Patents by Inventor Kenji Asai
Kenji Asai 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: 20200313045Abstract: A light emitting device includes a first light source containing a first light emitting element, and a second light source containing a second light emitting element and a second fluorescent material, the first light source emits light in a region that is demarcated in a chromaticity diagram of the CIE 1931 color coordinate system by a first straight line connecting a first point having x,y of 0.280,0.070 in the chromaticity coordinate and a second point having x,y of 0.280,0.500 in the chromaticity coordinate, a second straight line connecting the second point and a third point having x,y of 0.013,0.Type: ApplicationFiled: March 27, 2020Publication date: October 1, 2020Applicant: NICHIA CORPORATIONInventors: Kenji ASAI, Kazushige FUJIO
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Publication number: 20200135987Abstract: A light emitting device includes a light emitting element having a peak emission wavelength of 410 nm to 440 nm and a phosphor member. The phosphor member includes a first phosphor having a peak emission wavelength of 430 nm to 500 nm and containing an alkaline-earth phosphate, a second phosphor having a peak emission wavelength of 440 nm to 550 nm and containing at least one of an alkaline-earth aluminate and a silicate containing Ca, Mg, and Cl, a third phosphor having a peak emission wavelength of 500 nm to 600 nm and containing a rare-earth aluminate, a fourth phosphor having a peak emission wavelength of 610 nm to 650 nm and containing a silicon nitride containing Al and at least one of Sr and Ca, and a fifth phosphor having a peak emission wavelength of 650 nm to 670 nm and containing a fluorogermanate.Type: ApplicationFiled: January 2, 2020Publication date: April 30, 2020Applicant: NICHIA CORPORATIONInventor: Kenji ASAI
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Patent number: 10559725Abstract: A light emitting device includes a light emitting element having a peak emission wavelength of 410 nm to 440 nm and a phosphor member. The phosphor member includes a first phosphor having a peak emission wavelength of 430 nm to 500 nm and containing an alkaline-earth phosphate, a second phosphor having a peak emission wavelength of 440 nm to 550 nm and containing at least one of an alkaline-earth aluminate and a silicate containing Ca, Mg, and Cl, a third phosphor having a peak emission wavelength of 500 nm to 600 nm and containing a rare-earth aluminate, a fourth phosphor having a peak emission wavelength of 610 nm to 650 nm and containing a silicon nitride containing Al and at least one of Sr and Ca, and a fifth phosphor having a peak emission wavelength of 650 nm to 670 nm and containing a fluorogermanate.Type: GrantFiled: October 22, 2018Date of Patent: February 11, 2020Assignee: NICHIA CORPORATIONInventor: Kenji Asai
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Publication number: 20190371972Abstract: A light emitting device includes: a light emitting element having an emission peak wavelength in a range of 430 nm to 470 nm; and a fluorescent member including a fluorescent material that is excited by light from the light emitting element for light emission, wherein a mixture of light from the light emitting element and light from the fluorescent material has a correlated color temperature in a range of 1500 K to 11000 K, as measured according to JIS Z8725, the color deviation duv that is a deviation from the black body radiation track on the CIE1931 chromaticity diagram of the mixture of light and is measured according to JIS Z8725 falls within a range of more than 0 to 0.Type: ApplicationFiled: May 29, 2019Publication date: December 5, 2019Applicant: NICHIA CORPORATIONInventors: Kenji ASAI, Kazushige FUJIO
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Publication number: 20190285168Abstract: In a power transmitting system of a vehicle including a differential gear device including a differential shaft; a first oil pump; a first oil strainer connected to the first oil pump; a second oil pump; a second oil strainer connected to the second oil pump; and a casing within which the engine drive shaft, the differential gear device, the first and second oil pumps, and the first and second oil strainers are accommodated, such that the engine drive shaft and the differential shaft of the differential gear device are spaced apart from each other in a longitudinal direction of the vehicle, the first and the second oil strainers are disposed between the engine drive shaft and the differential shaft of the differential gear device in the longitudinal direction of the vehicle, and are spaced apart from each other in an axial direction of the engine drive shaft.Type: ApplicationFiled: March 15, 2019Publication date: September 19, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.Inventors: Akihiko IKEDA, Masataka SUGIYAMA, Tomoaki SUZUKI, Hiroshi KATO, Satoshi MIYANAGA, Kenji ASAI
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Publication number: 20190264808Abstract: A parking lock mechanism comprises: a parking gear disposed on a power transmission member mechanically coupled to a drive wheel; and a parking pawl provided with a lock claw configured to mesh with the parking gear and switching between a lock state in which the lock claw is meshed with the parking gear and an unlock state in which meshing between the lock claw and the parking gear is released. In the mechanism, the lock claw includes a first end surface and a second end surface opposite to each other in a face width direction, the lock claw includes a tooth tip surface provided with a retreated portion at a corner on the second end surface side, and a position of a center of gravity of the parking pawl is on the second end surface side relative to a center plane in the face width direction of the lock claw.Type: ApplicationFiled: February 28, 2019Publication date: August 29, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masataka SUGIYAMA, Kenji TANABE, Takeshi KUWAHARA, Ryoki II, Kenji ASAI
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Publication number: 20190264807Abstract: A parking device includes a parking gear, a parking pawl, and a torsion spring. The parking gear is directly coupled to an axle. The parking pawl is pivotably supported by a fulcrum pin and provided with a claw configured to be able to mesh with a tooth space of the parking gear. The torsion spring is fitted on the fulcrum pin, with a first end of the torsion spring mounted on the parking pawl and a second end of the torsion spring mounted on a holding member that holds the fulcrum pin.Type: ApplicationFiled: February 22, 2019Publication date: August 29, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroaki KIMURA, Kensuke AKIMOTO, Ryoki II, Kenji ASAI
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Publication number: 20190181308Abstract: A light emitting device that is capable of achieving excellent color rendering property is provided. The light emitting device contains a light emitting element having a light emission peak wavelength within a range of 430 nm or more and 470 nm or less, and a fluorescent member. The fluorescent member contains a first fluorescent material that contains an Eu-activated alkaline earth aluminate, a second fluorescent material that contains a Mn-activated fluorogermanate, a third fluorescent material that contains a Ce-activated rare earth aluminate, and a fourth fluorescent material that contains an Eu-activated silicon nitride having Al and at least one of Sr and Ca.Type: ApplicationFiled: February 14, 2019Publication date: June 13, 2019Applicant: NICHIA CORPORATIONInventor: Kenji ASAI
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Patent number: 10256374Abstract: A light emitting device that is capable of achieving excellent color rendering property is provided. The light emitting device contains a light emitting element having a light emission peak wavelength within a range of 430 nm or more and 470 nm or less, and a fluorescent member. The fluorescent member contains a first fluorescent material that contains an Eu-activated alkaline earth aluminate, a second fluorescent material that contains a Mn-activated fluorogermanate, a third fluorescent material that contains a Ce-activated rare earth aluminate, and a fourth fluorescent material that contains an Eu-activated silicon nitride having Al and at least one of Sr and Ca.Type: GrantFiled: February 17, 2017Date of Patent: April 9, 2019Assignee: NICHIA CORPORATIONInventor: Kenji Asai
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Publication number: 20190067531Abstract: A light emitting device includes a light emitting element having a peak emission wavelength of 410 nm to 440 nm and a phosphor member. The phosphor member includes a first phosphor having a peak emission wavelength of 430 nm to 500 nm and containing an alkaline-earth phosphate, a second phosphor having a peak emission wavelength of 440 nm to 550 nm and containing at least one of an alkaline-earth aluminate and a silicate containing Ca, Mg, and Cl, a third phosphor having a peak emission wavelength of 500 nm to 600 nm and containing a rare-earth aluminate, a fourth phosphor having a peak emission wavelength of 610 nm to 650 nm and containing a silicon nitride containing Al and at least one of Sr and Ca, and a fifth phosphor having a peak emission wavelength of 650 nm to 670 nm and containing a fluorogermanate.Type: ApplicationFiled: October 22, 2018Publication date: February 28, 2019Applicant: NICHIA CORPORATIONInventor: Kenji ASAI
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Patent number: 10141484Abstract: A light emitting device includes a light emitting element having a peak emission wavelength of 410 nm to 440 nm and a phosphor member. The phosphor member includes a first phosphor having a peak emission wavelength of 430 nm to 500 nm and containing an alkaline-earth phosphate, a second phosphor having a peak emission wavelength of 440 nm to 550 nm and containing at least one of an alkaline-earth aluminate and a silicate containing Ca, Mg, and Cl, a third phosphor having a peak emission wavelength of 500 nm to 600 nm and containing a rare-earth aluminate, a fourth phosphor having a peak emission wavelength of 610 nm to 650 nm and containing a silicon nitride containing Al and at least one of Sr and Ca, and a fifth phosphor having a peak emission wavelength of 650 nm to 670 nm and containing a fluorogermanate.Type: GrantFiled: May 25, 2017Date of Patent: November 27, 2018Assignee: NICHIA CORPORATIONInventor: Kenji Asai
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Patent number: 10008643Abstract: A light emitting device comprises a light emitting element having an emission peak wavelength in a wavelength range of 430 nm to 470 nm, and a phosphor material comprising at least one type of phosphor selected from the group consisting of a first phosphor and a second phosphor, a third phosphor, a fourth phosphor, and a fifth phosphor having respective compositions represented by formulas (I)-(V): (x?s)MgO.(s/2)Sc2O3.yMgF2.uCaF2.(1?t)GeO2.(t/2)Mt2O3:zMn4+??(I) A2[M1?pF6]:pMn4+??(II) Lu3Al5O12:Ce??(III) (Sr,Ca)AlSiN3:Eu??(IV) (Ca,Sr,Ba)8MgSi4O16(F,Cl,Br)2:Eu??(V) In the formulas (I)-(V), Mt is at least one of Al, Ga, and In; x, y, z, s, t, and u each satisfy 2?x?4, 0<y<1.5, 0<z<0.05, 0?s?0.5, 0<t<0.5, and 0?u<1.5; A is at least one of K, Li, Na, Rb, Cs, and NH4; M is at least one type of element from group 4 elements and group 14 elements; and p satisfies 0<p<0.2.Type: GrantFiled: December 20, 2016Date of Patent: June 26, 2018Assignee: NICHIA CORPORATIONInventor: Kenji Asai
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Patent number: 10003288Abstract: A control circuit for a motor, includes: a plurality of m number of analog ports to each of which a detection signal indicating an electrical state of the motor is input, m being an integer of 2 or more; an A/D converter including a multiplexer to receive detection signals of the m number of analog ports and being configured to convert a detection signal selected by the multiplexer into digital data; a processor to generate a drive command of the motor based on the digital data; a pulse width modulator to perform pulse width modulation to generate a PWM signal based on the drive command; and an interface circuit to be triggered by at least one internal signal generated in the control circuit to control an operation of the A/D converter according to a control command from the processor and deliver the digital data to the processor.Type: GrantFiled: February 2, 2017Date of Patent: June 19, 2018Assignee: Rohm Co., Ltd.Inventors: Hikaru Sasaki, Kenji Asai, Yuki Gohara, Masateru Moroizumi
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Patent number: 9933066Abstract: A vehicle drive transfer apparatus including a planetary gear mechanism including a carrier for supporting a sun gear, a ring gear, and a plurality of pinion gears through pinion shafts and pinion bearings, wherein an in-shaft oil passage is provided in each of the pinion shafts to supply lubricating oil to each of the pinion bearings; and an oil receiver attached to the carrier to receive lubricating oil supplied from an oil supplier and lead the lubricating oil to the in-shaft oil passage in each of the pinion shafts.Type: GrantFiled: October 30, 2014Date of Patent: April 3, 2018Assignees: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Natsuki Sada, Atsushi Teshima, Mitsuki Watanabe, Kenji Asai, Makoto Taniguchi
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Publication number: 20170345976Abstract: A light emitting device includes a light emitting element having a peak emission wavelength of 410 nm to 440nm and a phosphor member. The phosphor member includes a first phosphor having a peak emission wavelength of 430 nm to 500 nm and containing an alkaline-earth phosphate, a second phosphor having a peak emission wavelength of 440 nm to 550 nm and containing at least one of an alkaline-earth aluminate and a silicate containing Ca, Mg, and Cl, a third phosphor having a peak emission wavelength of 500 nm to 600 nm and containing a rare-earth aluminate, a fourth phosphor having a peak emission wavelength of 610 nm to 650 nm and containing a silicon nitride containing Al and at least one of Sr and Ca, and a fifth phosphor having a peak emission wavelength of 650 nm to 670 nm and containing a fluorogermanate.Type: ApplicationFiled: May 25, 2017Publication date: November 30, 2017Applicant: NICHIA CORPORATIONInventor: Kenji ASAI
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Publication number: 20170256684Abstract: A light emitting device that is capable of achieving excellent color rendering property is provided. The light emitting device contains a light emitting element having a light emission peak wavelength within a range of 430 nm or more and 470 nm or less, and a fluorescent member. The fluorescent member contains a first fluorescent material that contains an Eu-activated alkaline earth aluminate, a second fluorescent material that contains a Mn-activated fluorogermanate, a third fluorescent material that contains a Ce-activated rare earth aluminate, and a fourth fluorescent material that contains an Eu-activated silicon nitride having Al and at least one of Sr and Ca.Type: ApplicationFiled: February 17, 2017Publication date: September 7, 2017Applicant: NICHIA CORPORATIONInventor: Kenji ASAI
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Patent number: 9735323Abstract: A light emitting device includes a light emitting element of a peak emission wavelength in a range of 430 nm to 470 nm and a fluorescent member. The fluorescent member includes a first phosphor including a silicate having a composition that contains at least one element selected from the group consisting of Ca, Sr, and Ba, at least one element selected from the group consisting of Cl, F, and Br, and Mg and Eu, a second phosphor including an aluminate that has a composition containing Lu and Ce, and a third phosphor having emission spectrum with a half bandwidth of 86 nm or less and including a silicon nitride that has a composition containing at least one of Sr or Ca, and containing Al and Eu.Type: GrantFiled: June 29, 2016Date of Patent: August 15, 2017Assignee: NICHIA CORPORATIONInventors: Kenji Asai, Hiroyuki Watanabe, Shoji Hosokawa
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Publication number: 20170222584Abstract: A control circuit for a motor, includes: a plurality of m number of analog ports to each of which a detection signal indicating an electrical state of the motor is input, m being an integer of 2 or more; an A/D converter including a multiplexer to receive detection signals of the m number of analog ports and being configured to convert a detection signal selected by the multiplexer into digital data; a processor to generate a drive command of the motor based on the digital data; a pulse width modulator to perform pulse width modulation to generate a PWM signal based on the drive command; and an interface circuit to be triggered by at least one internal signal generated in the control circuit to control an operation of the A/D converter according to a control command from the processor and deliver the digital data to the processor.Type: ApplicationFiled: February 2, 2017Publication date: August 3, 2017Inventors: Hikaru SASAKI, Kenji ASAI, Yuki GOHARA, Masateru MOROIZUMI
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Publication number: 20170179347Abstract: A light emitting device comprises a light emitting element having an emission peak wavelength in a wavelength range of 430 nm to 470 nm, and a phosphor material comprising at least one type of phosphor selected from the group consisting of a first phosphor and a second phosphor, a third phosphor, a fourth phosphor, and a fifth phosphor having respective compositions represented by formulas (I)-(V): (x?s)MgO.(s/2)Sc2O3.yMgF2.uCaF2.(1?t)GeO2.(t/2)Mt2O3:zMn4+??(I) A2[M1-pF6]:pMn4+??(II) Lu3Al5O12:Ce??(III) (Sr,Ca)8AlSiN3:Eu??(IV) (Ca,Sr,Ba)8MgSi4O16(F,Cl,Br)2:Eu??(V) In the formulas (I)-(V), Mt is at least one of Al, Ga, and In; x, y, z, s, t, and u each satisfy 2?x?4, 0<y<1.5, 0<z<0.05, 0?s?0.5, 0<t<0.5, and 0?u<1.5; A is at least one of K, Li, Na, Rb, Cs, and NH4; M is at least one type of element from group 4 elements and group 14 elements; and p satisfies 0<p<0.2.Type: ApplicationFiled: December 20, 2016Publication date: June 22, 2017Applicant: NICHIA CORPORATIONInventor: Kenji ASAI
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Publication number: 20170005239Abstract: A light emitting device includes a light emitting element of a peak emission wavelength in a range of 430 nm to 470 nm and a fluorescent member. The fluorescent member includes a first phosphor including a silicate having a composition that contains at least one element selected from the group consisting of Ca, Sr, and Ba, at least one element selected from the group consisting of Cl, F, and Br, and Mg and Eu, a second phosphor including an aluminate that has a composition containing Lu and Ce, and a third phosphor having emission spectrum with a half bandwidth of 86 nm or less and including a silicon nitride that has a composition containing at least one of Sr or Ca, and containing Al and Eu.Type: ApplicationFiled: June 29, 2016Publication date: January 5, 2017Applicant: NICHIA CORPORATIONInventors: Kenji ASAI, Hiroyuki WATANABE, Shoji HOSOKAWA