Patents by Inventor Yuta YAMAGUCHI

Yuta YAMAGUCHI 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).

  • Patent number: 11365170
    Abstract: An object of the present invention is to provide a non-solvate crystal of eucomic acid having a low methanol content and excellent fluidity, and a method for producing the same. The present invention can provide a non-solvate crystal of eucomic acid having a low methanol content and excellent fluidity by drying a methanol solvate crystal of eucomic acid.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: June 21, 2022
    Assignee: KYOWA HAKKO BIO CO., LTD.
    Inventors: Yuta Yamaguchi, Hiroshi Nagano
  • Patent number: 11362597
    Abstract: The present power control device includes an inverter, a step-up/down converter, a first capacitor, a second capacitor, and a control device. The step-up/down converter includes an upper arm and a lower arm that are switching elements, and a reactor that has a first end and a second end, the first end being connected to the first capacitor, and the second end being connected between the upper arm and the lower arm. The control device is configured to fix the lower arm in an off state and control the upper arm such that the upper arm switches at a predetermined duty ratio.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: June 14, 2022
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Nobukatsu Yamaguchi, Yuta Nakamura, Takami Suzuki
  • Publication number: 20220178986
    Abstract: An information processing apparatus includes a processor configured to: obtain failure information to identify details of a failure which has occurred in a target device on which failure analysis is to be performed; and superimpose and display information related to a part or a wire on a captured image of a printed circuit board included in the target device, the part or the wire being a possible cause for the failure identified by the failure information from multiple parts and wires disposed on the printed circuit board.
    Type: Application
    Filed: May 4, 2021
    Publication date: June 9, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventor: Yuta YAMAGUCHI
  • Publication number: 20220173161
    Abstract: An image display element, provided with a pixel region and a connection region, includes a light-emitting unit and a driving circuit substrate. The light-emitting unit includes a semiconductor layer obtained by layering a second conductive layer, a light-emitting layer, and a first conductive layer, mesa shapes formed by dividing the semiconductor layer, and a step portion separated from the mesa shapes by a groove. A first electrode is connected to the first conductive layer and a first driving electrode. The light-emitting unit further includes, between the mesa shapes adjacent to each other, a wiring line layer forming a conductive path, the wiring line layer being thinner than a layer thickness of a portion of each of the mesa shapes in the semiconductor layer. The wiring line layer extends to a top of the step portion and is connected to a common second electrode provided on the step portion.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Inventors: Yuta IKAWA, Shinji YAMAGUCHI, Osamu JINUSHI, Naoto MOMOTANI, Kyohei MIKAMI
  • Patent number: 11332686
    Abstract: A fluorine-containing ether compound represented by formula (1) shown below. R4—CH2—R3—CH2—R2—CH2—R1—CH2—R2—CH2—R3—CH2—R4??(1) (In formula (1), R1 and R3 represent different perfluoropolyether chains, R2 represents a linking group containing one or more polar groups, and R4 represents a terminal group containing two or more polar groups.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: May 17, 2022
    Assignee: SHOWA DENKO K.K.
    Inventors: Naoya Fukumoto, Yuta Yamaguchi, Naoko Ito, Katsumi Murofushi
  • Patent number: 11292979
    Abstract: A fluorine-containing ether compound represented by a formula (1) shown below. R4—CH2—R3—CH2—R2—CH2—R1—CH2—R2—CH2—R3—CH2—R5??(1) In formula (1), R1 and R3 represent the same or different perfluoropolyether chains, R2 represents a linking group containing at least one polar group, one or both of R4 and R5 represent a terminal group containing two or more polar groups, and R4 and R5 are different.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: April 5, 2022
    Assignee: SHOWA DENKO K.K.
    Inventors: Yuta Yamaguchi, Naoya Fukumoto, Naoko Ito, Hiroyuki Tomita, Ichiro Ota, Katsumi Murofushi
  • Patent number: 11279664
    Abstract: The present invention relates to a fluorine-containing ether compound represented by Formula (1), R1—R2—CH2—R3—CH2—R4??(1). (In Formula (1), R1 is an end group including an organic group having at least one double bond or triple bond, R2 is a divalent linking group bonded to R1 by etheric oxygen, R3 is a perfluoropolyether chain, R4 is an end group having two or three polar groups with each polar group being bonded to different carbon atoms, and the carbon atoms, to which the polar groups are bonded, being bonded to each other via a linking group including carbon atoms to which the polar groups are not bonded.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: March 22, 2022
    Assignee: SHOWA DENKO K.K.
    Inventors: Daisuke Yagyu, Yuta Yamaguchi, Naoya Fukumoto, Tsuyoshi Kato, Shoko Uetake, Hiroyuki Tomita, Ryuuta Miyasaka, Naoko Ito, Ichiro Ota, Katsumi Murofushi
  • Patent number: 11225624
    Abstract: A fluorine-containing ether compound represented by Formula (1) is provided, R1—R2—CH2—R3—CH2—R4??(1) (In Formula (1), R1 is an alkyl group that may have a substituent, R2 is a divalent linking group bonded to R1 via an ethereal oxygen, R3 is a perfluoropolyether chain, and R4 is an end group which is different from R1-R2 and includes two or three polar groups, in which each of the polar groups is bonded to a different carbon atom, and the carbon atoms bonded to the polar groups are bonded to each other via a linking group containing a carbon atom not bonded to the polar groups.).
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: January 18, 2022
    Assignee: SHOWA DENKO K.K.
    Inventors: Tsuyoshi Kato, Daisuke Yagyu, Naoya Fukumoto, Yuta Yamaguchi
  • Patent number: 11220649
    Abstract: A fluorine-containing ether compound represented by Formula (1) is provided; R1—R2—CH2—R3—CH2—R4—R5??(1) (In Formula (1), R1 and R5 may be the same as or different from each other and each represents an alkenyl group having 2 to 8 carbon atoms or an alkynyl group having 3 to 8 carbon atoms, R2 and R4 may be the same as or different from each other and each represents a divalent linking group having a polar group, and R3 represents a perfluoropolyether chain, with a proviso that R1 and R2 are, and R4 and R5 are divided due to the presence of an atom other than the carbon atom such as an oxygen atom).
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: January 11, 2022
    Assignee: SHOWA DENKO K.K.
    Inventors: Naoya Fukumoto, Daisuke Yagyu, Yuta Yamaguchi, Shoko Uetake, Tsuyoshi Kato, Hiroyuki Tomita, Ryuuta Miyasaka, Katsumi Murofushi
  • Patent number: 11180457
    Abstract: Provided is a fluorine-containing ether compound capable of forming a lubricant layer having excellent wear resistance even when the thickness is thin, and suitable as a material of a lubricant for a magnetic recording medium. The fluorine-containing ether compound is a compound represented by the following formula (1): R1—R2—CH2—R3—CH2—R4—R5; wherein R3 is a perfluoropolyether chain; R1 is a terminal group bonded to R2; R5 is a terminal group bonded to R4; R1 is an alkenyl group or an alkynyl group; R5 is a group containing a heterocyclic ring; R2 is represented by the following formula (2); R4 is represented by the following formula (3); and a in the formula (2) and b in the formula (3) are each independently an integer of 1 to 3.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: November 23, 2021
    Assignee: SHOWA DENKO K. K.
    Inventors: Tsuyoshi Kato, Daisuke Yagyu, Naoya Fukumoto, Yuta Yamaguchi, Masumi Kuritani, Katsumi Murofushi, Masaki Nanko, Hiroyuki Tomita
  • Publication number: 20210340457
    Abstract: A fluorine-containing ether compound represented by formula (1) shown below. R4—CH2—R3—CH2—R2—CH2—R1—CH2—R2—CH2—R3—CH2—R4??(1) (In formula (1), R1 and R3 represent different perfluoropolyether chains, R2 represents a linking group containing one or more polar groups, and R4 represents a terminal group containing two or more polar groups.
    Type: Application
    Filed: November 24, 2017
    Publication date: November 4, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Naoya FUKUMOTO, Yuta YAMAGUCHI, Naoko ITO, Katsumi MUROFUSHI
  • Publication number: 20210221764
    Abstract: An object of the present invention is to provide a non-solvate crystal of eucomic acid having a low methanol content and excellent fluidity, and a method for producing the same. The present invention can provide a non-solvate crystal of eucomic acid having a low methanol content and excellent fluidity by drying a methanol solvate crystal of eucomic acid.
    Type: Application
    Filed: July 12, 2019
    Publication date: July 22, 2021
    Applicant: KYOWA HAKKO BIO CO., LTD.
    Inventors: Yuta YAMAGUCHI, Hiroshi NAGANO
  • Publication number: 20210188766
    Abstract: Provided is a fluorine-containing ether compound that can be suitably used as a material for a lubricant for a magnetic recording medium, capable of forming a lubricant layer having excellent chemical substance resistance and wear resistance even when the thickness is small. A fluorine-containing ether compound represented by the following formula (1): R1—R2—CH2—R3—CH2—R4—R5??(1) In the formula (1), R3 is a perfluoropolyether chain. R2 and R4 are divalent linkage groups having a polar group, and may be the same or different. R1 and R5 are terminal groups bonded to R2 or R4, which may be the same or different, and at least one of R1 and R5 is an organic group having 1 to 8 carbon atoms wherein one or more hydrogen atoms of the organic group is substituted with a cyano group.
    Type: Application
    Filed: July 30, 2018
    Publication date: June 24, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Masaki NANKO, Naoya FUKUMOTO, Daisuke YAGYU, Yuta YAMAGUCHI, Tsuyoshi KATO, Hiroyuki TOMITA, Katsumi MUROFUSHI, Shohei NISHIZAWA
  • Patent number: 11011200
    Abstract: This fluorine-containing ether compound is represented by Formula (1). R1—R2—CH2—R3—CH2—R4—R5??(1) (in Formula (1), R1 is an aryl group or an aralkyl group, R2 is a divalent linking group having 0 or 1 polar group, R3 is a perfluoropolyether chain, R4 is a divalent linking group having 2 or 3 polar groups, and R5 is an aryl group or an aralkyl group.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: May 18, 2021
    Assignee: SHOWA DENKO K.K.
    Inventors: Shoko Uetake, Naoya Fukumoto, Daisuke Yagyu, Yuta Yamaguchi, Naoko Ito, Hiroyuki Tomita, Ryuta Miyasaka, Katsumi Murofushi
  • Patent number: 10944883
    Abstract: An image forming apparatus includes an executing unit configured to, if there is a shortage of storage capacity for image information necessary to perform image formation, execute the image formation at a reduced image quality below a required image quality, and an informing unit configured to inform that image formation has been executed at a reduced image quality, and inform an effective measure to enable image formation that does not involve a reduction in image quality, the effective measure including at least one of making a setting change to storage capacity allocation and increasing storage capacity.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: March 9, 2021
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Satoshi Watanabe, Yuta Yamaguchi, Tomoaki Hirano, Yusaku Kurihara, Masao Yamada, Takahiko Suzuki
  • Publication number: 20210062101
    Abstract: A fluorine-containing ether compound represented by Formula (1) is provided, R1-R2—CH2—R3—CH2—R4??(1) (In Formula (1), R1 is an alkyl group that may have a substituent, R2 is a divalent linking group bonded to R1 via an ethereal oxygen, R3 is a perfluoropolyether chain, and R4 is an end group which is different from R1-R2 and includes two or three polar groups, in which each of the polar groups is bonded to a different carbon atom, and the carbon atoms bonded to the polar groups are bonded to each other via a linking group containing a carbon atom not bonded to the polar groups.).
    Type: Application
    Filed: August 7, 2018
    Publication date: March 4, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Tsuyoshi KATO, Daisuke YAGYU, Naoya FUKUMOTO, Yuta YAMAGUCHI
  • Patent number: 10801685
    Abstract: Provided is a light source apparatus detecting, even when a minute crack occurs in a fluorescent material plate, such a defect to take a safety measure. The light source apparatus includes a laser light source emitting laser light, a fluorescent material plate including a laser light irradiation region and being capable of emitting light by irradiating the laser light irradiation region with laser light to convert the light in wavelength, a light scanning mechanism capable of scanning the laser light irradiation region with the laser light, and a transparent conductive film pattern disposed on the fluorescent material plate in the laser light irradiation region and including a parallel wiring portion in a first direction. The interval between adjacent portions of the transparent conductive film pattern in a second direction intersecting the first direction changes along the second direction depending on a portion which is located within the pattern.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: October 13, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Yuta Yamaguchi
  • Patent number: 10803898
    Abstract: A fluorine-containing ether compound of the present invention is represented by Formula (1). R1—CH2—R2—CH2—R3??(1) (In Formula (1), R1 is an organic end group having 3 or more carbon atoms which includes two or more polar groups with each polar group being bonded to different carbon atoms and the carbon atoms to which the polar groups are bonded being bonded to each other via a linking group including the carbon atoms which are not bonded to the polar groups, R2 includes a perfluoropolyether chain represented by Formula (3), and R3 is a hydroxyl group or R1) —(CF2)y?1—O—((CF2)yO)z—(CF2)y?1—??(3) (In Formula (3), y represents an integer of 2 to 4, and z represents an integer of 1 to 30).
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: October 13, 2020
    Assignee: SHOWA DENKO K.K.
    Inventors: Naoya Fukumoto, Daisuke Yagyu, Yuta Yamaguchi, Shoko Uetake, Tsuyoshi Kato, Hiroyuki Tomita, Ryuta Miyasaka, Katsumi Murofushi
  • Publication number: 20200283392
    Abstract: Provided is a fluorine-containing ether compound capable of forming a lubricant layer having excellent wear resistance even when the thickness is thin, and suitable as a material of a lubricant for a magnetic recording medium. The fluorine-containing ether compound is a compound represented by the following formula (1): R1—R2—CH2—R3—CH2—R4—R5; wherein R3 is a perfluoropolyether chain; R1 is a terminal group bonded to R2; R5 is a terminal group bonded to R4; R1 is an alkenyl group or an alkynyl group; R5 is a group containing a heterocyclic ring; R2 is represented by the following formula (2); R4 is represented by the following formula (3); and a in the formula (2) and b in the formula (3) are each independently an integer of 1 to 3.
    Type: Application
    Filed: August 28, 2018
    Publication date: September 10, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Tsuyoshi KATO, Daisuke YAGYU, Naoya FUKUMOTO, Yuta YAMAGUCHI, Masumi KURITANI, Katsumi MUROFUSHI, Masaki NANko, Hiroyuki TOMITA
  • Publication number: 20200263104
    Abstract: A fluorine-containing ether compound represented by a formula (1) shown below. R4—CH2—R3—CH2—R2—CH2—R1—CH2—R2—CH2—R3—CH2—R5??(1) In formula (1), R1 and R3 represent the same or different perfluoropolyether chains, R2 represents a linking group containing at least one polar group, one or both of R4 and R5 represent a terminal group containing two or more polar groups, and R4 and R5 are different.
    Type: Application
    Filed: February 20, 2017
    Publication date: August 20, 2020
    Inventors: Yuta YAMAGUCHI, Naoya FUKUMOTO, Naoko ITO, Hiroyuki TOMITA, Ichiro OTA, Katsumi MUROFUSHI