Patents by Inventor Yasushi Iwata
Yasushi Iwata 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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Patent number: 8376023Abstract: A die-casting die is provided. The die-casting die may include a cavity forming surface. A part of the cavity forming surface may be coated with a surface treatment layer. The surface treatment layer may include a mixture of fibrous carbon and particle carbon and have a thermal conductivity that increases in connection to an increase in an acted pressure.Type: GrantFiled: October 16, 2009Date of Patent: February 19, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, MEC International Co., Ltd.Inventors: Yuichi Furukawa, Fumio Kawahara, Yasushi Iwata, Hiroaki Iwahori, Jun Yaokawa, Atsuto Okamoto
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Publication number: 20130000727Abstract: Disclosed is a solar battery using a silicon semiconductor, having a high quantum-conversion efficiency, requiring few number of production steps during manufacturing, and capable of being recycled in view of environmental load and material recycling. Specifically, the solar battery has a basic structure of P-SN-N junction in which refined silicon clusters are inserted in P-N junction, and includes a quantum dot layer having a multiple energy level structure whose energy level is between an energy level of a valence band and an energy level of a conduction band. The quantum dot layer includes a periodic arrangement of silicon quantum dots formed of silicon clusters of 2.5 nm or less in average particle diameter and the distance between the quantum dots is 1 nm or less.Type: ApplicationFiled: February 25, 2011Publication date: January 3, 2013Applicant: National Institute of Advanced Industrial Science and TechnologyInventors: Yasushi Iwata, Kanako Tomita
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Publication number: 20120156087Abstract: This invention aims to provide a recycled magnesium alloy having a good corrosion resistance and a process for producing the same. The process of the present invention comprises an adjusting step of adjusting composition of molten metal of a magnesium alloy so as to comprise, by mass: Al: 5 to 10%, Zn: not less than 1% and not less than three times of Cu content (%), Mn: 0.1 to 1.5% and the remainder: Mg and impurities with or without one or more reforming elements. While the upper limit of the Al content is restricted to a low level, the Zn content is increased in accordance with the Cu content. Therefore, the recycled magnesium alloy produced by this process can effectively suppress corrosion caused by Cu, which is one of corrosion-causing elements.Type: ApplicationFiled: June 6, 2010Publication date: June 21, 2012Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Hiroyuki Kawabata, Naohisa Nishino, Sonoko Nishino, Yasushi Iwata, Yoshikazu Genma, Tsuyoshi Seguchi
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Publication number: 20110264425Abstract: A molten alloy solidification analyzing method of the invention is characterized in that the amount of change in fraction solid is calculated based on the solidification rate of molten alloy and the solidification rate parameter that is a parameter for evaluating the influence of the solidification rate on solidification of the molten alloy, according to the fraction solid. By conducting such a simulation that takes into consideration the supercooling, a highly accurate solidification analysis is relatively easily performed for various molten alloys.Type: ApplicationFiled: December 3, 2009Publication date: October 27, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Jun Yaokawa, Yasushi Iwata, Shuxin Dong, Yoshio Sugiyama, Hiroaki Iwahori, Takashi Nakamichi, Norihiro Amano, Hiroyuki Ikuta
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Publication number: 20110209844Abstract: PROBLEMS A method for die-casting that fluidity of molten material is satisfactory and the molten material solidifies with suitable speed is realized. MEANS OF SOLVING THE PROBLEMS A die-casting die 12 comprises a cavity forming surface 9b. A part of the cavity forming surface 9b is coated with a surface treatment layer 24 having a thermal conductivity that increases in connection to an increase in an acted pressure. Satisfactory fluidity is kept at a cavity forming surface 8b coated with the surface treatment layer 24 until a filling of the molten material to the cavity 9 is completed. The molten material is cooled by the cavity forming surface 8b coated with the surface treatment layer 24 increasing the thermal conductivity after the filling of the molten material to the cavity 9 is completed.Type: ApplicationFiled: October 16, 2009Publication date: September 1, 2011Applicants: Toyota Jidosha Kabushkiki Kasha, Mec International Co. LtdInventors: Yuichi Furukawa, Fumio Kawahara, Yasushi Iwata, Hiroaki Iwahori, Jun Yaokawa, Atsuto Okamoto
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Publication number: 20110184401Abstract: The present invention relates to a treatment device utilized in the freezing treatment method and its treatment planning device, and has an object to settle a freezing periodĀ·defrosting period according to a size of a treatment portion. A cryotherapy device comprises a gas supply-exhaust system 100, a control system 200 therefore and a freezing probe system 300. The gas supply-exhaust system 100 supplies a freezing gas and a defrosting gas to a probe 60 of the freezing probe system 300 to freeze and defrost the treatment portion surrounding the tip of the probe 60 by the JouleĀ·Thomson effect. The control system 200 controls the gas supply-exhaust system 100 and makes treatment planning data for this control. The treatment planning data includes a freezingĀ·defrosting sequence to determine the freezing period and the defrosting period. The determination of this sequence is performed by the computer in the control system 200.Type: ApplicationFiled: July 10, 2009Publication date: July 28, 2011Inventors: Kansei Iwata, Yasushi Iwata, Taisuke Nagasawa, Masafumi Kawamura, Yotaro Izumi, Masanori Inoue, Norimasa Tsukada, Hideki Yashiro
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Publication number: 20110183155Abstract: A mold includes: a base; and a contact surface which is provided on the base and which comes into contact with a molten material. The contact surface is provided with a first surface portion that includes a first fiber layer in which first carbon fibers are raised, and a second surface portion having different surface characteristics from the first surface portion.Type: ApplicationFiled: January 24, 2011Publication date: July 28, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Jun Yaokawa, Yasushi Iwata, Yoshio Sugiyama, Hiroaki Iwahori, Shuxin Dong, Yuichi Furukawa
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Publication number: 20110127403Abstract: A surface-treated mold that includes a mold, a metal layer that is provided on a surface of the mold and contains at least one metal selected from nickel, chromium, tungsten and brass, and a carbon film that is provided on a surface of the metal layer, wherein the metal layer contains carbon, and the carbon concentration in the metal layer is higher between the boundary with the carbon film and the center of the metal layer than that between the boundary with the mold and the center of the metal layer.Type: ApplicationFiled: November 12, 2010Publication date: June 2, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuichi Furukawa, Jun Yaokawa, Yasushi Iwata
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Patent number: 7886711Abstract: An oil drain passage that guides, to an oil pan, lubrication oil in a space surrounded by a side wall of an engine block and an inner wall of a chain cover is formed with a partition formed by contacting a rib provided on the inner wall of the chain cover and a rib provided on the side wall of the engine block. An opening is provided in a portion of the partition.Type: GrantFiled: January 30, 2009Date of Patent: February 15, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yasushi Iwata, Tatsuhiro Terada
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Patent number: 7845342Abstract: A crankcase that is provided in an internal combustion engine, in which blow-by gas is returned to an intake passage via a gas outflow passage formed in a cylinder block so as to extend in a direction from an upper portion to a lower portion of the cylinder, includes: a partition wall extending in a direction from an upper portion to a lower portion of the crankcase and facing an inner side surface of a crankcase outer wall that also extends in the direction from the upper portion to the lower portion of the crankcase; an internal space that is formed between the partition wall and the inner side surface of the crankcase outer wall and connected to the gas outflow passage at an upper end of the internal space; and a window that is formed on the partition wall to communicate an inside and outside of the internal space.Type: GrantFiled: January 23, 2009Date of Patent: December 7, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tatsuhiro Terada, Yasushi Iwata
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Patent number: 7836859Abstract: A first rib extending downward from a middle portion to an outer peripheral portion is formed on an inner wall of a chain cover. In addition a second rib, which extends downward from the outer peripheral portion to the middle portion and has a height lower than that of the first rib, is formed above the first rib. A projection extending in the height direction of the second rib is provided on an upper surface of the second rib.Type: GrantFiled: January 23, 2009Date of Patent: November 23, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yasushi Iwata, Tatsuhiro Terada
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Publication number: 20100269803Abstract: In an internal combustion engine (10), oil in an oil pan (21) is pressure-fed to lubrication sites through operation of an oil pump (22). After being used for lubrication of the lubrication sites, the oil runs down and collects in the oil pan (21). The internal combustion engine (10) is provided with a blow-by gas process device (40) including a communication passageway (48) that connects a portion of the intake passageway (12) on the downstream side of the throttle valve (13) in the intake flow direction and an interior of the crankcase (15) in communication. A pressure chamber (47) to which an end portion of the communication passageway (48) is open is defined in the interior of the crankcase (15). Oil scattered in the interior of the crankcase (15) is introduced into an interior of the pressure chamber (47) before mixing with the oil collected in the oil pan (21).Type: ApplicationFiled: December 23, 2008Publication date: October 28, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasushi Iwata
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Publication number: 20100192887Abstract: An oil recovery part (20A, 20B) for guiding oil to an inner side of a peripheral wall of a cylinder head (2) is provided at a front wall upper end of the cylinder head (2), the oil leaking from a concave bearing (3a, 3b) that supports a camshaft (8, 9) provided at a forefront end of a cam housing (3).Type: ApplicationFiled: July 18, 2008Publication date: August 5, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventor: Yasushi Iwata
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Patent number: 7648586Abstract: In a surface layer of an ultra-low carbon stainless steel comprising a seal function layer in the surface layer, an ion such as a nitrogen ion is implanted to form the seal function layer. Since the ultra-low carbon stainless steel comprising the seal function layer is excellent in elasticity, sealing properties, peelability and abrasion resistance, it can make a seal material which has been used unnecessary, and can realize all stainless-made products such as seal and joint system parts.Type: GrantFiled: July 30, 2003Date of Patent: January 19, 2010Assignee: National Institute of Advanced Industrial & TechnologyInventors: Yasushi Iwata, Akiyoshi Chayahara
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Publication number: 20090194062Abstract: An oil drain passage that guides, to an oil pan, lubrication oil in a space surrounded by a side wall of an engine block and an inner wall of a chain cover is formed with a partition formed by contacting a rib provided on the inner wall of the chain cover and a rib provided on the side wall of the engine block. An opening is provided in a portion of the partition.Type: ApplicationFiled: January 30, 2009Publication date: August 6, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasushi IWATA, Tatsuhiro TERADA
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Publication number: 20090188478Abstract: A crankcase that is provided in an internal combustion engine, in which blow-by gas is returned to an intake passage via a gas outflow passage formed in a cylinder block so as to extend in a direction from an upper portion to a lower portion of the cylinder, includes: a partition wall extending in a direction from an upper portion to a lower portion of the crankcase and facing an inner side surface of a crankcase outer wall that also extends in the direction from the upper portion to the lower portion of the crankcase; an internal space that is formed between the partition wall and the inner side surface of the crankcase outer wall and connected to the gas outflow passage at an upper end of the internal space; and a window that is formed on the partition wall to communicate an inside and outside of the internal space.Type: ApplicationFiled: January 23, 2009Publication date: July 30, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tatsuhiro TERADA, Yasushi Iwata
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Publication number: 20090188465Abstract: A first rib extending downward from a middle portion to an outer peripheral portion is formed on an inner wall of a chain cover. In addition a second rib, which extends downward from the outer peripheral portion to the middle portion and has a height lower than that of the first rib, is formed above the first rib. A projection extending in the height direction of the second rib is provided on an upper surface of the second rib.Type: ApplicationFiled: January 23, 2009Publication date: July 30, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasushi Iwata, Tatsuhiro Terada
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Publication number: 20090114848Abstract: The invention provides a cluster film formation system in which, in a cluster formation container 5, target 1 is irradiated with laser beams 2 to generate material vapor, which generates a shock wave 4 of an inert gas, and the shock wave 4 is reflected by a wall of the cluster formation container 5 to confine the material vapor having progressed in a particular region, and atoms or molecules of the material vapor and the inert gas collide with each other mutually to form groups of clusters, which are made to flow out through an outflow window 7, and sprayed deposited on a substrate 9 to form a cluster film 10.Type: ApplicationFiled: December 7, 2006Publication date: May 7, 2009Applicant: National Institute of Advanced Industrial Science and TechnologyInventors: Yasushi Iwata, Toshio Takiya
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Patent number: 7221963Abstract: An antenna selection diversity apparatus capable of shortening, when antennas are switched in frame units, a measuring time of antennas and shortening the time of selecting an optimal antenna from among a plurality of antennas on standby. In this apparatus, an antenna selection section (109) selects one of three antennas as an antenna in actual use for a period of a plurality of frames consecutively according to selection priority stored in an antenna information storage section (108) and gives an instruction for selecting one of two antennas on standby as an antenna to be measured once at a period of a plurality of frames to an antenna selection switch (104).Type: GrantFiled: November 4, 2004Date of Patent: May 22, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshiharu Ishihara, Yasushi Iwata, Toshio Obara
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Patent number: 7137438Abstract: A storage apparatus is provided that comprises a display case part with an inside thereof being dividable into a plurality of zones, a supply duct that is connected to supply openings for supplying conditioning air for controlling environmental conditions to the plurality of zones respectively, and an exhaust duct that is connected to exhaust openings for taking in air from the plurality of zones. In this storage apparatus, conditioning air such as cold air or hot air is circulated in the respective zones, and the environmental conditions can be adjusted efficiently in zone basis. Therefore, in a storage apparatus equipped with an open-type display case part, it is possible to dispense with an air curtain covering the entire open side, so that a storage apparatus with a high storage capacity is provided.Type: GrantFiled: December 27, 2002Date of Patent: November 21, 2006Assignee: GAC CorporationInventors: Satoshi Nomura, Yuuichi Minamiyama, Ichiro Furihata, Kenji Kuno, Yasushi Iwata