Patents by Inventor Shigeyuki Harada

Shigeyuki Harada 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: 20200148713
    Abstract: A raw material for vapor deposition for producing a platinum thin film or a platinum compound thin film by a vapor deposition method. The raw material for vapor deposition includes an organoplatinum compound represented by the following formula, in which a cyclopentene-amine ligand and an alkyl ligand are coordinated to divalent platinum. The organoplatinum compound of the present invention has moderate thermal stability and can respond flexibly to severe film formation conditions, including a wider film formation area, higher throughput, and the like. (In the formula, R1, R2, and R3 are each any one of a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an amino group, an imino group, a cyano group, and an isocyano group, each having 4 or less carbon atoms, and R4 and R5 are each an alkyl group having 1 or more and 3 or less carbon atoms.
    Type: Application
    Filed: July 12, 2018
    Publication date: May 14, 2020
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Ryosuke HARADA, Shigeyuki OOTAKE, Toshiyuki SHIGETOMI, Kazuharu SUZUKI
  • Patent number: 10633549
    Abstract: An ink includes water; a coloring material, and a polymer including a structure unit represented by the following Chemical formula 1 and a structure unit represented by the following Chemical formula 2 or the following Chemical formula 3, where R and T each, independently represent hydrogen atoms or methyl groups, L and N each, independently represent single bonds or carbonyl groups, M and Q each, independently represent naphthyl groups or biphenyl groups, p represents an integer of from 2 to 12, and q represents an integer of from 1 to 3.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: April 28, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Shigeyuki Harada, Takuya Yamazaki
  • Publication number: 20190276694
    Abstract: An ink comprises water, a coloring material, and a cross-linked material comprising a structure unit represented by the following Chemical formula 1 and a structure unit represented by the following Chemical formula 2, in Chemical formula 1, X represents a hydrogen atom or a cation and R1 represents a hydrogen atom or a methyl group, in Chemical formula 2, R2 represents a hydrogen atom or a methyl group, L represents an alkylene group having 2 to 18 carbon atoms, and * represents an atomic bond.
    Type: Application
    Filed: March 5, 2019
    Publication date: September 12, 2019
    Inventors: Takuya YAMAZAKI, Shigeyuki HARADA, Takuya SAIGA, Hiroshi GOTOU, Yuusuke KOIZUKA, Koichiro OYAMA
  • Publication number: 20190264050
    Abstract: An ink includes water; a coloring material, and a polymer including a structure unit represented by the following Chemical formula 1 and a structure unit represented by the following Chemical formula 2 or the following Chemical formula 3, where R and T each, independently represent hydrogen atoms or methyl groups, L and N each, independently represent single bonds or carbonyl groups, M and Q each, independently represent naphthyl groups or biphenyl groups, p represents an integer of from 2 to 12, and q represents an integer of from 1 to 3.
    Type: Application
    Filed: December 12, 2018
    Publication date: August 29, 2019
    Inventors: Shigeyuki HARADA, Takuya Yamazaki
  • Patent number: 10370548
    Abstract: A copolymer including a structural unit represented by General Formula (1) below, and a structural unit represented by General Formula (2) below, where, in General Formula (1), R1 is a hydrogen atom or a methyl group, L1 is an alkylene group having 2 or greater carbon atoms but 5 or less carbon atoms, and X is a hydrogen atom or a cation, where, in General Formula (2), R2 is a hydrogen atom or a methyl group and L2 is an alkylene group having 2 or greater carbon atoms but 18 or less carbon atoms.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: August 6, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Shigeyuki Harada, Akihiko Matsuyama, Yoshiki Yanagawa, Masayuki Fukuoka, Takuya Yamazaki, Kazukiyo Nagai, Yuusuke Koizuka, Tomoyuki Shimada, Akiyoshi Sabu
  • Publication number: 20190136076
    Abstract: Ink includes water, a coloring material, and a copolymer including a first structure unit represented by the following Chemical formula 1 and a second structure unit including an anionic group. In the Chemical formula, R represents a hydrogen atom or a methyl group, X represents an alkylene group having 2-4 carbon atoms, and Y represents a substituted or non-substituted straight-chain alkylene group having 5 to 7 carbon atoms.
    Type: Application
    Filed: January 8, 2019
    Publication date: May 9, 2019
    Inventors: Yuusuke Koizuka, Kazukiyo Nagai, Tomoyuki Shimada, Shigeyuki Harada, Akihiko Matsuyama, Yoshiki Yanagawa, Koichiro Oyama, Takuya Yamazaki, Akiyoshi Sabu
  • Patent number: 10280321
    Abstract: An ink includes a pigment, a wax, a water soluble solvent including a solvent having an SP value of from 9.0 to 11.0, and water, wherein the mass ratio of the content of the wax in the ink to the content of the solvent having an SP value of from 9.0 to 11.0 is in a range of from 1.0:2.5 to 1.0:25.0.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: May 7, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Akihiko Matsuyama, Hiroshi Gotou, Michihiko Namba, Hidetoshi Fujii, Amika Sagara, Kazukiyo Nagai, Tomoyuki Shimada, Shigeyuki Harada, Yoshiki Yanagawa, Akiyoshi Sabu, Yuusuke Koizuka, Masayuki Fukuoka, Takuya Yamazaki
  • Patent number: 10273373
    Abstract: Provided is an ink containing water, a coloring material, and a copolymer, wherein the copolymer contains a structural unit represented by any one of general formulae (1a), (1b), and (1c) below and a structural unit containing an anionic group, where R1 represents a hydrogen atom or a methyl group, a represents an integer of from 6 through 10, and b represents an integer of 0 or 1, where R2 represents a hydrogen atom or a methyl group, c represents an integer of 3 or 4, and d represents an integer of 0 or 1, where R3 represents a hydrogen atom or a methyl group and e represents an integer of from 2 through 10.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: April 30, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuusuke Koizuka, Kazukiyo Nagai, Tomoyuki Shimada, Shigeyuki Harada, Koichiro Oyama, Takuya Yamazaki, Akiyoshi Sabu, Yoshiki Yanagawa, Akihiko Matsuyama
  • Patent number: 10233341
    Abstract: Ink includes water, a coloring material, and a copolymer including a first structure unit represented by the following Chemical formula 1 and a second structure unit including an anionic group. In the Chemical formula, R represents a hydrogen atom or a methyl group, X represents an alkylene group having 2-4 carbon atoms, and Y represents a substituted or non-substituted straight-chain alkylene group having 5 to 7 carbon atoms.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: March 19, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuusuke Koizuka, Kazukiyo Nagai, Tomoyuki Shimada, Shigeyuki Harada, Akihiko Matsuyama, Yoshiki Yanagawa, Koichiro Oyama, Takuya Yamazaki, Akiyoshi Sabu
  • Patent number: 10035869
    Abstract: To provide a copolymer including: a structural unit represented by the following General Formula (1) where X represents a hydrogen atom or a cation; a structural unit expressed by the following Structural Formula (1); and a structural unit represented by the following General Formula (2) where R is a hydrogen atom or a methyl group, L is a single bond or —(CH2)n—O—CO— where n is an integer in a range of from 2 through 18, and a carbonyl carbon atom in the —(CH2)n—O—CO— is bound to naphthyl.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: July 31, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Shigeyuki Harada, Yoshiki Yanagawa, Keita Katoh, Masayuki Fukuoka, Kazukiyo Nagai, Yuusuke Koizuka, Tomoyuki Shimada, Akiyoshi Sabu
  • Patent number: 10000656
    Abstract: An ink includes a pigment a quinacridone compound represented by Chemical formula 1, and a copolymer including the structure unit represented by Chemical formula 2 or Chemical formula 3. In Chemical formula 1, R1, R2, R3, and R4 each, independently represent hydrogen atoms, halogen atoms, or alkyl groups having 1-4 carbon atoms, R5, R6, and R7 each, independently represent alkyl groups having 1-4 carbon atoms or alkylene groups having 1-4 carbon atoms, and m represents 1 or 2, In Chemical formula 2, R8 represents a hydrogen atom or a methyl group and L1 represents an alkylene group having 2-16 carbon atoms, In Chemical formula 3, R9 represents a hydrogen atom or a methyl group, L2 represents a single bond or —(CH2)n—O— and n represents an integer of 2-16.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: June 19, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Yanagawa, Akihiko Matsuyama, Kazukiyo Nagai, Tomoyuki Shimada, Shigeyuki Harada, Akiyoshi Sabu, Yuusuke Koizuka, Koichiro Oyama, Takuya Yamazaki
  • Patent number: 9988543
    Abstract: Provided is an ink containing a copper phthalocyanine pigment, wherein an absorbance ratio (Y/X) of a local minimum absorbance Y of the ink in a wavelength range of from 665 nm through 675 nm to a local maximum absorbance X of the ink in a wavelength range of from 610 nm through 620 nm is 0.660 or greater but 0.740 or less.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: June 5, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Akihiko Matsuyama, Shigeyuki Harada, Yoshiki Yanagawa, Masayuki Fukuoka, Takuya Yamazaki, Kazukiyo Nagai, Tomoyuki Shimada, Akiyoshi Sabu, Yuusuke Koizuka
  • Patent number: 9896530
    Abstract: A copolymer including a structural unit represented by General Formula (1) below and a structural unit represented by General Formula (2) below, where, in General Formula (1), R is a hydrogen atom or a methyl group and X is a hydrogen atom or a cation, where, in General Formula (2), L is an alkylene group having 2 or more but 18 or less carbon atoms.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: February 20, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Shigeyuki Harada, Kazukiyo Nagai, Yuusuke Koizuka, Tomoyuki Shimada, Takuya Yamazaki, Koichiro Oyama, Akiyoshi Sabu, Akihiko Matsuyama, Yoshiki Yanagawa
  • Publication number: 20180002469
    Abstract: To provide a copolymer including: a structural unit represented by the following General Formula (1) where X represents a hydrogen atom or a cation; a structural unit expressed by the following Structural Formula (1); and a structural unit represented by the following General Formula (2) where R is a hydrogen atom or a methyl group, L is a single bond or —(CH2)n—O—CO— where n is an integer in a range of from 2 through 18, and a carbonyl carbon atom in the —(CH2)n—O—CO— is bound to naphthyl.
    Type: Application
    Filed: January 28, 2016
    Publication date: January 4, 2018
    Inventors: Shigeyuki HARADA, Yoshiki YANAGAWA, Keita KATOH, Masayuki FUKUOKA, Kazukiyo NAGAI, Yuusuke KOIZUKA, Tomoyuki SHIMADA, Akiyoshi SABU
  • Publication number: 20180002553
    Abstract: A copolymer including a structural unit represented by General Formula (1) below, and a structural unit represented by General Formula (2) below, where, in General Formula (1), R1 is a hydrogen atom or a methyl group, L1 is an alkylene group having 2 or greater carbon atoms but 5 or less carbon atoms, and X is a hydrogen atom or a cation, where, in General Formula (2), R2 is a hydrogen atom or a methyl group and L2 is an alkylene group having 2 or greater carbon atoms but 18 or less carbon atoms.
    Type: Application
    Filed: September 14, 2017
    Publication date: January 4, 2018
    Inventors: Shigeyuki HARADA, Akihiko MATSUYAMA, Yoshiki YANAGAWA, Masayuki FUKUOKA, Takuya YAMAZAKI, Kazukiyo NAGAI, Yuusuke KOIZUKA, Tomoyuki SHIMADA, Akiyoshi SABU
  • Patent number: 9850335
    Abstract: A copolymer includes a structure unit represented by Chemical Formula I; and a structure unit represented by Chemical Formula II, where R1 and R2 each, independently represent hydrogen atoms or methyl groups, X represents a hydrogen atom or a cation, and L represents an alkylene group having 2 to 18 carbon atoms.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: December 26, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Shigeyuki Harada, Keita Katoh, Masayuki Fukuoka, Kazukiyo Nagai, Yuusuke Koizuka, Tomoyuki Shimada, Yoshiki Yanagawa, Akiyoshi Sabu, Akihiko Matsuyama, Takuya Yamazaki
  • Patent number: 9850391
    Abstract: Provided is an ink including: copolymer including at least one of structural unit of formula (1) and structural unit of formula (2); pigment having acid value of ?15 ?mol/g and represented by formula (3); water; and water-soluble organic solvent. In formula (1), R1 represents hydrogen or methyl group. L1 represents alkylene group including 2-18 carbon atoms. In formula (2), R1 represents hydrogen or methyl group. L2 represents single bond or —(CH2)n-O— of which oxygen is bound with biphenyl. n represents integer of 2 through 18. In formula (3), R1 represents any one of hydrogen, halogen, alkyl group including 1-4 carbon atoms, alkoxy group including 1-4 carbon atoms, hydroxy, nitro, and alkyl substituted or unsubstituted amino group including 1-4 carbon atoms. n represents integer of 1 through 5. When n is a plural number, R1 may be identical or different. R2, R3, and R4 represent alkyl group including 1-4 carbon atoms.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: December 26, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayuki Fukuoka, Shigeyuki Harada, Yoshiki Yanagawa, Takuya Yamazaki, Kazukiyo Nagai, Yuusuke Koizuka, Tomoyuki Shimada, Akiyoshi Sabu, Akihiko Matsuyama
  • Patent number: 9777091
    Abstract: A copolymer includes the structure unit represented by the following Chemical formula 1 and the structure unit represented by the following Chemical formula 2, where R1 and R2 each, independently represent hydrogen atoms or methyl groups, and n represents a value in the range of from 1 to 90, where R3 represents a hydrogen atom or a methyl group and L represents an alkylene group having 2 to 18 carbon atoms.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: October 3, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayuki Fukuoka, Shigeyuki Harada, Yoshiki Yanagawa, Keita Katoh, Kazukiyo Nagai, Yuusuke Koizuka, Tomoyuki Shimada, Akiyoshi Sabu, Takuya Yamazaki, Akihiko Matsuyama
  • Publication number: 20170267884
    Abstract: Provided is an ink containing water, a coloring material, and a copolymer, wherein the copolymer contains a structural unit represented by any one of general formulae (1a), (1b), and (1c) below and a structural unit containing an anionic group, where R1 represents a hydrogen atom or a methyl group, a represents an integer of from 6 through 10, and b represents an integer of 0 or 1, where R2 represents a hydrogen atom or a methyl group, c represents an integer of 3 or 4, and d represents an integer of 0 or 1, where R3 represents a hydrogen atom or a methyl group and e represents an integer of from 2 through 10.
    Type: Application
    Filed: March 9, 2017
    Publication date: September 21, 2017
    Inventors: Yuusuke KOIZUKA, Kazukiyo NAGAI, Tomoyuki SHIMADA, Shigeyuki HARADA, Koichiro OYAMA, Takuya YAMAZAKI, Akiyoshi SABU, Yoshiki YANAGAWA, Akihiko MATSUYAMA
  • Publication number: 20170174918
    Abstract: An ink includes a pigment a quinacridone compound represented by Chemical formula 1, and a copolymer including the structure unit represented by Chemical formula 2 or Chemical formula 3. In Chemical formula 1, R1, R2, R3, and R4 each, independently represent hydrogen atoms, halogen atoms, or alkyl groups having 1-4 carbon atoms, R5, R6, and R7 each, independently represent alkyl groups having 1-4 carbon atoms or alkylene groups having 1-4 carbon atoms, and m represents 1 or 2, In Chemical formula 2, R8 represents a hydrogen atom or a methyl group and L1 represents an alkylene group having 2-16 carbon atoms, In Chemical formula 3, R9 represents a hydrogen atom or a methyl group, L2 represents a single bond or —(CH2)n—O— and n represents an integer of 2-16.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 22, 2017
    Inventors: Yoshiki YANAGAWA, Akihiko MATSUYAMA, Kazukiyo NAGAI, Tomoyuki SHIMADA, Shigeyuki HARADA, Akiyoshi SABU, Yuusuke KOIZUKA, Koichiro OYAMA, Takuya YAMAZAKI