Patents by Inventor Norikazu Takahashi
Norikazu Takahashi 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: 20240067210Abstract: A driving control system 1 includes a camera unit 11 and a transceiver 18 which are mounted to a vehicle 5. The driving control system 1 also includes a transceiver 74, an information recognition_ECU 72 which recognizes road traffic information based on first road traffic detection information received by the transceiver 74 through the transceiver 18, and a traveling_ECU 73 which computes control information for the vehicle 5 based on the road traffic information, which are provided to a traffic control apparatus 70 disposed in each predetermined traffic control area. The driving control system 1 also includes an E/G_ECU 23, a PS_ECU 24, and a BK_ECU 25 which are mounted to the vehicle 5 and execute driving control based on the control information received by the transceiver 18 through the transceiver 74.Type: ApplicationFiled: December 23, 2021Publication date: February 29, 2024Applicant: SUBARU CORPORATIONInventors: Hajime OYAMA, Kengo KOBAYASHI, Norikazu EBISAWA, Yasuhiro TAKAHASHI, Hiroaki KAWAMURA, Masaru NAKANISHI
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Publication number: 20210102511Abstract: It is an object of the present invention to provide a novel internal-combustion engine piston which makes it possible to achieve both an improvement in thermal efficiency and a reduction in exhaust harmful components, and to suppress the occurrence of abnormal combustion such as knocking and pre-ignition. A cooling passage is formed in a piston, and on a top face of the piston are provided a first heat shielding layer composed of a material having a lower thermal conductivity and volumetric specific heat than those of a piston base material, and a second heat shielding layer composed of a material having a lower thermal conductivity and volumetric specific heat than those of the first heat shielding layer, wherein a first distance between the first heat shielding layer and the cooling passage is set to be less than a second distance between the second heat shielding layer and the cooling passage.Type: ApplicationFiled: April 12, 2018Publication date: April 8, 2021Inventors: Yoshihiro SUKEGAWA, Norikazu TAKAHASHI
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Publication number: 20190390591Abstract: Provided is a piston for an internal combustion engine, the piston enabling both an improvement in heat efficiency and a reduction in emissions, and enabling the prevention of overheating of the piston to prevent the occurrence of knocking, pre-ignition, and a drop in air filling efficiency. This piston (100a) for an internal combustion engine constitutes a portion of a combustion chamber (9) of an internal combustion engine (200) and includes a substrate (103), a first film (101) provided on a section of the top surface of the substrate (103) contacting the combustion chamber (9), and a second film (102) provided on another section of the top surface. The piston for the internal combustion engine is characterized in that: the first film (101) has a lower heat conductivity and heat capacity than the substrate (103), and the second film (102) has a lower heat conductivity than the substrate (103) and a higher heat capacity than the first film (101).Type: ApplicationFiled: February 2, 2018Publication date: December 26, 2019Applicant: Hitachi Automotive Systems, Ltd.Inventors: Yoshihiro SUKEGAWA, Norikazu TAKAHASHI, Ittou SUGIMOTO
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Patent number: 10393581Abstract: A spectroscope includes a light receiving element and a wavelength selection filter unit. The light receiving element includes a pixel region where a plurality of pixels are disposed. The wavelength selection filter unit is disposed on the pixel region and includes a plurality of wavelength selection filters. The plurality of wavelength selection filters have transmission wavelength characteristics which are different from each other, and split incident light for each wavelength or each wavelength band. The light receiving element generates a light receiving signal by photoelectrically converting light which is split by the wavelength selection filter and is incident on the pixel region, for each pixel.Type: GrantFiled: December 12, 2018Date of Patent: August 27, 2019Assignee: JVC KENWOOD CORPORATIONInventors: Yuichi Hagihara, Taiki Kobayashi, Norikazu Takahashi
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Publication number: 20190234796Abstract: A spectroscope includes a light receiving element and a wavelength selection filter unit. The light receiving element includes a pixel region where a plurality of pixels are disposed. The wavelength selection filter unit is disposed on the pixel region and includes a plurality of wavelength selection filters. The plurality of wavelength selection filters have transmission wavelength characteristics which are different from each other, and split incident light for each wavelength or each wavelength band. The light receiving element generates a light receiving signal by photoelectrically converting light which is split by the wavelength selection filter and is incident on the pixel region, for each pixel.Type: ApplicationFiled: December 12, 2018Publication date: August 1, 2019Inventors: Yuichi HAGIHARA, Taiki KOBAYASHI, Norikazu TAKAHASHI
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Publication number: 20180369954Abstract: A piston for an internal combustion engine has a surface treatment portion on a piston base material at a piston crown surface, the surface treatment portion including, along the direction of depth from the surface side, a first layer that is comprised of a layer of a first metal or a layer containing the first metal, a second layer that contains both a second metal containing oxygen or an oxide of the second metal and a low-thermal-conductivity material, and a third layer that is comprised of a mixture of a third metal and the low-thermal-conductivity material.Type: ApplicationFiled: November 29, 2016Publication date: December 27, 2018Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Ittou SUGIMOTO, Hirotsugu KAWANAKA, Norikazu TAKAHASHI, Masato SASAKI
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Patent number: 10151268Abstract: Concave part is formed in a crown surface of the top of piston made of an aluminum alloy. This concave part is filled with mixed powder constituted of zirconia powder as a filler material and pure aluminum powder as a bonding material. Solid cylindrical rotary implement is brought into contact with concave part filled with mixed powder, and then pressed against piston under load while being rotated. Mixed powder is softened by frictional heat with rotary implement, whereby mixed powder is bound in a solid phase to concave part to form low thermal conductive part. With this, the bonding strength of low thermal conductive part to the crown surface of the top of the piston is improved.Type: GrantFiled: July 24, 2014Date of Patent: December 11, 2018Assignee: Hitachi Automotive Systems, Ltd.Inventors: Masato Sasaki, Norikazu Takahashi
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Publication number: 20170022930Abstract: The present invention provides piston production device and piston production method capable of surely holding friction-resistant ring regardless of presence or absence of decrease in accuracy of outside diameter of holding pin. Device has lower mold provided thereinside with cavity for forming piston and having opening, upper mold provided movably to open/close opening of cavity, and three holding pins rotatably supported by holding holes of upper mold and having top end portions protruding from lower surface of upper mold. Top end portions have flat holding surfaces formed by cutting tip end sides of top end portions in half from tip end edges along axial direction and stepped surfaces formed from upper ends of holding surfaces toward radial direction. By rotating holding pins in synchronization with each other in the same direction, friction-resistant ring is held by three points of holding surfaces.Type: ApplicationFiled: December 25, 2014Publication date: January 26, 2017Inventor: Norikazu Takahashi
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Publication number: 20160177864Abstract: Concave part is formed in a crown surface of the top of piston made of an aluminum alloy. This concave part is filled with mixed powder constituted of zirconia powder as a filler material and pure aluminum powder as a bonding material. Solid cylindrical rotary implement is brought into contact with concave part filled with mixed powder, and then pressed against piston under load while being rotated. Mixed powder is softened by frictional heat with rotary implement, whereby mixed powder is bound in a solid phase to concave part to form low thermal conductive part. With this, the bonding strength of low thermal conductive part to the crown surface of the top of the piston is improved.Type: ApplicationFiled: July 24, 2014Publication date: June 23, 2016Applicant: Hitachi Automotive Systems, Ltd.Inventors: Masato SASAKI, Norikazu TAKAHASHI
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Patent number: 9010297Abstract: A piston for an internal combustion engine includes a piston body made of an aluminum alloy material containing silicon and having a piston ring groove formed therein and an anodic oxide film formed on the piston ring groove, wherein a metal containing nickel and zinc is deposited around silicon particles in the anodic oxide film.Type: GrantFiled: September 9, 2013Date of Patent: April 21, 2015Assignee: Hitachi Automotive Systems, Ltd.Inventors: Takanori Sato, Masato Sasaki, Norikazu Takahashi
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Patent number: 8770266Abstract: An apparatus for producing a piston for an internal combustion engine by casting, the piston having a cooling channel therein, the apparatus including a fixed die with an upwardly opened cavity in which a core serving to form the cooling channel is to be disposed, a moveable die moveably disposed relative to the fixed die in a vertical direction and including a predetermined engaging portion, a guide die including an engaging portion engageable with the fixed die and having a same shape as that of the engaging portion of the moveable die, and a core retaining mechanism disposed in the guide die to retain the core in a predetermined position.Type: GrantFiled: March 11, 2013Date of Patent: July 8, 2014Assignee: Hitachi Automotive Systems, Ltd.Inventors: Masato Sasaki, Norikazu Takahashi
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Publication number: 20140076263Abstract: A piston for an internal combustion engine includes a piston body made of an aluminum alloy material containing silicon and having a piston ring groove formed therein and an anodic oxide film formed on the piston ring groove, wherein a metal containing nickel and zinc is deposited around silicon particles in the anodic oxide film.Type: ApplicationFiled: September 9, 2013Publication date: March 20, 2014Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Takanori SATO, Masato Sasaki, Norikazu Takahashi
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Publication number: 20130277005Abstract: An apparatus for producing a piston for an internal combustion engine by casting, the piston having a cooling channel therein, the apparatus including a fixed die with an upwardly opened cavity in which a core serving to form the cooling channel is to be disposed, a moveable die moveably disposed relative to the fixed die in a vertical direction and including a predetermined engaging portion, a guide die including an engaging portion engageable with the fixed die and having a same shape as that of the engaging portion of the moveable die, and a core retaining mechanism disposed in the guide die to retain the core in a predetermined position.Type: ApplicationFiled: March 11, 2013Publication date: October 24, 2013Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Masato SASAKI, Norikazu TAKAHASHI
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Publication number: 20120160206Abstract: A piston of an internal combustion engine, having a crown section. A wear-resistant ring is formed in the crown section to be used for forming a piston ring groove. The wear-resistant ring includes a porous formed body formed of a first material higher in hardness and larger in specific gravity than a base material of the piston, and a second material infiltrated in pores of the porous formed body and containing 20 weight % or more of magnesium.Type: ApplicationFiled: December 27, 2011Publication date: June 28, 2012Applicant: Hitachi Automotive Systems, Ltd.Inventors: Norikazu Takahashi, Masato Sasaki, Takanori Sato
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Publication number: 20060205445Abstract: Location positioning setting information is read from a setting storage section when the user depressed a power key. The location positioning setting information comprises setting information, such as the maximum duration time of the location positioning operation and the operation timing when a power-off event has been generated. A control section turns off the power of a display section, a speaker, a microphone, etc., excluding a communication function for transmitting location positioning and positioning results. In this state, a location positioning section acquires the positional information of the mobile communication terminal. Then, a wireless communication section transmits the location positioning information of the positioned mobile communication terminal to a predetermined monitoring server which manages the positional information of the mobile communication terminal.Type: ApplicationFiled: February 22, 2006Publication date: September 14, 2006Applicant: Casio Hitachi Mobile Communications Co., Ltd.Inventors: Hidenori Sakaniwa, Shigeyuki Sudo, Norikazu Takahashi, Yoshiaki Umehara, Masaru Uemura, Takashi Iida, Shinji Ueno
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Publication number: 20040049075Abstract: A method for preparing crystalline calcium pantothenate, which comprises the step of allowing a homogenous mixture containing crystalline calcium pantothenate and amorphous calcium pantothenate to absorb moisture. The aforementioned method comprises, for example, the following steps of (1) mixing crystalline calcium pantothenate and amorphous calcium pantothenate to prepare a homogenous mixture; and (2) allowing the homogenous mixture obtained in the above step (1) to absorb moisture, and enables efficient preparation of crystalline calcium pantothenate with extremely low hygroscopicity.Type: ApplicationFiled: May 14, 2003Publication date: March 11, 2004Inventors: Norikazu Takahashi, Tomoko Nozaki, Sotohiko Eimori, Motoo Shiba
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Patent number: 6582940Abstract: A method for preparing nondeliquescent crystalline calcium pantothenate which comprises the steps of: (1) stirring a supersaturated aqueous solution containing calcium pantothenate in a ratio of 60% (W/W) or more, for example, by using a grinder mill, to obtain a crystal suspension; and (2) drying the suspension. A nondeliquescent crystalline calcium pantothenate which is substantially free from an organic solvent can be efficiently prepared.Type: GrantFiled: September 12, 2001Date of Patent: June 24, 2003Assignee: Daiichi Fine Chemical Co., Ltd.Inventors: Norikazu Takahashi, Tomoko Nozaki, Sotohiko Eimori, Motoo Shiba
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Patent number: 5162838Abstract: A facsimile apparatus has a transparent plate on which a document may be located. The document is then scanned by a scanner which includes electronic solid state light generation means e.g. LEDs which illuminate the document, with the light reflected from the document being detected by a detector. An electronic signal corresponding to an image of the document may then be transmitted to a remote location. Alternately, the facsimile apparatus may be used to copy the document. Cut paper sheets are withdrawn from storage and an image printed thereon by a heat transfer system in which a film of ink is selectively heated. Paper on which an image has been printed is then received on the upper surface of the storage. The facsimile apparatus may also have a document transporter for moving a document past the scanner with the scanner fixed.Type: GrantFiled: July 24, 1991Date of Patent: November 10, 1992Assignee: Hitachi, Ltd.Inventors: Tatsuki Inuzuka, Keisuke Nakashima, Toru Takei, Yasuyuki Kojima, Kyoichi Nomura, Shinichi Shinoda, Katsubumi Ouchi, Hideki Muroya, Eizou Ebisui, Norikazu Takahashi, Tomoe Sasayama, Hideo Nakazawa, Naoki Kinoshita, Yasunori Iwafuji, Takeshi Kobayashi, Hisashi Matsumoto, Hiroshi Kawamura, Tadashi Tamaoki, Shogo Matsumoto, Kenji Yokoi, Atuhiko Urusihara