Patents by Inventor Masahiro Sasaki

Masahiro Sasaki 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: 7778765
    Abstract: A fuel injection control apparatus includes a computing unit that calculates a pulse width for a pulse signal which drives the valve of a fuel injector, based on the operational state of the internal combustion engine and fuel pressure detected by a fuel pressure sensor. After a valve-opening command has turned on and a high valve-opening current has been supplied to open the fuel injector valve, a fuel injector driving signal waveform command unit discharges the current and supplies a small hold current Ih2 to maintain the injector's valve-open state. After the elapse of a predetermined rapid-discharge starting time from the turn-on of the valve-opening command, the fuel injector driving signal waveform command unit rapidly discharges the current until the hold current Ih2 has been reached.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: August 17, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Toyohara, Takao Miyake, Masahiro Sasaki, Takuya Mayuzumi
  • Publication number: 20100191479
    Abstract: The present invention relates to a potentiometric titration method comprising assuming a titration curve and a differential curve from measured values; computing a straight line (D) connecting the two measured values on the titration curve which are present adjacent to a tentative terminal point (P); computing a first estimation line (B1) and a second estimation line (B2) by a least squares method based on a set of the measured values (d1), (d2) and (d3) and a set of the measured values (d4), (d5) and (d6), respectively, on the titration curve, which are respectively spaced by a predetermined level apart from the tentative terminal point (P) by using the number of decision points (n) as an index wherein the number of decision points (n) represents the number of measured values on the previously set titration curve; computing an intermediate line (C) between the first estimation line (B1) and the second estimation line (B2); and computing an intersection point (A) of the intermediate line (C) and the straight
    Type: Application
    Filed: February 12, 2010
    Publication date: July 29, 2010
    Applicant: MITSUBISHI CHEMICAL ANALYTECH CO., LTD.
    Inventors: Masahiro SASAKI, Toshiyuki Kamo, Yoko Ohashi
  • Publication number: 20100130631
    Abstract: Polyester polyol compositions have a low viscosity and are suited for the production of rigid polyurethane foams. Compositions for rigid polyurethane foams contain the polyester polyol compositions. Rigid polyurethane foams are produced therefrom. A polyester polyol composition is obtained by: a step (I) in which a dibasic acid compound (A) is reacted with a trihydric or higher polyhydric alcohol (a compound (B)); and a step (II) in which the reaction mixture from the step (I) is reacted with a hydroxycarboxylic acid compound (C); at least one compound (C) being a compound (C?) selected from the group consisting of ricinoleic acid compounds and 12-hydroxystearic acid compounds; the polyester polyol composition having a hydroxyl value in the range of 250 to 550 mg KOH/g and an average functionality of 3 to 8.
    Type: Application
    Filed: April 21, 2008
    Publication date: May 27, 2010
    Inventors: Atsushi MIYATA, Tomoki TSUTSUI, Nobuhito KOGA, Masahiro SASAKI, Shinsuke MATSUMOTO, Kazuhiko OHKUBO
  • Publication number: 20100101622
    Abstract: A thermoelectric conversion module includes a laminated body including a plurality of thermoelectric components laminated therein. Each of the thermoelectric components includes an insulating layer, and a thermoelectric conversion element section in which a plurality of p-type thermoelectric conversion material layers and a plurality of n-type thermoelectric conversion material layers are arranged on the insulating layer in a series connection. A step eliminating insulating material layer is arranged to eliminate a step between the thermoelectric conversion element section and a vicinity thereof, in a region between the insulating layers adjacent to each other in a laminating direction, around the p-type thermoelectric conversion material layers and n-type thermoelectric conversion material layers constituting the thermoelectric conversion element section. The thermoelectric conversion element section has a serpentine shape.
    Type: Application
    Filed: January 15, 2010
    Publication date: April 29, 2010
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Masahiro SASAKI, Takanori NAKAMURA
  • Publication number: 20100051325
    Abstract: A flex-rigid printed wiring board is provided which can retain flexibility of a flexible portion while increasing durability of the flexible portion against folding, and can ensure conduction in a rigid portion, and a method of manufacturing the printed wiring board. The flex-rigid printed wiring board includes a conductor layer provided on at least one face of a base film, one region of the wiring board containing the base film being a rigid region, an another region containing the base film being a flexible region. The average thickness “tf” of the conductor layer on the base film formed in the flexible region and the average thickness “tR” of the conductor layer on the base film formed in the rigid region satisfy the relationship of tf<tR.
    Type: Application
    Filed: September 21, 2006
    Publication date: March 4, 2010
    Applicants: DAISHO DENSHI CO., LTD., TOHOKU UNIVERSITY
    Inventors: Akihiro Sato, Masahiro Sasaki, Tadahiro Ohmi, Akihiro Morimoto
  • Patent number: 7618562
    Abstract: A p-type oxide thermoelectric material which has a high output factor and a low environmental load. The thermoelectric material is composed of an oxide represented by the compositional formula (Ni1-xCux) (Mn2-yCuy)O4 and having a structure in which Ni elements occupying the Ni sites and/or Mn elements occupying the Mn sites are partially replaced by Cu elements, wherein 0?x?0.7, 0?y?0.7, and 0.4?x+y. In such a thermoelectric material, preferably, 0.2?x?0.5 and 0.2?y?0.5, and preferably, the output factor at 50° C. to 800° C. is 10×10?6 W/mK2 or more.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: November 17, 2009
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masahiro Sasaki, Takanori Nakamura
  • Publication number: 20090269825
    Abstract: The object is to provide a method for stabilization of a biological molecule and a composition, specifically a method for stabilization of an enzyme or a labeled antibody for use in a clinical diagnosis and a composition. Thus, disclosed is a method for stabilization of a biological molecule which is characterized by allowing (a) the biological molecule and (b) sericin and/or a hydrolysate or equivalence thereof to coexist with each other. Also disclosed is a composition having a biological molecule stabilized therein, which is characterized in that the components (a) and (b) coexist with each other in the composition. Further disclosed is a composition for stabilizing a biological molecule, which comprises sericin and/or a hydrolysate or equivalence thereof.
    Type: Application
    Filed: November 9, 2006
    Publication date: October 29, 2009
    Applicants: TOYO BOSEKI KABUSHIKI KAISHA, SEIREN CO., LTD.
    Inventors: Takahide Kishimoto, Kayoko Kajitani, Kazuo Kajitani, Hideyuki Yamada, Masahiro Sasaki
  • Publication number: 20090243574
    Abstract: An internal combustion engine controller comprises a booster coil connected to a battery and a booster capacitor. A switch element is connected to the booster coil to control the passage of current through the booster coil and an interruption of the current. The booster capacitor accumulates electrical energy generated with an inductance of the booster coil at the time of the interruption of the passage of the current. A booster control circuit carries out control in a constant boost switching cycle so as to pass the current through the booster coil and the switch element until the current reaches a preset switching stop threshold value and then interrupt the current to charge the energy generated with the inductance of the booster coil into the booster capacitor. The booster control circuit is configured to ensure a minimum time period for the booster capacitor-charging of the energy within the boost switching cycle.
    Type: Application
    Filed: February 17, 2009
    Publication date: October 1, 2009
    Applicant: Hitachi, Ltd.
    Inventors: Takuya MAYUZUMI, Mitsuhiko Watanabe, Ryoichi Oura, Masahiro Sasaki
  • Publication number: 20090197331
    Abstract: A composition for the cryopreservation of cells according to the present invention at least comprises sericin and one or more components selected from the group consisting of amino acids and saccharides. Further, a method for the cryopreservation of cells according to the present invention comprises the steps of placing target cells in the abovementioned composition for the cryopreservation of cells and cryopreserving them. According to the composition for the cryopreservation of cells of the present invention, cells can be cryopreserved over a long period of time without the use of serum and components derived from serum.
    Type: Application
    Filed: September 26, 2005
    Publication date: August 6, 2009
    Inventors: Yoichi Kato, Masahiro Sasaki, Hideyuki Yamada
  • Patent number: 7561435
    Abstract: There is proposed an engine controller which is excellent in reliability in that the outer peripheral edge face (cut surface) of covering member can be prevented from being rusted while securing the water-proofness and dust-proofness. This engine controller comprises a circuit board (12) for controlling an engine; an aluminum die-cast main case body (20) having an open top; and a covering member (30) made of an iron-based metal plate which is preliminarily applied with surface treatment, the covering member (30) being fixedly clamped to the main case body (20) by means of a setscrew (40) so as to hermetically close the open top of the main case body (20); wherein the main case body (20) is provided thereon with a pedestal (24) or groove (25) on which a liquid or jellied water-proofing adhesive (50) is coated or filled (piled), thereby enabling entire outer peripheral edge face (33a) of the covering member (30) to be covered by the water-proofing adhesive (50).
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: July 14, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Masaru Kamoshida, Masahiro Sasaki, Takeshi Igarashi, Masahiko Asano
  • Publication number: 20090177367
    Abstract: Disclosed herein is a fuel injection control apparatus for an internal combustion engine, capable of opening and closing accurately a valve of the fuel injector even when the quantity of injection required is small and a pulse duration of a driving pulse signal to the fuel injector is short. A fuel injector pulse width computing unit 9a calculates, from the operational state of the internal combustion engine and the fuel pressure detected by a fuel pressure sensor, pulse width of a pulse signal which drives the valve of the fuel injector. After an valve-opening command has turned on and a high valve-opening current for opening the fuel injector valve has been supplied from a high-voltage source to the fuel injector, a fuel injector driving signal waveform command unit 9b discharges the current and supplies from a low-voltage source a small hold current Ih2 that allows the fuel injector to maintain the valve-open state.
    Type: Application
    Filed: December 19, 2008
    Publication date: July 9, 2009
    Applicant: HITACHI, LTD.
    Inventors: Masahiro TOYOHARA, Takao Miyaki, Masahiro Sasaki, Takuya Mayuzumi
  • Publication number: 20090143495
    Abstract: The polyurethane foam composition of the present invention comprises a polyol, a catalyst, a surfactant, a foaming agent and a polyisocyanate, wherein the polyol contains, at least, (A) a polyol that is produced by using a raw material obtained from plant-derived oil, contains more than three side chains per molecule, each side chain comprising a hydrocarbon chain having 4 or more carbon atoms, and has an average number of functional groups of 1.5 to 4.5 and a hydroxyl value of 80 to 140 mgKOH/g. The polyurethane foam of the present invention is produced by foaming the above polyurethane foam composition. The polyurethane foam contributes to reducing environmental burdens, and has excellent low rebound property, particularly a characteristic that the increase in hardness at low temperatures is suppressed.
    Type: Application
    Filed: August 11, 2006
    Publication date: June 4, 2009
    Inventors: Katsuhisa Nozawa, Masahiro Sasaki, Kazuhiko Ohkubo
  • Publication number: 20090134365
    Abstract: A p-type oxide thermoelectric material which has a high output factor and a low environmental load. The thermoelectric material is composed of an oxide represented by the compositional formula (Ni1-xCux) (Mn2-yCuy)O4 and having a structure in which Ni elements occupying the Ni sites and/or Mn elements occupying the Mn sites are partially replaced by Cu elements, wherein 0?x?0.7, 0?y?0.7, and 0.4?x+y. In such a thermoelectric material, preferably, 0.2?x?0.5 and 0.2?y?0.5, and preferably, the output factor at 50° C. to 800° C. is 10×10?6 W/mK2 or more.
    Type: Application
    Filed: December 10, 2008
    Publication date: May 28, 2009
    Inventors: MASAHIRO SASAKI, Takanori Nakamura
  • Publication number: 20090127915
    Abstract: The polyurethane foam composition of the present invention comprises at least water, a catalyst, a surfactant, a polyisocyanate, and a polyol and/or a polymer-dispersed polyol in which polymer fine particles obtained by polymerizing a compound having an unsaturated bond are dispersed in a polyol, wherein the polyol comprises at least (A) a plant-derived polyol produced by using a raw material obtained from plants and (B) a low-monol polyol having an overall degree of unsaturation of 0.050 meq/g or less. The polyurethane foam relating to the present invention is obtained by foaming this polyurethane foam composition. The polyurethane foam contributes to reducing environmental burdens and attains hardness and ball rebound suitable for a cushioning material and excellent durability in a balanced manner.
    Type: Application
    Filed: August 11, 2006
    Publication date: May 21, 2009
    Applicant: Mitsui Chemicals Polyurethanes, Inc.
    Inventors: Katsuhisa Nozawa, Masahiro Sasaki, Kazuhiko Ohkubo
  • Publication number: 20090119913
    Abstract: An electronic circuit device comprises: a printed circuit board mounted with electronic components; a resin-molded portion formed of resin so disposed that the electronic components are covered therewith; a convex connector that has metal terminals for connection and is exposed from the resin-molded portion; and a sealing member wrapped around the resin-molded portion.
    Type: Application
    Filed: January 9, 2009
    Publication date: May 14, 2009
    Applicant: HITACHI, LTD.
    Inventors: Takuya Mayuzumi, Masahiro Sasaki, Kiyoomi Kadoya
  • Publication number: 20090107469
    Abstract: There is proposed a control unit for an internal combustion engine, which comprises a boost circuit, a switching element, a current detecting resistor and a controller and is designed to be actuated such that the boost circuit is used to boost a power source voltage to create a boosted voltage and the controller is used to control the switching element so as to enable the boosted voltage to flow to the injector solenoid coil. This control unit is designed such that, when the boost circuit goes out of order, the injector solenoid coil is excited by making use of the power source voltage without using the boosted voltage and without creating a peak current to thereby generate a first holding current required for opening the injector and a second holding current required for retaining the opened state of the injector, the second holding current being lower in intensity than the first holding current.
    Type: Application
    Filed: October 23, 2008
    Publication date: April 30, 2009
    Applicant: Hitachi, Ltd
    Inventors: Nobuyuki TAKAHASHI, Masahiro SASAKI, Takuya MAYUZUMI, Mitsuhiko WATANABE, Ryoichi OURA
  • Patent number: 7514784
    Abstract: An electronic circuit device comprises: a printed circuit board mounted with electronic components; a resin-molded portion formed of resin so disposed that the electronic components are covered therewith; a convex connector that has metal terminals for connection and is exposed from the resin-molded portion; and a sealing member wrapped around the resin-molded portion.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: April 7, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Takuya Mayuzumi, Masahiro Sasaki, Kiyoomi Kadoya
  • Publication number: 20090079435
    Abstract: According to the present invention, the operation of a diagnostic circuit within a load drive circuit, which has been built into an electronic control device, is checked without modifying the electronic control device or the like. The load drive circuit, which drives a load such as a solenoid using a DC power supply as a power supply, includes a drive circuit and a diagnostic circuit which is independently provided within the drive circuit. Upon input of a drive-stop signal from a control circuit that controls the drive circuit, the operation of at least the drive circuit stops, so that whether the diagnostic circuit, which diagnoses the condition of the load, is normally operating or not is checked in a condition in which the load drive circuit has been built into the electronic control device.
    Type: Application
    Filed: August 14, 2008
    Publication date: March 26, 2009
    Applicant: Hitachi, Ltd.
    Inventors: Hisayoshi NAKATA, Masahiro Sasaki, Takuya Mayuzumi, Mitsuhiko Watanabe, Ryoichi Oura
  • Publication number: 20080229731
    Abstract: The present invention provides a catalyst for combustion treatment of suspended particulate matter in diesel exhaust gases, and a combustion catalyst for treating diesel exhaust gases in which a precious metal or an oxide thereof as the catalytic component is loaded on a carrier composed of oxide ceramic particles comprising ceria-zirconia or ceria-praseodymium oxide. In the present invention, depending on the carried precious metal, the carrier is preferably composed of oxide ceramic particles further comprising yttria or lanthanum oxide. The present invention provides a sufficient activity to combust suspended particulate matter in exhaust gases, and can cause combustion at a low temperature of about 300° C. It operates stably for a long period, and can burn suspended particulate matter, especially carbon microparticles.
    Type: Application
    Filed: December 15, 2005
    Publication date: September 25, 2008
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Shunji Kikuhara, Takeshi Yamashita, Hitoshi Kubo, Kazuto Itaya, Masahiro Sasaki
  • Patent number: RE41329
    Abstract: To provide an apparatus that may impart a complicated bend deformation to an object to be machined such as a ceramic bar elongated in one direction or the like, and may reduce the non-uniformity in machining amount of the object to be machined upon the machining work of the object to be machined, specifically a correcting mechanism for deforming the object to be machined together with a jig holding the object to be machined is provided in a machining apparatus. The correcting mechanism includes a base, a plurality of levers provided at first ends with pins, a shaft fixed to the base for rotatably supporting the levers, and a plurality of correcting drive means coupled to second ends of said levers for pivoting the levers to the shaft to thereby pivoting the pins.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: May 11, 2010
    Assignee: TDK Corporation
    Inventors: Hiroshi Shindou, Masahiro Sasaki, Akio Ogawa, Tetsuo Abe, Masaki Kouzu, Masao Yamaguchi