Patents by Inventor Kunihiko Suzuki
Kunihiko Suzuki 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: 10920683Abstract: Provided is a novel control device of an internal combustion engine capable of estimating an EGR rate in a transient state with high accuracy. Thus, in the present invention, unit spaces are formed by dividing a reference space of the intake passage into a plurality of spaces along a streamline through which the gas mixture of the intake air and the EGR gas flows, a physical model based on an advection equation for estimating the EGR rate of the gas mixture is established so as to correspond to each of the unit spaces, and the EGR rate at which the gas mixture flows into the combustion chamber is estimated by sequentially estimating the EGR rates of the unit spaces connected to head unit spaces from the head unit spaces by the physical model.Type: GrantFiled: June 4, 2018Date of Patent: February 16, 2021Assignee: Hitachi Automotive Systems, Ltd.Inventors: Takafumi Arakawa, Kunihiko Suzuki, Yoichi Iihoshi, Haoyun Shi, Toshio Hori, Yoshikuni Kurashima
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Patent number: 10910568Abstract: A light-emitting element with high emission efficiency and high reliability is provided. The light-emitting element includes a light-emitting layer containing a first organic compound, a second organic compound, and a guest material. The first organic compound has a nitrogen-containing six-membered heteroaromatic skeleton. In the light-emitting layer, the weight ratio of an organic compound having a nitrogen-containing five-membered heterocyclic skeleton with an NH group, a secondary amine skeleton with an NH group, or a primary amine skeleton with an NH group to the first organic compound is less than or equal to 0.03, or alternatively, the weight ratio of the organic compound having a nitrogen-containing five-membered heterocyclic skeleton with an NH group, a secondary amine skeleton with an NH group, or a primary amine skeleton with an NH group to the second organic compound is less than or equal to 0.01.Type: GrantFiled: April 27, 2020Date of Patent: February 2, 2021Inventors: Takeyoshi Watabe, Satoko Shitagaki, Kunihiko Suzuki, Harue Osaka, Satomi Mitsumori, Satoshi Seo
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Patent number: 10900426Abstract: An object is to provide a control device that calculates an intake pipe pressure of an engine, in which the humidity of air is measured, and a change in a gas constant due to a change in the total number of moles of air is corrected, to improve the accuracy of the calculation value of the intake pipe pressure.Type: GrantFiled: January 10, 2017Date of Patent: January 26, 2021Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Seiji Asano, Yoshihiko Akagi, Shinya Matohara, Kazuhiro Oryoji, Kunihiko Suzuki
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Patent number: 10896831Abstract: A supply part includes a first partition, a second partition under the first partition, a third partition under the second partition, a first flow path between the first partition and the second partition allowing a first gas to be introduced therein, a second flow path between the second partition and the third partition allowing a second gas to be introduced therein, a first piping extending from the second partition to reach below the third partition and being communicated with the first flow path, a second piping extending from the third partition to reach below the third partition and being communicated with the second flow path, and a convex portion provided on an outer circumferential surface of the first piping or an inner circumferential surface of the second piping protruding from one of the outer circumferential surface and the inner circumferential surface toward the other one.Type: GrantFiled: August 31, 2018Date of Patent: January 19, 2021Assignees: NuFlare Technology, Inc., Showa Denko K.K., Central Research Institute of Electric Power IndustryInventors: Kunihiko Suzuki, Naohisa Ikeya, Keisuke Fukada, Masahiko Ito, Isaho Kamata, Hidekazu Tsuchida, Hiroaki Fujibayashi, Hideyuki Uehigashi, Masami Naito, Kazukuni Hara, Hirofumi Aoki, Takahiro Kozawa
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Publication number: 20200395568Abstract: A novel light-emitting device is provided. A light-emitting device with high emission efficiency is provided. A light-emitting device with along lifetime is provided. A light-emitting device with low driving voltage is provided. The light-emitting device includes an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a hole-injection layer, a light-emitting layer, and an electron-transport layer. The hole-injection layer is positioned between the anode and the light-emitting layer. The electron-transport layer is positioned between the light-emitting layer and the cathode. The hole-injection layer contains a first substance and a second substance. The first substance is an organic compound which has a hole-transport property and a HOMO level higher than or equal to ?5.7 eV and lower than or equal to ?5.4 eV. The second substance exhibits an electron-accepting property with respect to the first substance.Type: ApplicationFiled: June 10, 2020Publication date: December 17, 2020Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Satoshi Seo, Hiromi SEO, Kunihiko Suzuki, Kanta Abe, Yuji Iwaki, Naoaki Hashimoto, Tsunenori Suzuki
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Publication number: 20200349451Abstract: A physical property prediction method that allows anyone to predict a physical property of an organic compound easily and accurately is provided. A physical property prediction system that allows anyone to predict a physical property of an organic compound easily and accurately is provided. Provided are a physical property prediction method including the step of learning a correlation between a molecular structure and a physical property of an organic compound and the step of predicting the target physical property value from the molecular structure of an object substance, and a physical property prediction system. A plurality of kinds of fingerprinting methods are used at the same time as notation methods of the molecular structure of the organic compound.Type: ApplicationFiled: August 24, 2018Publication date: November 5, 2020Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kunihiko Suzuki, Satoshi SEO, Harue OSAKA, Yoshitaka DOZEN
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Publication number: 20200328354Abstract: A light-emitting element that contains a fluorescent compound, which has high efficiency is provided. A light-emitting element in which the proportion of delayed fluorescence to the total light emitted from the light-emitting element is higher than that in a conventional light-emitting element is provided. Emission efficiency of the light-emitting element containing a fluorescent compound can be improved by increasing the probability of TTA caused by an organic compound in an EL layer, converting energy of triplet excitons, which does not contribute to light emission, into energy of singlet excitons, and making the fluorescent compound emit light by energy transfer of the singlet excitons.Type: ApplicationFiled: June 26, 2020Publication date: October 15, 2020Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kunihiko Suzuki, Satoshi Seo, Harue Osaka, Tsunenori Suzuki, Naoaki Hashimoto, Kyoko Takeda
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Publication number: 20200321544Abstract: As a novel substance having a novel skeleton, an organometallic complex with high emission efficiency which achieves improved color purity by a reduction of half width of an emission spectrum is provided. One embodiment of the present invention is an organometallic complex in which a ?-diketone and a six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom are ligands. In General Formula (G1), X represents a substituted or unsubstituted six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom. Further, R1 to R4 each represent a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.Type: ApplicationFiled: June 19, 2020Publication date: October 8, 2020Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hideko Inoue, Tomoya YAMAGUCHI, Hiromi SEO, Satoshi SEO, Kunihiko SUZUKI, Miki KANAMOTO
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Patent number: 10745824Abstract: A film forming apparatus according to an embodiment includes: a film forming chamber configured to house therein a substrate to perform film forming processing; a gas supplier located in an upper part of the film forming chamber and configured to supply a process gas onto the substrate; and a heater configured to heat the substrate, wherein the film forming chamber has a temperature-increase suppression region being a lower part of the gas supplier and suppressing a temperature increase of the gas supplied to an upper part of the heater.Type: GrantFiled: November 15, 2017Date of Patent: August 18, 2020Assignee: NuFlare Technology, Inc.Inventors: Kunihiko Suzuki, Naohisa Ikeya, Masayoshi Yajima, Kazukuni Hara, Hiroaki Fujibayashi, Hideki Matsuura, Katsumi Suzuki
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Publication number: 20200259105Abstract: A light-emitting element with high emission efficiency and high reliability is provided. The light-emitting element includes a light-emitting layer containing a first organic compound, a second organic compound, and a guest material. The first organic compound has a nitrogen-containing six-membered heteroaromatic skeleton. In the light-emitting layer, the weight ratio of an organic compound having a nitrogen-containing five-membered heterocyclic skeleton with an NH group, a secondary amine skeleton with an NH group, or a primary amine skeleton with an NH group to the first organic compound is less than or equal to 0.03, or alternatively, the weight ratio of the organic compound having a nitrogen-containing five-membered heterocyclic skeleton with an NH group, a secondary amine skeleton with an NH group, or a primary amine skeleton with an NH group to the second organic compound is less than or equal to 0.01.Type: ApplicationFiled: April 27, 2020Publication date: August 13, 2020Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Takeyoshi Watabe, Satoko SHITAGAKI, Kunihiko SUZUKI, Harue OSAKA, Satomi MITSUMORI, Satoshi SEO
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Publication number: 20200243371Abstract: To improve peelability, yield in a peeling step, and yield in manufacturing a flexible device. A peeling method is employed which includes a first step of forming a peeling layer containing tungsten over a support substrate; a second step of forming, over the peeling layer, a layer to be peeled formed of a stack including a first layer containing silicon oxynitride and a second layer containing silicon nitride in this order and forming an oxide layer containing tungsten oxide between the peeling layer and the layer to be peeled; a third step of forming a compound containing tungsten and nitrogen in the oxide layer by heat treatment; and a fourth step of peeling the peeling layer from the layer to be peeled at the oxide layer.Type: ApplicationFiled: April 16, 2020Publication date: July 30, 2020Inventors: Seiji YASUMOTO, Masataka SATO, Shingo EGUCHI, Kunihiko SUZUKI
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Patent number: 10700288Abstract: A light-emitting element that contains a fluorescent compound, which has high efficiency is provided. A light-emitting element in which the proportion of delayed fluorescence to the total light emitted from the light-emitting element is higher than that in a conventional light-emitting element is provided. Emission efficiency of the light-emitting element containing a fluorescent compound can be improved by increasing the probability of TTA caused by an organic compound in an EL layer, converting energy of triplet excitons, which does not contribute to light emission, into energy of singlet excitons, and making the fluorescent compound emit light by energy transfer of the singlet excitons.Type: GrantFiled: July 20, 2016Date of Patent: June 30, 2020Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kunihiko Suzuki, Satoshi Seo, Harue Osaka, Tsunenori Suzuki, Naoaki Hashimoto, Kyoko Takeda
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Publication number: 20200200100Abstract: There is provided a novel throttle valve controller device for an internal combustion engine that is capable of accurately producing a target torque for the internal combustion engine. The present invention includes a target fresh intake air flow rate calculating section that calculates a target fresh intake air flow rate passing through a throttle valve, an EGR gas flow rate calculating section that calculates an estimated EGR gas flow rate passing through the throttle valve, a target throttle intake gas flow rate calculating section that calculates a target intake gas flow rate passing through the throttle valve on the basis of the target fresh intake air flow rate and the estimated EGR gas flow rate, and a target throttle valve opening calculating section that calculates a target throttle valve opening from the target intake gas flow rate.Type: ApplicationFiled: May 11, 2018Publication date: June 25, 2020Inventors: Haoyun SHI, Takafumi ARAKAWA, Yoichi IIHOSHI, Kunihiko SUZUKI, Toshio HORI, Yoshikuni KURASHIMA
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Patent number: 10693085Abstract: A light-emitting element with a light-emitting substance comprising an organometallic complex. The organometallic complex having a structure represented by General Formula (G0). In the formula, X represents a substituted or unsubstituted six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom. Further, R1 and R2 each represent an alkyl group having 1 to 6 carbon atoms.Type: GrantFiled: December 8, 2017Date of Patent: June 23, 2020Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hideko Inoue, Tomoya Yamaguchi, Hiromi Seo, Satoshi Seo, Kunihiko Suzuki, Miki Kanamoto
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Publication number: 20200194692Abstract: A light-emitting element having high external quantum efficiency is provided. A light-emitting element having a long lifetime is provided. A light-emitting element is provided which includes a light-emitting layer containing a phosphorescent compound, a first organic compound, and a second organic compound between a pair of electrodes, in which a combination of the first organic compound and the second organic compound forms an exciplex (excited complex). The light-emitting element transfers energy by utilizing an overlap between the emission spectrum of the exciplex and the absorption spectrum of the phosphorescent compound and thus has high energy transfer efficiency. Therefore, a light-emitting element having high external quantum efficiency can be obtained.Type: ApplicationFiled: February 21, 2020Publication date: June 18, 2020Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Satoko SHITAGAKI, Satoshi SEO, Nobuharu OHSAWA, Hideko INOUE, Kunihiko SUZUKI
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Patent number: 10644250Abstract: A light-emitting element with high emission efficiency and high reliability is provided. The light-emitting element includes a light-emitting layer containing a first organic compound, a second organic compound, and a guest material. The first organic compound has a nitrogen-containing six-membered heteroaromatic skeleton. In the light-emitting layer, the weight ratio of an organic compound having a nitrogen-containing five-membered heterocyclic skeleton with an NH group, a secondary amine skeleton with an NH group, or a primary amine skeleton with an NH group to the first organic compound is less than or equal to 0.03, or alternatively, the weight ratio of the organic compound having a nitrogen-containing five-membered heterocyclic skeleton with an NH group, a secondary amine skeleton with an NH group, or a primary amine skeleton with an NH group to the second organic compound is less than or equal to 0.01.Type: GrantFiled: December 28, 2016Date of Patent: May 5, 2020Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Takeyoshi Watabe, Satoko Shitagaki, Kunihiko Suzuki, Harue Osaka, Satomi Mitsumori, Satoshi Seo
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Patent number: 10636692Abstract: To improve peelability, yield in a peeling step, and yield in manufacturing a flexible device. A peeling method is employed which includes a first step of forming a peeling layer containing tungsten over a support substrate; a second step of forming, over the peeling layer, a layer to be peeled formed of a stack including a first layer containing silicon oxynitride and a second layer containing silicon nitride in this order and forming an oxide layer containing tungsten oxide between the peeling layer and the layer to be peeled; a third step of forming a compound containing tungsten and nitrogen in the oxide layer by heat treatment; and a fourth step of peeling the peeling layer from the layer to be peeled at the oxide layer.Type: GrantFiled: March 1, 2018Date of Patent: April 28, 2020Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Seiji Yasumoto, Masataka Sato, Shingo Eguchi, Kunihiko Suzuki
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Publication number: 20200123989Abstract: Provided is a novel control device of an internal combustion engine capable of estimating an EGR rate in a transient state with high accuracy. Thus, in the present invention, unit spaces are formed by dividing a reference space of the intake passage into a plurality of spaces along a streamline through which the gas mixture of the intake air and the EGR gas flows, a physical model based on an advection equation for estimating the EGR rate of the gas mixture is established so as to correspond to each of the unit spaces, and the EGR rate at which the gas mixture flows into the combustion chamber is estimated by sequentially estimating the EGR rates of the unit spaces connected to head unit spaces from the head unit spaces by the physical model.Type: ApplicationFiled: June 4, 2018Publication date: April 23, 2020Inventors: Takafumi ARAKAWA, Kunihiko SUZUKI, Yoichi IIHOSHI, Haoyun SHI, Toshio HORI, Yoshikuni KURASHIMA
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Publication number: 20200122772Abstract: A steering system includes a steered shaft, a ball screw nut, balls, a housing, a rolling bearing, and a snap ring configured to prevent the rolling bearing from detaching from the ball screw nut. The rolling bearing includes double-row rolling element arrays, an outer ring, a first inner ring, and a second inner ring. The ball screw nut has a receiving portion. The snap ring contacts a side face of the second inner ring to push the second inner ring toward the receiving portion via the first inner ring. A resistance force received from the second outer peripheral fitting surface when the second inner ring moves in the axial direction in a state in which detachment of the rolling bearing is not prevented by the snap ring is smaller than a pushing force with which the snap ring pushes the second inner ring.Type: ApplicationFiled: September 25, 2019Publication date: April 23, 2020Applicant: JTEKT CORPORATIONInventors: Kunihiko SUZUKI, Hiroki YAMAHANA, Ryuta SUZUKI, Takayuki SUZUKI, Daisuke NISHIO
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Publication number: 20200109673Abstract: An object is to provide a control device that calculates an intake pipe pressure of an engine, in which the humidity of air is measured, and a change in a gas constant due to a change in the total number of moles of air is corrected, to improve the accuracy of the calculation value of the intake pipe pressure.Type: ApplicationFiled: January 10, 2017Publication date: April 9, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Seiji ASANO, Yoshihiko AKAGI, Shinya MATOHARA, Kazuhiro ORYOJI, Kunihiko SUZUKI