Patents by Inventor Yuji Ishii
Yuji Ishii 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: 20210122861Abstract: The purpose of the present invention is to obtain an ethylene??-olefin?non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene??-olefin?non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an ?-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4) 125° C. is 5-100, and (4) the B value is 1.20 or more.Type: ApplicationFiled: December 23, 2020Publication date: April 29, 2021Applicant: MITSUI CHEMICALS, INC.Inventors: Koji ENDO, Mayumi HIWARA, Sadahiko MATSUURA, Yusuke MIZOBUCHI, Yuichi YAMAMURA, Yuji NOGUCHI, Yuji ISHII, Tatsuya SAKAI, Keisuke SHISHIDO, Kotaro ICHINO, Kiyohide INOMATA, Fumito TAKEUCHI, Kenta IDE
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Publication number: 20210086843Abstract: In a work vehicle of the present invention, a load carrying bed includes a floor panel, a pair of left and right side panels, and a rear gate which is openable and closable. The rear gate includes left and right lock operational portions for maintaining the rear gate under a closing posture through engagement with locking engagement portions formed in the left and right side panels, a single handle disposed at an intermediate position in the left/right direction of the rear gate and supported to be pivotable about a horizontally oriented operational axis X, and left and right operational wires for operating left and right locking members in a direction for pulling these locking members out of the locking engagement portions by an operation of the handle about the operational axis X.Type: ApplicationFiled: May 14, 2020Publication date: March 25, 2021Inventors: Yuji Ishii, Takashi Fujii
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Patent number: 10950600Abstract: Provided are a semiconductor device capable of preventing erroneous operation and providing a field plate effect, and a method of manufacturing the semiconductor device. In a diode, a gate electrode, a p+ source region, and an n-type body region are electrically coupled to one another. A contact region is disposed between the n-type body region and the p+ source region in a first surface of a semiconductor substrate.Type: GrantFiled: January 15, 2019Date of Patent: March 16, 2021Assignee: RENESAS ELECTRONICS CORPORATIONInventor: Yuji Ishii
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Patent number: 10919997Abstract: The purpose of the present invention is to obtain an ethylene.?-olefin.non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene.?-olefin.non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an ?-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4)125° C. is 5-100, and (4) the B value is 1.20 or more.Type: GrantFiled: February 10, 2015Date of Patent: February 16, 2021Assignee: MITSUI CHEMICALS, INC.Inventors: Koji Endo, Mayumi Hiwara, Sadahiko Matsuura, Yusuke Mizobuchi, Yuichi Yamamura, Yuji Noguchi, Yuji Ishii, Tatsuya Sakai, Keisuke Shishido, Kotaro Ichino, Kiyohide Inomata, Fumito Takeuchi, Kenta Ide
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Publication number: 20200273990Abstract: The n-type body extension region BER is separated from the n+ buried region BL by the p-type impurity region PIR and is in contact with the p-type drift region DFT1. At the end of the n-type body extension region BER closest to the p+ drain region DC, the first portion FP of the n-type body extension region BER located closest to the second surface SS is located closer to the p+ drain region DC than the second portion SP of the n-type body extension region BER located at the first surface FS, and is located closer to the second surface SS than the bottom surface BS of the element isolation insulating film SIS.Type: ApplicationFiled: February 6, 2020Publication date: August 27, 2020Inventor: Yuji ISHII
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Publication number: 20200193172Abstract: An off-road vehicle that travels on the off-road ground includes: a sensor group configured to detect unevenness of the ground; a camera configured to capture the unevenness of the ground; a ground unevenness degree calculation unit configured to calculate a ground unevenness degree indicating an unevenness degree of the ground based on an input parameter; an input parameter setting unit configured to set, as the input parameter, data selected from among data detected by the sensor group and image data captured by the camera; an unevenness-position data generation unit configured to associate the actual vehicle position with the ground unevenness degree to generate ground unevenness-position data; and a data storage unit configured to store the ground unevenness-position data.Type: ApplicationFiled: February 20, 2020Publication date: June 18, 2020Inventors: Kazuyoshi Kawamoto, Akira Tominaga, Yuji Ishii
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Patent number: 10607091Abstract: An off-road vehicle that travels on the off-road ground includes: a sensor group configured to detect unevenness of the ground; a camera configured to capture the unevenness of the ground; a ground unevenness degree calculation unit configured to calculate a ground unevenness degree indicating an unevenness degree of the ground based on an input parameter; an input parameter setting unit configured to set, as the input parameter, data selected from among data detected by the sensor group and image data captured by the camera; an unevenness-position data generation unit configured to associate the actual vehicle position with the ground unevenness degree to generate ground unevenness-position data; and a data storage unit configured to store the ground unevenness-position data.Type: GrantFiled: December 8, 2017Date of Patent: March 31, 2020Assignee: Kubota CorporationInventors: Kazuyoshi Kawamoto, Akira Tominaga, Yuji Ishii
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Patent number: 10570572Abstract: A railroad rail track pad composition including a particular ethylene·?-olefin·non-conjugated polyene random copolymer (A), clay (B), and a sulfur atom-containing silane coupling agent (C) is used in order to lower the viscosity of a rubber composition that is a raw material for molding while suppressing lowering of the rubber elasticity of a crosslinked and molded product to be obtained. In addition, a molded product obtained by crosslinking the composition, particularly a molded product obtained by crosslinking and foam-molding the composition, is provided with rubber elasticity that is suitable as a railroad rail track pad.Type: GrantFiled: March 11, 2016Date of Patent: February 25, 2020Assignee: MITSUI CHEMICALS, INC.Inventors: Tatsuya Sakai, Yuji Ishii, Kiyohide Inomata, Kotaro Ichino
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Publication number: 20190326434Abstract: A method of manufacturing a semiconductor device of one embodiment includes the steps of: forming a drift region in a first surface of a semiconductor substrate; forming a body region having a first portion disposed in the first surface, and a second portion disposed in the first surface so as to surround the first portion and the drift region; forming a hard mask, having an opening over the drift region, in the first surface; forming a reverse conductivity region in the first surface by ion implantation using the hard mask; forming a trench in the first surface by anisotropic etching using the hard mask; and embedding an isolation film in the trench. The ion implantation is performed obliquely to the first surface such that ions are implanted below a first edge part, which is located on a first portion side of the opening, of the hard mask.Type: ApplicationFiled: April 4, 2019Publication date: October 24, 2019Inventors: Hiroaki SEKIKAWA, Takahiro MORI, Yuji ISHII
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Publication number: 20190259749Abstract: Provided are a semiconductor device capable of preventing erroneous operation and providing a field plate effect, and a method of manufacturing the semiconductor device. In a diode, a gate electrode, a p+ source region, and an n-type body region are electrically coupled to one another. A contact region is disposed between the n-type body region and the p+ source region in a first surface of a semiconductor substrate.Type: ApplicationFiled: January 15, 2019Publication date: August 22, 2019Inventor: Yuji ISHII
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Publication number: 20180314900Abstract: An off-road vehicle that travels on the off-road ground includes: a sensor group configured to detect unevenness of the ground; a camera configured to capture the unevenness of the ground; a ground unevenness degree calculation unit configured to calculate a ground unevenness degree indicating an unevenness degree of the ground based on an input parameter; an input parameter setting unit configured to set, as the input parameter, data selected from among data detected by the sensor group and image data captured by the camera; an unevenness-position data generation unit configured to associate the actual vehicle position with the ground unevenness degree to generate ground unevenness-position data; and a data storage unit configured to store the ground unevenness-position data.Type: ApplicationFiled: December 8, 2017Publication date: November 1, 2018Inventors: Kazuyoshi Kawamoto, Akira Tominaga, Yuji Ishii
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Patent number: 9963568Abstract: [Object] To provide an excellent foaming agent which does not have problems in handling and operation (example: risk of explosion or fire) and inhibition of cross-linking resulting from a foaming agent and problems, such as, mold pollution and environmental pollution, caused by a foaming agent residue, which has excellent uniform dispersibility in a subject of foaming, and which can be used as an alternative to the chemical decomposition type foaming agent. [Solution] A foaming agent formed from at least (A) a high molecular weight compound having a saturated water absorption of 10 to 1,000 g/g in ion-exchanged water (25° C.) and (B) water, wherein a storage modulus (G?) of the agent, determined on the basis of a viscoelasticity measurement at a temperature of 20° C., is 8.0×101 to 1.0×106 Pa at a frequency of 5 rad/s.Type: GrantFiled: June 30, 2017Date of Patent: May 8, 2018Assignee: MITSUI CHEMICALS, INC.Inventors: Ryo Nakatsuji, Hiroki Ebata, Yuji Ishii, Kiyohide Inomata
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Publication number: 20180066402Abstract: A railroad rail track pad composition including a particular ethylene•?-olefin•non-conjugated polyene random copolymer (A), clay (B), and a sulfur atom-containing silane coupling agent (C) is used in order to lower the viscosity of a rubber composition that is a raw material for molding while suppressing lowering of the rubber elasticity of a crosslinked and molded product to be obtained. In addition, a molded product obtained by crosslinking the composition, particularly a molded product obtained by crosslinking and foam-molding the composition, is provided with rubber elasticity that is suitable as a railroad rail track pad.Type: ApplicationFiled: March 11, 2016Publication date: March 8, 2018Applicant: Mitsui Chemicals, Inc.Inventors: Tatsuya SAKAI, Yuji ISHII, Kiyohide INOMATA, Kotaro ICHINO
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Publication number: 20170298203Abstract: [Object] To provide an excellent foaming agent which does not have problems in handling and operation (example: risk of explosion or fire) and inhibition of cross-linking resulting from a foaming agent and problems, such as, mold pollution and environmental pollution, caused by a foaming agent residue, which has excellent uniform dispersibility in a subject of foaming, and which can be used as an alternative to the chemical decomposition type foaming agent. [Solution] A foaming agent formed from at least (A) a high molecular weight compound having a saturated water absorption of 10 to 1,000 g/g in ion-exchanged water (25° C.) and (B) water, wherein a storage modulus (G?) of the agent, determined on the basis of a viscoelasticity measurement at a temperature of 20° C., is 8.0×101 to 1.0×106 Pa at a frequency of 5 rad/s.Type: ApplicationFiled: June 30, 2017Publication date: October 19, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Ryo NAKATSUJI, Hiroki EBATA, Yuji ISHII, Kiyohide INOMATA
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Publication number: 20170283556Abstract: The present invention relates to a polyamide-based thermoplastic elastomer composition [Y] in which a rubber composition [X] and a phenol resin-based crosslinking agent [IV] are dynamically crosslinked, the rubber composition [X] comprising a polyamide [I] including 30 to 100% by mole of a terephthalic acid structural unit and having a melting point of 220 to 290° C.; an ethylene-?-olefin-unconjugated polyene copolymer rubber [II] including structural units of ethylene, an ?-olefin having 3 to 20 carbon atoms and an unconjugated polyene, respectively; and an olefin-based polymer [III] including 0.3 to 5.0% by mass of a functional group structural unit, (the total of [I] to [IV]: 100% by mass).Type: ApplicationFiled: December 5, 2014Publication date: October 5, 2017Applicant: Mitsui Chemicals, Inc.Inventors: Hiroki EBATA, Tatsuya ENOMOTO, Isao WASHIO, Fumio KAGEYAMA, Atsushi TAKEISHI, Yuji ISHII, Akinori AMANO
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Publication number: 20170148427Abstract: The present invention provides a sound insulator which includes: a flexible material (A) having a peak of loss tangent (tan ?), which is determined by dynamic viscoelasticity measurement, in a temperature range of ?60° C. to lower than 0° C.; and a resin (B) having a peak of loss tangent (tan ?), which is determined by dynamic viscoelasticity measurement, in a temperature range of 0° C. to 60° C., the sound insulator including the resin (B) at a ratio of 1 to 50 parts by mass with respect to 100 parts by mass of the flexible material (A). The sound insulator of the present invention is a material which realizes excellent sound insulation properties without relying on a complex shape and an increase in weight.Type: ApplicationFiled: March 18, 2015Publication date: May 25, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Fumito TAKEUCHI, Yuji ISHII, Mitsunao ARINO, Ryo NAKATSUJI, Kiyohide INOMATA, Tatsuya SAKAI
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Publication number: 20160347894Abstract: The purpose of the present invention is to obtain an ethylene•?-olefin•non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene•?-olefin•non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an ?-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4)125° C. is 5-100, and (4) the B value is 1.20 or more.Type: ApplicationFiled: February 10, 2015Publication date: December 1, 2016Applicant: MITSUI CHEMICALS, INC.Inventors: Koji ENDO, Mayumi HIWARA, Sadahiko MATSUURA, Yusuke MIZOBUCHI, Yuichi YAMAMURA, Yuji NOGUCHI, Yuji ISHII, Tatsuya SAKAI, Keisuke SHISHIDO, Kotaro ICHINO, Kiyohide INOMATA, Fumito TAKEUCHI, Kenta IDE
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Patent number: 9344199Abstract: An optical receiver receives coherent light. The optical receiver includes an amplitude adjuster, a signal processor, and a controller. The amplitude adjuster adjusts amplitude of an input signal to output an analog signal. The signal processor receives a digital signal generated from the analog signal output from the amplitude adjuster, extracts clock components from the digital signal, and after establishing synchronization between the clock components and data components, extracts the data components from the digital signal to process the data components. The controller sets amplitude of the analog signal to first amplitude before establishment of synchronization by the digital signal, and changes the set amplitude to second amplitude that is smaller than the first amplitude after the establishment of synchronization.Type: GrantFiled: July 28, 2014Date of Patent: May 17, 2016Assignee: FUJITSU OPTICAL COMPONENTS LIMITEDInventors: Kenichi Kawazoe, Yuji Ishii, Tamotsu Akashi, Koji Terada
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Patent number: 9335350Abstract: An electronic device includes: a detection circuit to detect a voltage difference between both ends of a wiring portion which is at least a portion of a power supply wiring that connects a power supply circuit and a receiver circuit; a current supply circuit to supply a pilot current having a first current value which is smaller than a second current value of a main current to the power supply wiring; and a control circuit to control supply of the pilot current and stop of the supply of the pilot current, to calculate a wiring resistance value of the wiring portion based on a first value of the voltage difference when the supply is stopped, a second value of the voltage difference when the pilot current is supplied, and the first current value and to calculate the second current value based on the first value and the wiring resistance value.Type: GrantFiled: June 13, 2014Date of Patent: May 10, 2016Assignee: FUJITSU LIMITEDInventors: Hiroshi Onimaru, Yuji Ishii, Kenji Rikimaru, Kenichi Kawazoe, Hiroshi Adachi
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Patent number: 9109065Abstract: Objects of the invention are to obtain ethylene copolymers which have excellent rubber elasticity even without being crosslinked and maintain sufficient shaping processability even when filled with significantly large amounts of additives, and to provide methods for producing with good productivity films or sheets having flexibility and high stretchability. The invention is directed to an ethylene copolymer (X) including structural units derived from a component [A], a component [B] and a component [C] which are ethylene [A], an ?-olefin of 3 to 20 carbon atoms [B] and a polyene and/or a cyclic olefin [C]. In the ethylene copolymer, (1) the content of structural units derived from the ethylene [A] is in the range of 50 to 90 mol % in 100 mol % of all the structural units in the copolymer (X); (2) the content of structural units derived from at least one polyene and/or the cyclic olefin [C] is in the range of 1.0 to 5.Type: GrantFiled: October 12, 2012Date of Patent: August 18, 2015Assignee: MITSUI CHEMICALS, INC.Inventors: Hiroki Ebata, Yoshiharu Kikuchi, Yuji Ishii, Yoshihisa Matsuo