Patents by Inventor Daisuke Yagyu

Daisuke Yagyu 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: 20190224199
    Abstract: The present invention provides an agent containing an orotic acid derivative that has high solubility in solvent and has superior physiological activity. The agent of the present invention is a melanin production inhibitor, whitening agent, fibroblast activator, collagen and/or elastin production promoter or wrinkle ameliorant containing as an active ingredient thereof an orotic acid derivative represented by the following general formula (1) or a salt thereof. In formula (1), R preferably represents a side chain of glutamic acid, glycine, histidine or aspartic acid. [In formula (1), R represents a side chain of a naturally-occurring amino acid and R may form, together with a nitrogen atom adjacent thereto through a single carbon atom, a hetero ring.
    Type: Application
    Filed: June 8, 2017
    Publication date: July 25, 2019
    Applicant: SHOWA DENKO K.K.
    Inventors: Daisuke YAGYU, Yuko NAKAGAMI, Ryota NIIBAYASHI, Eiko KATO
  • Publication number: 20190228358
    Abstract: A schedule proposal system includes a data server for storing information collected at a plurality of stations and related to passengers and a computing server storing a program for predicting the numbers of passengers who wait for trains and a program for determining an increase or reduction in the number of trains to be operated. The computing server executes, at predetermined time intervals, the program for predicting the numbers of passengers who wait for trains and the program for determining an increase or reduction in the number of trains to be operated. The program for predicting the numbers of passengers who wait for trains predicts, based on the information related to passengers, the numbers of passengers who wait for trains at the plurality of stations in a predetermined time zone.
    Type: Application
    Filed: November 8, 2016
    Publication date: July 25, 2019
    Inventors: Rieko OOTSUKA, Noriharu AMIYA, Hiroaki KOIWA, Daisuke YAGYU, Hiroko SUKEDA, Yuuichi SATOU, Kouichirou KUROKAWA, Alfredo DRAGO
  • Publication number: 20190084911
    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: Application
    Filed: January 30, 2017
    Publication date: March 21, 2019
    Applicant: 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
  • Publication number: 20180334474
    Abstract: The present invention provides a nicotinamide mononucleotide derivative, or salt thereof, which is a compound represented by general formula (1) (wherein, R1 and R2 respectively and independently represent a hydrogen atom or acyl group having 3 to 30 carbon atoms, the hydrocarbon group bound to the carbonyl carbon of the acyl group is a linear or branched, saturated or unsaturated hydrocarbon group, and at least one of R1 and R2 is the acyl group).
    Type: Application
    Filed: November 16, 2016
    Publication date: November 22, 2018
    Applicant: SHOWA DENKO K.K.
    Inventor: Daisuke YAGYU
  • Patent number: 10112890
    Abstract: Provided is a compound represented by Formula (1) or a salt thereof (in the formula, R1 and R2 each independently represent a hydrogen atom or a linear or branched acyl group having 11 to 30 carbon atoms, a hydrocarbon group bonded to a carbonyl carbon of the acyl group is a saturated or unsaturated hydrocarbon group, and at least one of R1 and R2 represents the acyl group).
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: October 30, 2018
    Assignee: SHOWA DENKO K.K.
    Inventors: Toru Tachibana, Ryota Niibayashi, Daisuke Yagyu
  • Publication number: 20180047419
    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: Application
    Filed: July 31, 2017
    Publication date: February 15, 2018
    Applicant: SHOWA DENKO K.K.
    Inventors: Naoya FUKUMOTO, Daisuke YAGYU, Yuta YAMAGUCHI, Shoko UETAKE, Tsuyoshi KATO, Hiroyuki TOMITA, Ryuta MIYASAKA, Katsumi MUROFUSHI
  • Publication number: 20180009773
    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: Application
    Filed: July 3, 2017
    Publication date: January 11, 2018
    Applicant: SHOWA DENKO K.K.
    Inventors: Shoko UETAKE, Naoya FUKUMOTO, Daisuke YAGYU, Yuta YAMAGUCHI, Naoko ITO, Hiroyuki TOMITA, Ryuta MIYASAKA, Katsumi MUROFUSHI
  • Publication number: 20170369425
    Abstract: Provided is a compound represented by Formula (1) or a salt thereof (in the formula, R1 and R2 each independently represent a hydrogen atom or a linear or branched acyl group having 11 to 30 carbon atoms, a hydrocarbon group bonded to a carbonyl carbon of the acyl group is a saturated or unsaturated hydrocarbon group, and at least one of R1 and R2 represents the acyl group).
    Type: Application
    Filed: January 15, 2016
    Publication date: December 28, 2017
    Applicant: SHOWA DENKO K.K.
    Inventors: Toru TACHIBANA, Ryota NIIBAYASHI, Daisuke YAGYU
  • Patent number: 9051399
    Abstract: The present invention relates to a method of producing a polymer in the method for producing a copolymer of olefin and a polar group-containing monomer represented by formula (1): C(R1)2?C(R1)(C(R1)2)nR2??(1) (in the formula, the symbols have the same meanings as described in the description), the method comprising using a complex of a metal in Group 10 of the periodic table as a catalyst; and supplying a catalyst solution separated from a polymer after the polymerization reaction to a polymerization reaction system to recycle and re-use the catalyst. The production method of the present invention can dramatically reduce the catalyst cost.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: June 9, 2015
    Assignees: SHOWA DENKO K.K., THE UNIVERSITY OF TOKYO
    Inventors: Yoshikuni Okumura, Daisuke Yagyu
  • Publication number: 20130165607
    Abstract: The present invention relates to a method of producing a polymer in the method for producing a copolymer of olefin and a polar group-containing monomer represented by formula (1): C(R1)2?C(R1)(C(R1)2)nR2??(1) (in the formula, the symbols have the same meanings as described in the description), the method comprising using a complex of a metal in Group 10 of the periodic table as a catalyst; and supplying a catalyst solution separated from a polymer after the polymerization reaction to a polymerization reaction system to recycle and re-use the catalyst. The production method of the present invention can dramatically reduce the catalyst cost.
    Type: Application
    Filed: July 1, 2011
    Publication date: June 27, 2013
    Applicant: SHOWA DENKO K.K.
    Inventors: Yoshikuni Okumura, Daisuke Yagyu