodes of the respective optical modulation sections are arranged side by side with a predetermined spacing on one side face of the substrate, input light can be applied to the respective optical modulation sections at low loss, without incurring an increase in the drive voltage.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: December 13, 2011
    Assignee: Fujitsu Limited
    Inventor: Masaki Sugiyama
  • METHOD OF MANUFACTURING POWDER FOR DUST CORE, DUST CORE MADE OF THE POWDER FOR DUST CORE MANUFACTURED BY THE METHOD, AND APPARATUS FOR MANUFACTURING POWDER FOR DUST CORE
    Publication number: 20110284794
    Abstract: To provide a method of manufacturing a powder for dust core capable of preventing generation of secondary particles during a siliconizing treatment and improving quality and productivity of the powder for dust core, a dust core made of the powder for dust core manufactured by the method, and an apparatus for manufacturing the powder for dust core, of a powder mixture comprising a soft magnetic metal powder and a powder for siliconizing including silicon dioxide, only the soft magnetic metal powder is heated by induction heating to transmit heat from the surface of the soft magnetic metal powder to the powder for siliconizing, thereby releasing a silicon element from the powder for siliconizing and diffusing and impregnating the silicon element into the surface of the soft magnetic metal powder to form a silicon impregnated layer.
    Type: Application
    Filed: March 2, 2010
    Publication date: November 24, 2011
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki Sugiyama, Toshiya Yamaguchi, Shouta Ohira
  • METHOD FOR PRODUCING DUST CORE
    Publication number: 20110274576
    Abstract: An object of the present invention is to provide a method for producing a dust core wherein generation of iron oxide at grain boundaries in the dust core is unlikely to take place upon annealing of the dust core subjected to compaction, thus allowing excellent electromagnetic characteristics to be realized. Also, the following is provided: a method for producing a dust core, which comprises: a step of molding a magnetic powder comprising a powder for a dust core formed with an iron-based magnetic powder coated with a silicone resin into a dust core via compaction; and a step of annealing the dust core via heating so as to cause the silicone resin contained in the dust core to be partially formed into a silicate compound, wherein annealing of the dust core is carried out at a dew point of an inert gas of ?40° C. or lower in an inert gas atmosphere in the annealing step.
    Type: Application
    Filed: July 22, 2011
    Publication date: November 10, 2011
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki SUGIYAMA, Toshiya YAMAGUCHI, Shinjiro SAIGUSA, Mitsutoshi AKIYAMA
  • DEVICE FOR MOUNTING WIRELESS DEVICE CASE
    Publication number: 20110248133
    Abstract: First mounting ring (340) and second mounting ring (360) are fixed to wireless device case (200) using fastening screws (347, 367). First mounting ring (340) and second mounting ring (360) are fitted to measurement display section (104) from above, and co-mounting bolt (301) is passed through rings (340, 360) to fasten the rings together. This configuration allows a wireless device to be disposed independent of a meter, and the wireless device can be easily mounted to the meter.
    Type: Application
    Filed: February 26, 2010
    Publication date: October 13, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Masaki Sugiyama, Nobuyuki Mase, Takayuki Matsumoto, Jyunichi Saito
  • ENGINE-DRIVEN CUTTER
    Publication number: 20110214297
    Abstract: A handheld engine-driven cutter is provided with a disk blade and a main body that drives the disk blade. The main body comprises a four-stroke engine, an oil supplying opening from which engine oil is supplied, and an oil exhausting opening from which the engine oil is exhausted. In this engine cutter, the oil supplying opening and the oil exhausting opening are both disposed on one side of the main body where one end of a driving axis of the four-stroke engine is located.
    Type: Application
    Filed: February 24, 2011
    Publication date: September 8, 2011
    Applicant: MAKITA CORPORATION
    Inventors: Masaki SUGIYAMA, Tetsuya HASEGAWA, Masaki KONDO, Tomonobu NASHIMOTO, Masayoshi OKUMI, Katsumi TOZAWA
  • ENGINE-DRIVEN CUTTER
    Publication number: 20110214298
    Abstract: A handheld engine-driven cutter is provided with a disk blade and a four-stroke engine that drives the disk blade. By employing the four-stroke engine, exhaustion of unburned gas and fuel consumption can be reduced. The engine cutter is further provided with a filter through which air provided to the four-stroke engine passes, a carburetor that mixes fuel and the air that passed through the filter, and a casing that houses the filter and the carburetor. The filter and the carburetor are arranged to align on a straight line along a direction of flow of the air passing through the filter and the carburetor.
    Type: Application
    Filed: February 24, 2011
    Publication date: September 8, 2011
    Applicant: MAKITA CORPORATION
    Inventors: Masaki SUGIYAMA, Tetsuya HASEGAWA, Masaki KONDO, Tomonobu NASHIMOTO, Masayoshi OKUMI, Takashi MIYAZAKI
  • MACH-ZEHNDER MODULATOR
    Publication number: 20110194802
    Abstract: A mach-zehnder optical modulator includes a substrate having electrooptical effect, wherein: the substrate has an inputting waveguide portion, two intermediate waveguide portions, an outputting waveguide portion and a sub optical waveguide portion, the inputting waveguide portion being branched and coupled to the two intermediate waveguide portions, the two intermediate waveguide portions being combined and coupled to the outputting waveguide portion, the sub optical waveguide being provided on at least one side of the outputting optical waveguide portion and having a given distance from the outputting optical waveguide portion, the sub optical waveguide portion guiding an off-light emitted from a combining portion of the two intermediate waveguide portions; and a width of a starting point of the sub optical waveguide portion is larger than the outputting waveguide portion.
    Type: Application
    Filed: January 10, 2011
    Publication date: August 11, 2011
    Applicant: Fujitsu Optical Components Limited
    Inventors: Masaki SUGIYAMA, Yoshihiko Yoshida, Yoshitada Kawashima, Toyokazu Sasaki
  • OPTICAL DEVICE AND OPTICAL TRANSMITTER
    Publication number: 20110188799
    Abstract: An optical device includes a substrate having an electro-optical effect; a main waveguide provided on the substrate; a first Mach-Zehnder part having first waveguides provided on the substrate and coupled with the main waveguide, and first DC electrodes provided between the first waveguides and on the first waveguides and used to generate DC electric fields in the first waveguides; and second Mach-Zehnder parts respectively associated with the first waveguides and comprising second waveguides coupled with each of the first waveguides and second DC electrodes used to generate DC electric fields in the second waveguides, at least one of the second Mach-Zehnder parts being configured to have no second DC electrode provided between the second waveguides and have the second DC electrodes on the second waveguides.
    Type: Application
    Filed: January 6, 2011
    Publication date: August 4, 2011
    Applicant: Fujitsu Optical Components Limited
    Inventor: Masaki SUGIYAMA
  • SUBSTRATE HEATING APPARATUS, SUBSTRATE HEATING METHOD AND SUBSTRATE PROCESSING SYSTEM
    Publication number: 20110183279
    Abstract: A substrate heating apparatus includes a container configured to be maintained in a depressurized state; and a substrate mounting table having a plurality of substrate support pins on its upper surface. The substrate mounting table is configured to mount a substrate while providing a gap between the upper surface of the substrate mounting table and the substrate. The substrate heating apparatus further includes a heater configured to heat the substrate through the substrate mounting table; a pressure regulator configured to regulate a pressure in the container; a temperature controller configured to control an output of the heater so as to control a temperature of the substrate mounting table; and a pressure controller configured to control the pressure regulator so as to control the pressure in the container.
    Type: Application
    Filed: January 26, 2011
    Publication date: July 28, 2011
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Tomoya OKUBO, Masaki SUGIYAMA
  • Optical waveguide device and producing method thereof
    Patent number: 7953305
    Abstract: An optical waveguide device includes; a substrate having an electro-optic effect, and a first optical waveguide and a second optical waveguide formed substantially in parallel on a top face of the substrate. A groove is formed for cutting only the first optical waveguide, of the first optical waveguide and the second optical waveguide. The groove penetrates from the top face to a bottom face of the substrate. Such a groove can be formed for example by fixing a side face of the substrate on the second optical waveguide side to a supporting base of a dicing machine so that the first optical waveguide is positioned on an upper side and the second optical waveguide is positioned on a lower side, and advancing the dicing saw from the bottom face side to the top face side of the substrate.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: May 31, 2011
    Assignee: Fujitsu Limited
    Inventor: Masaki Sugiyama
  • OPTICAL MODULATOR AND OPTICAL TRANSMITTER
    Publication number: 20110081107
    Abstract: An optical modulator including: a substrate which has electro-optic effect; a Mach-Zehnder optical interferometer which is formed in the substrate and which includes a first waveguide and a second waveguide; a signal electrode which applies an electrical field to the Mach-Zehnder optical interferometer through being supplied with an electric signal corresponding to a signal for optical modulation; a ground electrode formed apart from the signal electrode; and a conductor section which is narrow in a middle thereof along the light propagating direction and which gradually becomes wider towards the starting end and the terminating ends thereof along the light propagating direction in an interacting portion at which the electric field applied by the signal electrode interacts with light propagating through the first waveguide and the second waveguide.
    Type: Application
    Filed: August 25, 2010
    Publication date: April 7, 2011
    Applicant: Fujitsu Optical Components Limited
    Inventor: Masaki SUGIYAMA
  • LUBRICATION SYSTEM FOR FOUR-STROKE ENGINE
    Publication number: 20110067669
    Abstract: A lubrication system for a four cycle engine lubricates the valve mechanism with the oil mist of the concentration lowered by the liquefying means. The lubrication system has an oil feeding passage for connecting an oil reservoir and the crank chamber and sending the oil retained in liquid form in the oil reservoir to the crank chamber under a negative pressure of the crank chamber, a communication passage for connecting the crank chamber and the oil reservoir and sending oil mist generated in the crank chamber to the oil reservoir when under a positive pressure of the crank chamber, liquefying means in the oil reservoir for liquefying the oil mist sent from the communication passage to the oil reservoir to decrease the concentration of the oil mist, and a supply passage for supplying the oil mist from the oil reservoir to the valve operating chamber through the liquefying means.
    Type: Application
    Filed: September 7, 2010
    Publication date: March 24, 2011
    Applicant: MAKITA CORPORATION
    Inventors: Masaki SUGIYAMA, Toshihiro Tomita, Masaki Kurimoto, Hiroshi Kubota
  • LUBRICATION SYSTEM FOR PORTABLE FOUR-STROKE ENGINE
    Publication number: 20110067659
    Abstract: A lubrication system for a portable four-stroke engine includes an opening end of the breather passage is disposed at substantially a center of a valve-operating chamber, and the valve-operating chamber is formed by attaching a valve-operating chamber cover. An inner cover is attached to an inner surface of the valve-operating chamber cover so as to be provided along and in contact with the inner surface of the valve-operating chamber cover. A suction passage is formed as a gap between the circumferential edge of the top plate portion and the inner cover. Three or more suction tubes that are in communication with the suction passage are provided in the inner cover, each of the suction tubes having an opening end. At least one of the opening ends of the suction tubes is provided lower than the opening end of the breather passage in an attitude of the engine during use.
    Type: Application
    Filed: September 7, 2010
    Publication date: March 24, 2011
    Applicant: MAKITA CORPORATION
    Inventors: Masaki SUGIYAMA, Toshihiro Tomita, Masaki Kurimoto, Hiroshi Kubota
  • MAGNETIC CORE FOR A COIL DEVICE AND METHOD FOR MANUFACTURING A MAGNETIC CORE
    Publication number: 20110025444
    Abstract: A reactor core, which has a pair of press surfaces (a-b planar surfaces) formed by compression molding with an edge part of each of the press surfaces being plastically formed by pressure treatment, is disposed in a direction in which a magnetic flux generated upon energization of a coil does not penetrate each of the press surfaces.
    Type: Application
    Filed: March 16, 2009
    Publication date: February 3, 2011
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki Sugiyama, Toshiya Yamaguchi, Tomonori Inuzuka