Patents by Inventor Keita Kobayashi

Keita Kobayashi 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: 20240080590
    Abstract: Photoelectric conversion apparatus includes read circuit for reading signals of pixel array, and signal processing unit for generating pixel signal by performing CDS on signals read by the read circuit and performing shading correction on the pixel signal. The read circuit has function of reading signal of the pixel array with first and second gain. The read circuit reads noise level with the first gain and reads optical signal level with the first or second gain from selected effective pixel for the correlated double sampling. In the shading correction, pixel signal of effective pixel from which optical signal level has been read with the first gain is corrected based on first correction value, and pixel signal of effective pixel from which optical signal level has been read with the second gain is corrected based on second correction value.
    Type: Application
    Filed: August 22, 2023
    Publication date: March 7, 2024
    Inventors: TAKESHI SHIMADA, KEISUKE TAKAHASHI, KEITA MASUDA, HIDEO KOBAYASHI
  • Publication number: 20240026221
    Abstract: An europium activating ?-type sialon phosphor contains at least one kind of element selected from the group made of yttrium, titanium, and gadolinium, wherein the total content of the at least one kind of element is more than 0 ppm and less than 1000 ppm.
    Type: Application
    Filed: September 6, 2021
    Publication date: January 25, 2024
    Applicant: Denka Company Limited
    Inventors: Noriyoshi SAKAI, Ryousuke KONDO, Tomohiro NOMIYAMA, Keita KOBAYASHI
  • Publication number: 20240002719
    Abstract: Phosphor particles are composed of one or two selected from a powdery phosphor formed of CASN and SCASN, wherein a particle size corresponding to a cumulative 50% is Dx50 and to a cumulative 90% is Dx90 in a volume-based integrated fraction of the phosphor particles, and where a particle size corresponding to a cumulative 50% is Dy50 and to a cumulative 90% is Dy90 after subjecting the particles to treatment, (a) Dx50 is between 0.5 ?m and 35 ?m, and (b) Dx90/Dy90 is between 0.7 and 15. The treatment; a dispersion liquid wherein 30 mg of the particles are uniformly dispersed in an aqueous solution of sodium hexametaphosphate having a concentration of 0.2% and put into a cylindrical container A vibrator part of an ultrasonic homogenizer is inserted and the liquid is irradiated with ultrasonic waves at a frequency of 19.5 kHz and an output of 150 W for 3 minutes.
    Type: Application
    Filed: November 4, 2021
    Publication date: January 4, 2024
    Applicant: DENKA COMPANY LIMITED
    Inventors: Shunsuke MITANI, Keita KOBAYASHI
  • Publication number: 20230279289
    Abstract: Phosphor particles for producing a wavelength conversion member of a projector, including ?-type sialon. A cured sheet having a film thickness of 50±5 ?m produced by using the particle satisfies the following optical characteristics: when an intensity at a peak wavelength of blue light emitted from a blue LED having a peak wavelength between 450 to 460 nm is defined as Ii [W/nm], and in a case where the blue light is emitted to one surface side of the cured sheet, when an intensity of light emitted from the other surface side of the cured sheet at a peak wavelength between 450 to 460 nm is defined as It [W/nm] and an intensity thereof at a peak wavelength between 500 to 560 nm is defined as Ip [W/nm], It/Ii is equal to or less than 0.50 and Ip/Ii is equal to or more than 0.03.
    Type: Application
    Filed: July 9, 2021
    Publication date: September 7, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Shunsuke MITANI, Keita KOBAYASHI
  • Patent number: 11702592
    Abstract: A ?-sialon phosphor that is a solid solution of europium, in which D50 is 7.0 ?m or more and 20.0 ?m or less and (D50?D10)/D50 is 0.60 or less, where D50 is a 50% area diameter of primary particles of the ?-sialon phosphor, and D10 is a 10% area diameter of the primary particles of the ?-sialon phosphor. Primary particles are defined as single-crystal particles distinguished for each crystal orientation by identifying the crystal orientation of individual particles of the ?-sialon phosphor by an electron backscatter diffraction image method. D50 and D10 are obtained by image analysis of the cross-sectional area of the primary particles.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: July 18, 2023
    Assignee: DENKA COMPANY LIMITED
    Inventors: Manabu Kobayashi, Keita Kobayashi, Tomohiro Nomiyama, Shintaro Watanabe
  • Publication number: 20230104278
    Abstract: A phosphor particle for a micro LED or a mini LED, consisting of CASN and/or SCASN. A cured sheet produced by the following sheet producing procedure using this phosphor particle satisfies the following optical characteristics. <Sheet Producing Procedure> (1) 40 parts by mass of the phosphor particle and 60 parts by mass of a silicone resin OE-6630 manufactured by Dow Corning Toray Co., Ltd. are subjected to a stirring treatment and a defoaming treatment using a rotation and revolution mixer to obtain a uniform mixture. (2) The mixture obtained in the section (1) is added dropwise to a first transparent fluororesin film, and a second transparent fluororesin film is further laminated on the dropped material to obtain a sheet-like material. This sheet-like material is molded into an uncured sheet using a roller having a gap in which 50 ?m is added to a total thickness of the first fluororesin film and the second fluororesin film.
    Type: Application
    Filed: March 15, 2021
    Publication date: April 6, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Shunsuke MITANI, Keita KOBAYASHI
  • Patent number: 11434421
    Abstract: A phosphor which has a main crystal phase having the same crystal structure as that of CaAlSiN3, wherein the phosphor satisfies conditions of a span value (d90?d10)/d50 of 1.70 or less and a d50 of 10.0 ?m or less, as represented with d10, d50, and d90 on a volume frequency measured according to a laser diffraction method; wherein the d10, d50, and d90 on a volume frequency in a particle distribution measured are each a measured by loading 0.5 g of a phosphor into 100 ml of a solution of 0.05% by weight of sodium hexametaphosphate mixed in ion exchange water, and subjecting the resultant to a dispersing treatment for 3 minutes with an ultrasonic homogenizer at an oscillation frequency of 19.5±1 kHz, a chip size of 20?, and an amplitude of vibration of 32±2 ?m, with a chip placed at a central portion.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: September 6, 2022
    Assignee: DENKA COMPANY LIMITED
    Inventors: Kazuya Sugita, Yusuke Takeda, Keita Kobayashi, Akihisa Kajiyama
  • Publication number: 20220239796
    Abstract: According to one aspect of the present disclosure, an electronic device is configured to take multiple power states including first and second power states, the electronic device comprising: a first controller controlling a power state of the electronic device; and a second controller connected to the first controller via a serial communication line and a single signal line, wherein the first controller controls the power state of the electronic device into: the first power state in response to a first command being input via the serial communication line; the second power state in response to a second command being input via the serial communication line; the first power state in response to a first pattern signal being input from the signal line; and the second power state in response to a second pattern signal being input from the signal line.
    Type: Application
    Filed: January 5, 2022
    Publication date: July 28, 2022
    Inventor: Keita Kobayashi
  • Patent number: 11377594
    Abstract: A ?-type sialon phosphor represented by the following expression 1, in which D50 is 10 ?m or less, and values of D10, D50, and D90 satisfy a relationship of the following expression 2 with respect to D10, D50, and D90 (each unit is [?m]) on a volume frequency basis as measured according to a laser diffraction/scattering method. Expression 1: Si12-aAlaObN16-b:Eux (wherein 0<a?3; 0<b?3; 0<x?0.1), expression 2: (D90?D10)/D50<1.6 (wherein the D10, D50, and D90 (each unit is [?m]) on a volume frequency basis as measured according to the laser diffraction/scattering method.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: July 5, 2022
    Assignee: DENKA COMPANY LIMITED
    Inventors: Keita Kobayashi, Shunsuke Mitani, Ryousuke Kondo, Kazuya Sugita, Takuya Matsufuji, Akihisa Kajiyama
  • Patent number: 11312902
    Abstract: The present invention provides a method for easily and simply producing a zinc oxide phosphor that has a high level of safety and a high emission intensity and is useful for, for example, cosmetic applications. The present invention also provides a zinc oxide phosphor having such excellent physical properties and a cosmetic product containing the same. Provided is a method for producing a zinc oxide phosphor, including: a raw material mixing step of mixing an oxygen-containing zinc compound and a sulfur-containing compound; and a firing step of firing the raw material mixture obtained in the raw material mixing step, the firing step including firing in a reducing atmosphere followed by firing in an oxygen-containing atmosphere.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: April 26, 2022
    Assignee: Sakai Chemical Industry Co., Ltd.
    Inventors: Momoko Ishikawa, Keita Kobayashi, Nanae Ogata, Kenji Mori, Tomonori Tojo
  • Patent number: 11305637
    Abstract: A vehicle cooling system includes a circulation flow path section which has a first flow path section and a second flow path section, and a solenoid valve which can switch between an open state in which the first flow path section and the second flow path section are connected and a closed state in which the first flow path section and the second flow path section are blocked. The circulation flow path section includes a valve body accommodating section configured to include a first accommodating section and a second accommodating section which connects the first flow path section and the second flow path section in the open state, and a connection flow path section whose one end is connected to the first flow path section. The other end of the connection flow path section opens to the first accommodating section.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: April 19, 2022
    Assignees: SUBARU CORPORATION, NIDEC TOSOK CORPORATION
    Inventors: Naoki Hiraoka, Tomoya Ozawa, Takashi Asai, Daisuke Murata, Keita Kobayashi, Tomohiro Yasuda, Kenro Takahashi
  • Publication number: 20220010205
    Abstract: A ?-sialon phosphor that is a solid solution of europium, in which D50 is 7.0 ?m or more and 20.0 ?m or less and (D50?D10)/D50 is 0.60 or less, where D50 is a 50% area diameter of primary particles of the ?-sialon phosphor, and D10 is a 10% area diameter of the primary particles of the ?-sialon phosphor. Primary particles are defined as single-crystal particles distinguished for each crystal orientation by identifying the crystal orientation of individual particles of the ?-sialon phosphor by an electron backscatter diffraction image method. D50 and D10 are obtained by image analysis of the cross-sectional area of the primary particles.
    Type: Application
    Filed: November 7, 2019
    Publication date: January 13, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Manabu KOBAYASHI, Keita KOBAYASHI, Tomohiro NOMIYAMA, Shintaro WATANABE
  • Publication number: 20210395459
    Abstract: The present invention provides a resin composition which has excellent handleability and which provides a cured product having excellent toughness and heat resistance. The present invention relates to a thermosetting resin composition including an allyl compound (A) containing at least two or more allyl groups and one or more benzene rings in a molecule, a maleimide compound (B) containing at least two or more maleimide groups in a molecule, a thiol compound (C) containing at least two or more thiol groups in a molecule, and a cyclic compound (D) containing at least two or more hydroxyl groups in a molecule.
    Type: Application
    Filed: October 30, 2018
    Publication date: December 23, 2021
    Inventors: Hiromi KIDA, Atsushi MIYATA, Shinji IKESHITA, Keita KOBAYASHI
  • Publication number: 20210324267
    Abstract: A phosphor which has a main crystal phase having the same crystal structure as that of CaAlSiN3, wherein the phosphor satisfies conditions of a span value (d90?d10)/d50 of 1.70 or less and a d50 of 10.0 ?m or less, as represented with d10, d50, and d90 on a volume frequency measured according to a laser diffraction method; wherein the d10, d50, and d90 on a volume frequency in a particle distribution measured are each a measured by loading 0.5 g of a phosphor into 100 ml of a solution of 0.05% by weight of sodium hexametaphosphate mixed in ion exchange water, and subjecting the resultant to a dispersing treatment for 3 minutes with an ultrasonic homogenizer at an oscillation frequency of 19.5±1 kHz, a chip size of 20?, and an amplitude of vibration of 32±2 ?m, with a chip placed at a central portion.
    Type: Application
    Filed: August 22, 2019
    Publication date: October 21, 2021
    Applicant: DENKA COMPANY LIMITED
    Inventors: Kazuya SUGITA, Yusuke TAKEDA, Keita KOBAYASHI, Akihisa KAJIYAMA
  • Publication number: 20210189234
    Abstract: A ?-type sialon phosphor represented by the following expression 1, in which D50 is 10 ?m or less, and values of D10, D50, and D90 satisfy a relationship of the following expression 2 with respect to D10, D50, and D90 (each unit is [?m]) on a volume frequency basis as measured according to a laser diffraction/scattering method. Expression 1: Si12-aAlaObN16-b:Eux (wherein 0<a?3; 0<b?3; 0<x?0.1), expression 2: (D90?D10)/D50<1.6 (wherein the D10, D50, and D90 (each unit is [?m]) on a volume frequency basis as measured according to the laser diffraction/scattering method.
    Type: Application
    Filed: August 22, 2019
    Publication date: June 24, 2021
    Applicant: DENKA COMPANY LIMITED
    Inventors: Keita KOBAYASHI, Shunsuke MITANI, Ryousuke KONDO, Kazuya SUGITA, Takuya MATSUFUJI, Akihisa KAJIYAMA
  • Publication number: 20200308482
    Abstract: The present invention provides a method for easily and simply producing a zinc oxide phosphor that has a high level of safety and a high emission intensity and is useful for, for example, cosmetic applications. The present invention also provides a zinc oxide phosphor having such excellent physical properties and a cosmetic product containing the same. Provided is a method for producing a zinc oxide phosphor, including: a raw material mixing step of mixing an oxygen-containing zinc compound and a sulfur-containing compound; and a firing step of firing the raw material mixture obtained in the raw material mixing step, the firing step including firing in a reducing atmosphere followed by firing in an oxygen-containing atmosphere.
    Type: Application
    Filed: June 30, 2017
    Publication date: October 1, 2020
    Applicant: Sakai Chemical Industry Co., Ltd.
    Inventors: Momoko ISHIKAWA, Keita KOBAYASHI, Nanae OGATA, Kenji MORI, Tomonori TOJO
  • Patent number: 10630859
    Abstract: An image forming apparatus includes a temperature detecting unit configured to detect a temperature outside the image forming apparatus, a storage portion, and a control unit configured to execute a dew condensation eliminating operation for eliminating dew condensation in the image forming apparatus based on a detection result of the temperature detecting unit. The control unit stores, in the storage portion, an execution time of the dew condensation eliminating operation executed when a power supply to the image forming apparatus is stopped during the dew condensation eliminating operation and determines, when the power supply to the image forming apparatus is started, whether or not to execute the dew condensation eliminating operation based on the execution time and a power supply stop continuing time from when the power supply is stopped to when the power supply is started.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: April 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Keita Kobayashi
  • Patent number: 10621772
    Abstract: A first region including an input first word and having a first background color and a second region including a second word decided independently of the first word and having a second background color are collided with each other on a screen, and a third region in which the two collided regions fuse with each other is displayed. At the same time, the first word and the second word are displayed as if they were continuous words in the third region. This is displayed as a moving image with a continuous motion.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: April 14, 2020
    Assignee: HONDA MOTOR CO., LTD
    Inventors: Masaki Ueyama, Yusuke Okutani, Ryosuke Sakuma, Yamato Honda, Keita Kobayashi
  • Publication number: 20200021709
    Abstract: An image forming apparatus including: a temperature detecting unit configured to detect a temperature outside the image forming apparatus; a storage portion; and a control unit configured to execute a dew condensation eliminating operation for eliminating dew condensation in the image forming apparatus based on a detection result of the temperature detecting unit, wherein the control unit stores, in the storage portion, an execution time of the dew condensation eliminating operation executed when a power supply to the image forming apparatus is stopped during the dew condensation eliminating operation and determines, when the power supply to the image forming apparatus is started, whether or not to execute the dew condensation eliminating operation based on the execution time and a power supply stop continuing time from when the power supply is stopped to when the power supply is started.
    Type: Application
    Filed: July 9, 2019
    Publication date: January 16, 2020
    Inventor: Keita Kobayashi
  • Publication number: 20190391846
    Abstract: The semiconductor integrated circuit includes a plurality of CPUs (big CPU and LITTLE CPU). Each of CPUs has a different performance respectively. The semiconductor integrated circuit determines an effective CPU allocated to a task realized by at least one of the plurality of functional blocks according to the device table defining a relationship between the plurality of functional blocks and any one of the plurality of CPUs.
    Type: Application
    Filed: May 14, 2019
    Publication date: December 26, 2019
    Inventors: Keita KOBAYASHI, Takahiko GOMI, Ryu NAGASAWA