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).

  • Publication number: 20200313045
    Abstract: 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: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Kenji ASAI, Kazushige FUJIO
  • Publication number: 20200135987
    Abstract: 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: Application
    Filed: January 2, 2020
    Publication date: April 30, 2020
    Applicant: NICHIA CORPORATION
    Inventor: Kenji ASAI
  • Patent number: 10559725
    Abstract: 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: Grant
    Filed: October 22, 2018
    Date of Patent: February 11, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Kenji Asai
  • Publication number: 20190371972
    Abstract: 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: Application
    Filed: May 29, 2019
    Publication date: December 5, 2019
    Applicant: NICHIA CORPORATION
    Inventors: Kenji ASAI, Kazushige FUJIO
  • Publication number: 20190285168
    Abstract: 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: Application
    Filed: March 15, 2019
    Publication date: September 19, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Akihiko IKEDA, Masataka SUGIYAMA, Tomoaki SUZUKI, Hiroshi KATO, Satoshi MIYANAGA, Kenji ASAI
  • Publication number: 20190264808
    Abstract: 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: Application
    Filed: February 28, 2019
    Publication date: August 29, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masataka SUGIYAMA, Kenji TANABE, Takeshi KUWAHARA, Ryoki II, Kenji ASAI
  • Publication number: 20190264807
    Abstract: 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: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroaki KIMURA, Kensuke AKIMOTO, Ryoki II, Kenji ASAI
  • Publication number: 20190181308
    Abstract: 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: Application
    Filed: February 14, 2019
    Publication date: June 13, 2019
    Applicant: NICHIA CORPORATION
    Inventor: Kenji ASAI
  • Patent number: 10256374
    Abstract: 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: Grant
    Filed: February 17, 2017
    Date of Patent: April 9, 2019
    Assignee: NICHIA CORPORATION
    Inventor: Kenji Asai
  • Publication number: 20190067531
    Abstract: 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: Application
    Filed: October 22, 2018
    Publication date: February 28, 2019
    Applicant: NICHIA CORPORATION
    Inventor: Kenji ASAI
  • Patent number: 10141484
    Abstract: 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: Grant
    Filed: May 25, 2017
    Date of Patent: November 27, 2018
    Assignee: NICHIA CORPORATION
    Inventor: Kenji Asai
  • Patent number: 10008643
    Abstract: 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: Grant
    Filed: December 20, 2016
    Date of Patent: June 26, 2018
    Assignee: NICHIA CORPORATION
    Inventor: Kenji Asai
  • Patent number: 10003288
    Abstract: 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: Grant
    Filed: February 2, 2017
    Date of Patent: June 19, 2018
    Assignee: Rohm Co., Ltd.
    Inventors: Hikaru Sasaki, Kenji Asai, Yuki Gohara, Masateru Moroizumi
  • Patent number: 9933066
    Abstract: 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: Grant
    Filed: October 30, 2014
    Date of Patent: April 3, 2018
    Assignees: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Natsuki Sada, Atsushi Teshima, Mitsuki Watanabe, Kenji Asai, Makoto Taniguchi
  • Publication number: 20170345976
    Abstract: 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: Application
    Filed: May 25, 2017
    Publication date: November 30, 2017
    Applicant: NICHIA CORPORATION
    Inventor: Kenji ASAI
  • Publication number: 20170256684
    Abstract: 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: Application
    Filed: February 17, 2017
    Publication date: September 7, 2017
    Applicant: NICHIA CORPORATION
    Inventor: Kenji ASAI
  • Patent number: 9735323
    Abstract: 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: Grant
    Filed: June 29, 2016
    Date of Patent: August 15, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Kenji Asai, Hiroyuki Watanabe, Shoji Hosokawa
  • Publication number: 20170222584
    Abstract: 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: Application
    Filed: February 2, 2017
    Publication date: August 3, 2017
    Inventors: Hikaru SASAKI, Kenji ASAI, Yuki GOHARA, Masateru MOROIZUMI
  • Publication number: 20170179347
    Abstract: 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: Application
    Filed: December 20, 2016
    Publication date: June 22, 2017
    Applicant: NICHIA CORPORATION
    Inventor: Kenji ASAI
  • Publication number: 20170005239
    Abstract: 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: Application
    Filed: June 29, 2016
    Publication date: January 5, 2017
    Applicant: NICHIA CORPORATION
    Inventors: Kenji ASAI, Hiroyuki WATANABE, Shoji HOSOKAWA