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: 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
  • Patent number: 10724705
    Abstract: A light source apparatus includes: a laser light source; a fluorescent material plate including a laser beam irradiation region and being capable of emitting light generated by irradiating the laser beam irradiation region with a laser beam; a light scanning mechanism capable of scanning the laser beam irradiation region with the laser beam; a first transparent conductive film pattern disposed on the fluorescent material plate in the laser beam irradiation region; a second transparent conductive film pattern disposed on the fluorescent material plate outside the laser beam irradiation region and connected to the first transparent conductive film pattern to constitute a continuous series connection wiring; and an electric circuit electrically connected to the second transparent conductive film pattern, detect a change in a resistance value of the series connection wiring, and function to stop the driving of the laser light source when the resistance value falls outside a predetermined range.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: July 28, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Yuta Yamaguchi
  • Patent number: 10598236
    Abstract: A laminated shim for a disc brake includes base and cover shim plates. The base shim plate includes a base side substrate portion, and a base side locking piece extending in a lamination direction of the base shim plate and the cover shim plate. The cover shim plate includes a cover side substrate portion which is laminated on the base side substrate portion, and a cover side locking piece which extends from the cover side substrate portion in an extension direction of the base side locking piece and is radially overlapped with the base side locking piece. A circumferential end portion of one of the base side locking piece and the cover side locking piece abuts against a movement restricting surface facing a circumferential direction and provided at one of the base side substrate portion and the cover side substrate portion.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: March 24, 2020
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Isao Tamaoki, Yuta Yamaguchi
  • Publication number: 20200010619
    Abstract: A fluorine-containing ether compound of the present invention is represented by the following General Formula (1). (In the General Formula (1), X is a trivalent atom or a trivalent atom group, A is a linking group including at least one polar group, B is a linking group having a perfluoropolyether chain, and D is a polar group or a substituent having a polar group at the end.) [Chem.
    Type: Application
    Filed: February 6, 2018
    Publication date: January 9, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Takuya MINAMI, Yoshishige OKUNO, Yuta YAMAGUCHI, Ryuuta MIYASAKA, Naoya FUKUMOTO, Hiroko HATTORI, Hiroyuki TOMITA, Michio SERI, Naoko ITO, Ichiro OTA, Katsumi MUROFUSHI
  • Publication number: 20190390831
    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: Application
    Filed: June 21, 2019
    Publication date: December 26, 2019
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventor: Yuta YAMAGUCHI
  • Publication number: 20190390838
    Abstract: A light source apparatus includes: a laser light source; a fluorescent material plate including a laser beam irradiation region and being capable of emitting light generated by irradiating the laser beam irradiation region with a laser beam; a light scanning mechanism capable of scanning the laser beam irradiation region with the laser beam; a first transparent conductive film pattern disposed on the fluorescent material plate in the laser beam irradiation region; a second transparent conductive film pattern disposed on the fluorescent material plate outside the laser beam irradiation region and connected to the first transparent conductive film pattern to constitute a continuous series connection wiring; and an electric circuit electrically connected to the second transparent conductive film pattern, detect a change in a resistance value of the series connection wiring, and function to stop the driving of the laser light source when the resistance value falls outside a predetermined range.
    Type: Application
    Filed: June 24, 2019
    Publication date: December 26, 2019
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventor: Yuta YAMAGUCHI
  • Publication number: 20190382675
    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: Application
    Filed: December 4, 2017
    Publication date: December 19, 2019
    Applicant: SHOWA DENKO K.K.
    Inventors: Naoya FUKUMOTO, Daisuke YAGYU, Yuta YAMAGUCHI, Shoko UETAKE, Tsuyoshi KATO, Hiroyuki TOMITA, Ryuuta MIYASAKA, Katsumi MUROFUSHI
  • Publication number: 20190382676
    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 each represents a group having a heterocyclic ring and may be the same as or different from each other, R2 and R4 each represents a divalent linking group having a polar group and play be the same as or different from each other, and R3 represents a perfluoropolyether chain.
    Type: Application
    Filed: January 5, 2018
    Publication date: December 19, 2019
    Applicant: SHOWA DENKO K.K.
    Inventors: Yuta YAMAGUCHI, Daisuke YAGYU, Naoya FUKUMOTO, Shoko UETAKE, Tsuyoshi KATO, Hiroyuki TOMITA, Ryuuta MIYASAKA, Katsumi MUROFUSHI
  • Patent number: 10437537
    Abstract: A data processing device includes a feature specification unit that analyzes document data indicating a print target document to specify a feature of the print target document, an acquiring unit that acquires feature data indicating a feature of at least one document specified by analyzing each document and setting data indicating a print setting corresponding to each document, from a storage device, a selection unit that compares the specified feature of the print target document with the features indicated by the feature data of the documents acquired by the acquiring unit and that selects setting data used for printing of the print target document among the acquired setting data based on a comparison result, and a print instructing unit that instructs a printing device to print the print target document in accordance with the selected setting data.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: October 8, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kenki Matsui, Yuta Yamaguchi