Patents by Inventor Hideki Sekiguchi
Hideki Sekiguchi 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).
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Publication number: 20070247496Abstract: Disclosed is a recording liquid for printing and recording the information on a support for printing, such as a recording paper sheet. This recording liquid contains dye, a solvent for dissolving or dispersing the dye, and a water-soluble organic solvent having a Cobb30 value as measured by an ultrasonic transmitting dynamic liquid penetration measurement device as prescribed in JIS P8140:1998 of 22±2 g/m2, and having the time of peak occurrence in a penetration characteristic curve for a plain paper sheet of not less than 0.1 sec and not longer than 0.5 sec. As water-soluble organic solvent, one or more of 2-ethyl-2-propyl-1,3-propanediol, 2-methyl-2-butyl-1,3-propanediol, 2-methyl-2-propyl-1,3-propanediol, 2,2-diethyl-1,3-propanediol, 2-methyl-2-ethyl-1,3-propanediol and 2-propyl-1,4-butanediol, is used.Type: ApplicationFiled: December 14, 2005Publication date: October 25, 2007Applicant: SONY CORPORATIONInventor: Hideki Sekiguchi
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Publication number: 20070165086Abstract: Disclosed is a recording liquid essentially composed of water, a coloring material, an organic solvent and a surfactant. The surfactant is composed of a specified ethylene oxide/propylene oxide/ethylene oxide block copolymer, a specified ethylene oxide/butylene oxide/ethylene oxide block copolymer or a specified propylene oxide/ethylene oxide/propylene oxide block copolymer. The recording liquid is superior in ejection stability and high in optical density even on multi-color recording letters/characters or images on an ordinary paper sheet so that it allows for high quality recording free of boundary bleeding or all-over color unevennesses otherwise caused by color mixing.Type: ApplicationFiled: May 25, 2004Publication date: July 19, 2007Inventors: Hideki Sekiguchi, Hiroyuki Nakashinden, Masnaobu Hida
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Patent number: 7244210Abstract: The invention provides a power transmission apparatus for vehicle which can realize a high torque transmission efficiency and a high reduction gear ratio of a reduction gear unit with a more compact structure, and a vehicle-driving electric machinery system using the power transmission apparatus for vehicle. The power transmission apparatus for vehicle comprises a motor, a reduction gear unit for decelerating power outputted from the motor, and a differential gear unit for distributing the power decelerated by the reduction gear unit to left and right wheels. The reduction gear unit is a reduction gear mechanism including a plurality of gears mounted over a shaft which is rotatably held by a housing in a fixed position. The reduction gear unit and the differential gear unit are arranged within an area in oppositely facing relation to an axial end surface of the motor.Type: GrantFiled: October 22, 2004Date of Patent: July 17, 2007Assignee: Hitachi, Ltd.Inventors: Kyugo Hamai, Hideki Sekiguchi, Shogo Miyamoto, Yoshikazu Tanaka
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Publication number: 20070139500Abstract: A recording liquid to be attached in a droplet state to an object for the purpose of recording on the object is disclosed, which contains a coloring matter, a solvent for dissolving or dispersing the coloring matter therein, and at least one cyclic aliphatic compound represented by the following chemical formula (1): wherein Ra and Rb each represents an alkyl group of from 1 to 3 carbon atoms and are satisfied with the relation of [2?(Ra+Rb)?4].Type: ApplicationFiled: December 14, 2006Publication date: June 21, 2007Inventor: Hideki Sekiguchi
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Publication number: 20070139501Abstract: A recording liquid to be attached in a droplet state to an object for the purpose of recording on the object is disclosed, which contains at least one alkylene glycol selected from 1,2-pentanediol, 1,2-hexanediol and 1,3-hexanediol, thereby adjusting a zero second dynamic surface tension thereof at 35 mN/m or more and not more than 40 mN/m and contains a surfactant, thereby adjusting a static surface tension thereof which is satisfied with the following numerical expression (1): (?dst0?3)??sst?(?dst0?1) ??(1) wherein ?dst0 [mN/m] represents a zero second dynamic surface tension; and ?sst [mN/m] represents a static surface tension.Type: ApplicationFiled: December 15, 2006Publication date: June 21, 2007Inventor: Hideki Sekiguchi
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Publication number: 20070038340Abstract: A running controller and an electric running control system for an electric vehicle, in which when a tire slip occurs during running of the vehicle, such as under driving, braking and turning, a motor output is controlled to always maximize the coefficient ? of road friction, thereby obtaining a maximum tire driving force and a maximum tire braking force. In the electric vehicle, wheels are driven and braked through control of electric driving apparatuss each including a motor. When slipping of any of the wheels is detected, ESC-CU executes powering and regenerative control of the motor to change, depending on road conditions, a target value to which a slip rate is to be converged. The ESC-CU calculates the coefficient ? of road friction based on a motor current and executes the powering and regenerative control of the motor such that the calculated coefficient ? of road friction is maintained in the vicinity of a maximum value thereof.Type: ApplicationFiled: August 9, 2006Publication date: February 15, 2007Applicant: Hitachi, Ltd.Inventors: Hideki Sekiguchi, Kyugo Hamai
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Publication number: 20060273272Abstract: A valve device is provided, by which a reverse flow can be avoided without being restricted by pipe arrangement and without bending a primary piping, thereby preventing a defective operation due to a dynamic pressure from occurring. An inlet side inner passage includes a bent part (formed with an inlet side lateral inner passage 21 and the inlet side longitudinal inner passage 22) in a valve housing 11, that is, the inner passage formed in the valve housing 11 takes charge of such a bent part required in a primary piping to avoid a reverse flow.Type: ApplicationFiled: July 26, 2004Publication date: December 7, 2006Inventors: Hiroshi Uchida, Hideki Sekiguchi, Michiaki Ohno
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Patent number: 7040216Abstract: A hydraulic motor is equipped with an output shaft (2), a cylinder (4) arranged around the output shaft and receiving a plurality of pistons (6) expanding with the fluid pressure, a diagonal plate (7) that contacts the plurality of the expanding pistons (6), thereby to exert rotational force to the cylinder (4), a brake disc (21) disposed outside the cylinder (4) to rotate together therewith, a motor casing (11, 12) receiving the cylinder (4) and the brake disc (21), a brake driving device (25) that presses an outer periphery of the brake disc (21) on an inner peripheral surface of the motor casing (11, 12) to brake the brake disc. A first chamber (14) and a second chamber (15) are defined in the motor casing (11, 12) by the brake disc (21) and a communicating passage (30) formed bypassing the brake disc (21) communicates the first chamber 814) with the second chamber (15).Type: GrantFiled: July 2, 2003Date of Patent: May 9, 2006Assignee: Kayaba Industry Co., Ltd.Inventors: Hideki Sekiguchi, Manabu Yoshida
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Publication number: 20060055753Abstract: According to the present invention, an ink (2) containing an EO adduct of a dihydric alcohol, having a hydrocarbon group with 9 or less carbon atoms and having an I/O ratio ranging between 1 and 1.37, is supplied via nozzles (42a) in the form of liquid droplets i onto a recording paper sheet P, so that fine bubbles may be suppressed from being generated in the ink (2) to prevent emission defects such as non-emission or warped emission, and hence a high quality image free of blurring or white spots may be produced.Type: ApplicationFiled: October 20, 2004Publication date: March 16, 2006Inventors: Hideki Sekiguchi, Yasuhiro Tanaka, Noriaki Furukawa
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Publication number: 20050252204Abstract: A hydraulic motor is equipped with an output shaft (2), a cylinder (4) arranged around the output shaft and receiving a plurality of pistons (6) expanding with the fluid pressure, a diagonal plate (7) that contacts the plurality of the expanding pistons (6), thereby to exert rotational force to the cylinder (4), a brake disc (21) disposed outside the cylinder (4) to rotate together therewith, a motor casing (11, 12) receiving the cylinder (4) and the brake disc (21), a brake driving device (25) that presses an outer periphery of the brake disc (21) on an inner peripheral surface of the motor casing (11, 12) to brake the brake disc. A first chamber (14) and a second chamber (15) are defined in the motor casing (11, 12) by the brake disc (21) and a communicating passage (30) formed bypassing the brake disc (21) communicates the first chamber 814) with the second chamber (15).Type: ApplicationFiled: July 2, 2003Publication date: November 17, 2005Inventors: Hideki Sekiguchi, Manabu Yoshida
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Publication number: 20050211490Abstract: The vehicle drive device comprises a motor for driving wheels, an inverter for driving the motor, a rotational position sensor for detecting rotation of the motor, a gear mechanism for transmitting an output of the motor to wheels, an oil pump for circulating oil, and cases housing the motor, inverter, rotational position sensor, gear mechanism, and oil pump. The motor, inverter, rotational position sensor gear mechanism oil pump and cases are formed as an integral structure.Type: ApplicationFiled: March 2, 2005Publication date: September 29, 2005Applicant: Hitachi, Ltd.Inventors: Hisaya Shimizu, Hideki Sekiguchi, Shogo Miyamoto, Tatsuyuki Yamamoto, Kyugo Hamai
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Publication number: 20050143210Abstract: The invention provides a power transmission apparatus for vehicle which can realize a high torque transmission efficiency and a high reduction gear ratio of a reduction gear unit with a more compact structure, and a vehicle-driving electric machinery system using the power transmission apparatus for vehicle. The power transmission apparatus for vehicle comprises a motor, a reduction gear unit for decelerating power outputted from the motor, and a differential gear unit for distributing the power decelerated by the reduction gear unit to left and right wheels. The reduction gear unit is a reduction gear mechanism including a plurality of gears mounted over a shaft which is rotatably held by a housing in a fixed position. The reduction gear unit and the differential gear unit are arranged within an area in oppositely facing relation to an axial end surface of the motor.Type: ApplicationFiled: October 22, 2004Publication date: June 30, 2005Applicant: HITACHI, LTD.Inventors: Kyugo Hamai, Hideki Sekiguchi, Shogo Miyamoto, Yoshikazu Tanaka
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Patent number: 6900473Abstract: A semiconductor light emitting device is disclosed in which a semiconductor multilayer structure including a light emitting layer is formed on a substrate and light is output from the opposite surface of the semiconductor multilayer structure from the substrate. The light output surface is formed with a large number of protrusions in the form of cones or pyramids. To increase the light output efficiency, the angle between the side of each protrusion and the light output surface is set to between 30 and 70 degrees.Type: GrantFiled: June 25, 2002Date of Patent: May 31, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Shunji Yoshitake, Hideki Sekiguchi, Atsuko Yamashita, Kazuhiro Takimoto, Koichi Takahashi
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Patent number: 6670002Abstract: An ink jet recording sheet which comprises a support and an ink-receiving layer formed on at least one side of the support, said ink-receiving layer comprising a pigment, colloidal particles or a mixture thereof, and a binder resin, as the main components, wherein the ink-receiving layer contains at least one organic titanium compound of the following formula 1 or 2: wherein R is hydrogen or CmH2m+1, provided that m is 3 or 4, R′ is hydrogen, NH4+ or CnH2n+1, provided that n is an integer of from 1 to 3, and x is an integer of from 1 to 3, wherein R″ is CpH2p, provided that p is an integer of from 5 to 8, R′″ is CqH2q+1, provided that q is 3 or 4, and y is an integer of from 1 to 3.Type: GrantFiled: May 25, 1999Date of Patent: December 30, 2003Assignee: Mitsubishi Paper Mills LimitedInventors: Hideki Sekiguchi, Tetsuya Uto, Jun Urasaki
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Patent number: 6561480Abstract: The present invention provides a motor-operated valve having no additional stopper for stopping the rotation of a rotor at fully open and closed states of the valve to allow a reduced number of parts of the valve and to prevent a noise otherwise generated by the abutment of the rotor against a stopper. The motor-operated valve includes a rotor 17 having a shaft 18 formed with an external thread 20. The motor-operated valve also includes a needle valve element 6 having a needle valve head 5 at one end portion thereof and an internal thread 16 engaging with the external thread 20 at another end portion. The valve element has a joining portion 14 for joining the valve head to the internal thread 20. The motor-operated valve also includes a main valve body 1 having a guide portion which stops the rotation of the valve element but allows the axial movement of the valve element.Type: GrantFiled: November 22, 2000Date of Patent: May 13, 2003Assignee: Kabushiki Kaisha Saginomiya SeisakushoInventors: Yasuo Komiya, Seiichi Nakano, Hideki Sekiguchi, Tokuji Yatsui
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Patent number: 6539712Abstract: A hydraulic drive unit is disclosed which can prevent the occurrence of cavitation at the time of turning OFF of a hydraulic motor without greatly modifying the circuit configuration and the entire system and which, as a result, can improve the deceleration feeling of the hydraulic motor and prevent the occurrence of a low noise.Type: GrantFiled: December 26, 2000Date of Patent: April 1, 2003Assignee: Kayaba Kogyo Kabushiki KaishaInventors: Sigetaka Konishi, Kenji Suzuki, Hideki Sekiguchi, Takao Muto
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Publication number: 20020195609Abstract: A semiconductor light emitting device is disclosed in which a semiconductor multilayer structure including a light emitting layer is formed on a substrate and light is output from the opposite surface of the semiconductor multilayer structure from the substrate. The light output surface is formed with a large number of protrusions in the form of cones or pyramids. To increase the light output efficiency, the angle between the side of each protrusion and the light output surface is set to between 30 and 70 degrees.Type: ApplicationFiled: June 25, 2002Publication date: December 26, 2002Inventors: Shunji Yoshitake, Hideki Sekiguchi, Atsuko Yamashita, Kazuhiro Takimoto, Koichi Takahashi
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Patent number: 6485812Abstract: An ink jet recording sheet which comprises a support and at least one ink-receiving layer comprising fine inorganic particles and a binder resin, formed on at least one side of the support, wherein at least one ink-receiving layer contains at least one tetraalkoxytitanium of the following formula 1: wherein R is an alkyl group, an aryl group or an aralkyl group, and m is a natural number.Type: GrantFiled: October 21, 1999Date of Patent: November 26, 2002Assignee: Mitsubishi Paper Mills LimitedInventor: Hideki Sekiguchi
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Publication number: 20020092417Abstract: A hydraulic drive unit is disclosed which can prevent the occurrence of cavitation at the time of turning OFF of a hydraulic motor without greatly modifying the circuit configuration and the entire system and which, as a result, can improve the deceleration feeling of the hydraulic motor and prevent the occurrence of a low noise.Type: ApplicationFiled: December 26, 2000Publication date: July 18, 2002Inventors: Kenji Suzuki, Takao Muto, Sigetaka Konishi, Hideki Sekiguchi
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Patent number: 6312794Abstract: An ink jet recording sheet having an ink receiving layer containing synthetic amorphous silica formed on at least one side of a support, wherein the pore volume (V1:ml/g) of pores with pore sizes of from 110 to 200 Å and the pore volume (V2:ml/g) of pores with pore sizes of from 10 to 300 Å in the synthetic amorphous silica satisfy the following mathematical formulae 1 and 2. V1≦0.5 (ml/g) 1 V2≧0.Type: GrantFiled: March 25, 1999Date of Patent: November 6, 2001Assignee: Mitsubishi Paper Mills LimitedInventors: Hideki Sekiguchi, Takao Senga