Patents by Inventor Isamu Tanaka
Isamu Tanaka 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: 11162434Abstract: Provided is a throttle device including a total of two throttle units in each two cylinders in an engine 1, each of the throttle units having a unit body having intake air passages corresponding to four cylinders of the engine, a throttle shaft rotatably supported by the unit body, throttle valves secured to the throttle shaft to open and close the intake air passages for the cylinders, a motor, and a deceleration mechanism decelerating rotation of a drive shaft of the motor and transmitting the decelerated rotation to the throttle shaft, in which a deceleration ratio of the deceleration mechanism provided in a first throttle unit and a deceleration ratio of the deceleration mechanism provided in a second throttle unit out of the two throttle units are different from each other.Type: GrantFiled: November 18, 2020Date of Patent: November 2, 2021Assignee: MIKUNI COPORATIONInventor: Isamu Tanaka
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Patent number: 11149657Abstract: Provided is a throttle device including a total of two throttle units in two cylinders in an engine, each of the throttle units having a throttle shaft, throttle valves, and a motor driving and rotating the throttle shaft, in which a return spring provided in a first throttle unit and a return spring provided in a second throttle unit out of the two throttle units are components of the same type and have mutually different installation forms in the throttle units such that biasing torques at the same degree of opening of the throttle valves differ from each other, thereby enabling performances of responding to a change in rotation speed to be different from each other.Type: GrantFiled: November 18, 2020Date of Patent: October 19, 2021Assignee: MIKUNI CORPORATIONInventor: Isamu Tanaka
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Patent number: 11143117Abstract: Provided is a throttle device including a total of two throttle units in an engine for each two cylinders, each of the throttle units having a unit body having intake air passages corresponding to the four cylinders of the engine, a throttle shaft rotatably supported by the unit body, throttle valves secured to the throttle shaft to open and close the intake air passages for the cylinders, and a motor driving and rotating the throttle shaft, in which a first motor provided in a first throttle unit and a second motor provided in a second throttle unit out of the two throttle units have mutually different responsivities to a change in rotation speed.Type: GrantFiled: November 18, 2020Date of Patent: October 12, 2021Assignee: MIKUNI CORPORATIONInventor: Isamu Tanaka
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Publication number: 20210172387Abstract: Provided is a throttle device including a total of two throttle units in two cylinders in an engine, each of the throttle units having a throttle shaft, throttle valves, and a motor driving and rotating the throttle shaft, in which a return spring provided in a first throttle unit and a return spring provided in a second throttle unit out of the two throttle units are components of the same type and have mutually different installation forms in the throttle units such that biasing torques at the same degree of opening of the throttle valves differ from each other, thereby enabling performances of responding to a change in rotation speed to be different from each other.Type: ApplicationFiled: November 18, 2020Publication date: June 10, 2021Applicant: MIKUNI CORPORATIONInventor: Isamu TANAKA
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Publication number: 20210172386Abstract: Provided is a throttle device including a total of two throttle units in each two cylinders in an engine 1, each of the throttle units having a unit body having intake air passages corresponding to four cylinders of the engine, a throttle shaft rotatably supported by the unit body, throttle valves secured to the throttle shaft to open and close the intake air passages for the cylinders, a motor, and a deceleration mechanism decelerating rotation of a drive shaft of the motor and transmitting the decelerated rotation to the throttle shaft, in which a deceleration ratio of the deceleration mechanism provided in a first throttle unit and a deceleration ratio of the deceleration mechanism provided in a second throttle unit out of the two throttle units are different from each other.Type: ApplicationFiled: November 18, 2020Publication date: June 10, 2021Applicant: MIKUNI CORPORATIONInventor: Isamu TANAKA
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Publication number: 20210172390Abstract: Provided is a throttle device including a total of two throttle units in an engine for each two cylinders, each of the throttle units having a unit body having intake air passages corresponding to the four cylinders of the engine, a throttle shaft rotatably supported by the unit body, throttle valves secured to the throttle shaft to open and close the intake air passages for the cylinders, and a motor driving and rotating the throttle shaft, in which a first motor provided in a first throttle unit and a second motor provided in a second throttle unit out of the two throttle units have mutually different responsivities to a change in rotation speed.Type: ApplicationFiled: November 18, 2020Publication date: June 10, 2021Applicant: MIKUNI CORPORATIONInventor: Isamu TANAKA
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Patent number: 9023680Abstract: A method for producing a compound semiconductor layer comprises dissolving a metal feedstock comprising at least one of a group I-B element and a group III-B element, in a metal state, in a mixed solvent comprising an organic compound containing a chalcogen element and a Lewis base organic compound to produce a solution for forming a semiconductor; forming a coat using the solution for forming a semiconductor; and heat-treating the coat.Type: GrantFiled: July 27, 2010Date of Patent: May 5, 2015Assignee: KYOCERA CorporationInventors: Seiichiro Inai, Yoshihide Okawa, Isamu Tanaka, Koichiro Yamada
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Patent number: 8772826Abstract: It is an object to provide a photoelectric conversion device with high photoelectric conversion efficiency. The photoelectric conversion device includes an electrode layer, and a light absorbing layer located on the electrode layer. The light absorbing layer is comprised of a plurality of stacked semiconductor layers containing a chalcopyrite-based compound semiconductor. The semiconductor layers contain oxygen. A molar concentration of the oxygen in surfaces and their vicinities of the semiconductor layers where the semiconductor layers are stacked on each other is higher than average molar concentrations of the oxygen in the semiconductor layers.Type: GrantFiled: May 30, 2011Date of Patent: July 8, 2014Assignee: KYOCERA CorporationInventors: Hideaki Asao, Rui Kamada, Shuichi Kasai, Seiji Oguri, Isamu Tanaka, Nobuyuki Horiuchi, Kazumasa Umesato
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Publication number: 20130125982Abstract: It is aimed to provide a photoelectric conversion device having high adhesion between a light-absorbing layer and an electrode layer as well as high photoelectric conversion efficiency. A photoelectric conversion device comprises a light-absorbing layer including a chalcopyrite-based compound semiconductor and oxygen. The light-absorbing layer includes voids therein. An atomic concentration of oxygen in the vicinity of the voids is higher than an average atomic concentration of oxygen in the light-absorbing layer.Type: ApplicationFiled: July 27, 2011Publication date: May 23, 2013Applicant: KYOCERA CORPORATIONInventors: Seiji Oguri, Isamu Tanaka, Norihiko Matsushima, Akio Yamamoto
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Publication number: 20130069187Abstract: It is an object to provide a photoelectric conversion device with high photoelectric conversion efficiency. The photoelectric conversion device includes an electrode layer, and a light absorbing layer located on the electrode layer. The light absorbing layer is comprised of a plurality of stacked semiconductor layers containing a chalcopyrite-based compound semiconductor. The semiconductor layers contain oxygen. A molar concentration of the oxygen in surfaces and their vicinities of the semiconductor layers where the semiconductor layers are stacked on each other is higher than average molar concentrations of the oxygen in the semiconductor layers.Type: ApplicationFiled: May 30, 2011Publication date: March 21, 2013Applicant: KYOCERA CORPORATIONInventors: Hideaki Asao, Rui Kamada, Shuichi Kasai, Seiji Oguri, Isamu Tanaka, Nobuyuki Horiuchi, Kazumasa Umesato
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Publication number: 20130000722Abstract: It is aimed to provide a photoelectric conversion device having improved conversion efficiency, and a method for manufacturing the photoelectric conversion device. For achieving this object, a photoelectric conversion device including a first semiconductor layer and a second semiconductor layer is employed. In the photoelectric conversion device, the first semiconductor layer includes one principal surface on which a plurality of projections are scattered, includes a I-III-VI group compound semiconductor, and has a first conductivity type. The second semiconductor layer is disposed on the one principal surface, has a thickness in a normal direction of the one principal surface, and has a second conductivity type different from the first conductivity type. Further, a first distance along which each of the projections is projected in the normal direction is longer than a second distance along which the second semiconductor layer is provided in the normal direction.Type: ApplicationFiled: February 28, 2011Publication date: January 3, 2013Applicant: KYOCERA CORPORATIONInventors: Kazuki Yamada, Isamu Tanaka, Seiichiro Inai
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Publication number: 20120319244Abstract: A method for manufacturing a semiconductor layer according to an embodiment of the present invention comprises preparing a first compound, preparing a second compound, making a semiconductor layer forming solution, and forming a semiconductor layer including a group compound by using this semiconductor layer forming solution. The first compound contains a first chalcogen-element-containing organic compound, a first Lewis base, a I-B group element, and a first III-B group element. The second compound contains an organic ligand and a second III-B group element. The semiconductor layer forming solution contains the first compound, the second compound, and an organic solvent.Type: ApplicationFiled: January 25, 2011Publication date: December 20, 2012Applicant: KYOCERA CORPORATIONInventors: Seiji Oguri, Keizo Takeda, Koichiro Yamada, Kotaro Tanigawa, Isamu Tanaka, Riichi Sasamori, Hiromitsu Ogawa
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Publication number: 20120288988Abstract: It is an object of the present invention to provide a method for manufacturing a semiconductor layer, a method for manufacturing a photoelectric conversion device, and a semiconductor layer forming solution which are able to easily manufacture a good semiconductor layer having a desired thickness. To accomplish this object, a starting solution containing a metallic element, a chalcogen organic compound and a Lewis base organic compound is initially produced. Next, heating the starting solution produces fine particles. The fine particles contain a metal chalcogenide which is a compound of the metallic element and a chalcogen element included in the chalcogen organic compound. A semiconductor layer is formed by using a semiconductor layer forming solution in which the fine particles are dispersed.Type: ApplicationFiled: December 16, 2010Publication date: November 15, 2012Applicant: KYOCERA CORPORATIONInventors: Seiichiro Inai, Daisuke Nishimura, Isamu Tanaka
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Patent number: 8278134Abstract: The production method of a photoelectric conversion device comprises adding a chalcogenide powder of a group-IIIB element to an organic solvent including a single source precursor containing a group-IB element, a group-IIIB element, and a chalcogen element to prepare a solution for forming a semiconductor, and forming a semiconductor containing a group-I-III-VI compound by use of the solution for forming a semiconductor.Type: GrantFiled: March 29, 2010Date of Patent: October 2, 2012Assignee: Kyocera CorporationInventors: Isamu Tanaka, Seiichiro Inai, Yoshihide Okawa, Daisuke Nishimura, Sentaro Yamamoto
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Publication number: 20120070937Abstract: A method for producing a compound semiconductor layer comprises dissolving a metal feedstock comprising at least one of a group I-B element and a group III-B element, in a metal state, in a mixed solvent comprising an organic compound containing a chalcogen element and a Lewis base organic compound to produce a solution for forming a semiconductor; forming a coat using the solution for forming a semiconductor; and heat-treating the coat.Type: ApplicationFiled: July 27, 2010Publication date: March 22, 2012Applicant: KYOCERA CORPORATIONInventors: Seiichiro Inai, Yoshihide Okawa, Isamu Tanaka, Koichiro Yamada
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Publication number: 20110244624Abstract: The production method of a photoelectric conversion device comprises the steps of adding a chalcogenide powder of a group-IIIB element to an organic solvent including a single source precursor containing a group-IB element, a group-IIIB element, and a chalcogen element to prepare a solution for forming a semiconductor, and forming a semiconductor containing a group-I-III-VI compound by use of the solution for forming a semiconductor.Type: ApplicationFiled: March 29, 2010Publication date: October 6, 2011Applicant: KYOCERA CORPORATIONInventors: Isamu Tanaka, Seiichiro Inai, Yoshihide Okawa, Daisuke Nishimura, Sentaro Yamamoto
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Publication number: 20100098506Abstract: The invention relates to a cemented carbide material having a hard phase including tungsten carbide (WC) grains having an average grain size of 0.3 microns or less and also including cobalt (Co) as a bonding phase. The material also includes cobalt tungsten carbide grains that have a smaller average grain size than that of the tungsten carbide grains. The cemented carbide material has use, among others, in making cutting tools.Type: ApplicationFiled: December 22, 2009Publication date: April 22, 2010Applicant: KYOCERA CORPORATIONInventors: Isamu TANAKA, Takeshi OHKUMA, Shintaro KUBO
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Patent number: 7673569Abstract: When a first article is to be delivered to a customer and a second article is to be collected from the customer, first rack components required for delivery of the first article and second rack components not required for delivery of the first article, yet required for collecting the second article, are specified. Delivery procedure and collection procedure of the articles using the specified first rack components and second rack components are instructed to a worksite. Accordingly, delivery and collection of the articles can be carried out by making efficient use of the rack components commonly used for the first article and the second article.Type: GrantFiled: March 15, 2005Date of Patent: March 9, 2010Assignee: Ricoh Company, Ltd.Inventors: Sakae Ishikawa, Satoshi Ishihara, Tomoaki Arai, Isamu Tanaka
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Patent number: 7597086Abstract: A throttle assembly for intake air protects a link mechanism for interlocking throttles with each other from water and mud and maintains the throttle operability in a satisfactory state. The throttle assembly for intake air includes a plurality of throttle devices for injecting fuel into intake air to generate an air-fuel mixture; a link mechanism for connecting driving portions of the throttle devices with each other, a link mechanism housing chamber defined by an outer wall member for forming a link mechanism housing chamber and housing the link mechanism, and seal members provided at the connected or mated portions of the outer wall member and a different member or the connected or mated portions of a plurality of outer wall configuring members which configure the outer wall member.Type: GrantFiled: March 4, 2008Date of Patent: October 6, 2009Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yasuhiro Kuji, Akinobu Wakabayashi, Yoshiyuki Ayakoji, Jun Kiyono, Isamu Tanaka
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Publication number: 20080216794Abstract: A throttle assembly for intake air protects a link mechanism for interlocking throttles with each other from water and mud and maintains the throttle operability in a satisfactory state. The throttle assembly for intake air includes a plurality of throttle devices for injecting fuel into intake air to generate an air-fuel mixture; a power transmission mechanism for interlocking the driving portions of the throttle devices with each other, a power transmission mechanism housing chamber defined by an outer wall member for forming a power transmission mechanism housing chamber and housing the power transmission mechanism, and seal means provided to the connected or mated portions of the outer wall member and a different member or the connected or mated portions of a plurality of outer wall configuring members which configure the outer wall member.Type: ApplicationFiled: March 4, 2008Publication date: September 11, 2008Inventors: Yasuhiro Kuji, Akinobu Wakabayashi, Yoshiyuki Ayakoji, Jun Kiyono, Isamu Tanaka