Patents by Inventor Yukishige Kondo

Yukishige Kondo 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).

  • Organic colorant, coloring composition, and inkjet ink
    Patent number: 10703911
    Abstract: Organic colorant represented by General Formula (1) below: where in the General Formula (1), R1 and R2 each independently represent C1-C20 alkyl group, C1-C20 alkenyl group, phenyl group, naphthyl group, or group represented by —(CH2)n—COO—R3, —(CH2)n—R4, —(CH2)n—CONH—R5, —CR6R7—COO—R8, or —(CH2)n—OCOCH3; R3 represents hydrogen atom or C1-C2 alkyl group; R4 represents hydroxy group, C1-C2 alkoxy group, C2-C5 alkenyloxy group, SO3Na group, OSO3Na group, phenyl group, phenylalkyl group, naphthyl group, or naphthylalkyl group; R5 represents C1-C20 alkyl group, C1-C20 alkenyl group, or C1-C12 hydroxyalkyl group; R6 represents hydrogen atom or methyl group; R7 represents C1-C4 alkyl group; R8 represents C1-C5 alkyl group; and n is integer of from 1 to 12.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: July 7, 2020
    Assignees: Ricoh Company, Ltd., Tokyo University of Science Foundation
    Inventors: Takuya Fujita, Yoshimasa Miyazawa, Tatsuya Tomura, Masahiro Yanagisawa, Kiyofumi Nagai, Yukishige Kondo, Juki Migii
  • Inkjet ink and coloring composition
    Patent number: 10655029
    Abstract: An inkjet ink including: a stilbene-based compound represented by General Formula (1) below; where in the General Formula (1), R1 and R3 each independently represent, for example, an alkyl group including 1 to 20 carbon atoms, an alkenyl group including 1 to 20 carbon atoms, a phenyl group, or a naphthyl group.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: May 19, 2020
    Assignees: Ricoh Company, Ltd., Tokyo University of Science Foundation
    Inventors: Takuya Fujita, Yoshimasa Miyazawa, Hisashi Habashi, Tatsuya Tomura, Tomohiro Inoue, Yukishige Kondo, Yutaka Takahashi
  • ORGANIC COLORANT, COLORING COMPOSITION, AND INKJET INK
    Publication number: 20190010331
    Abstract: Organic colorant represented by General Formula (1) below: where in the General Formula (1), R1 and R2 each independently represent C1-C20 alkyl group, C1-C20 alkenyl group, phenyl group, naphthyl group, or group represented by —(CH2)n—COO—R3, —(CH2)n—R4, —(CH2)n—CONH—R5, —CR6R7—COO—R8, or —(CH2)n—OCOCH3; R3 represents hydrogen atom or C1-C2 alkyl group; R4 represents hydroxy group, C1-C2 alkoxy group, C2-C5 alkenyloxy group, SO3Na group, OSO3Na group, phenyl group, phenylalkyl group, naphthyl group, or naphthylalkyl group; R5 represents C1-C20 alkyl group, C1-C20 alkenyl group, or C1-C12 hydroxyalkyl group; R6 represents hydrogen atom or methyl group; R7 represents C1-C4 alkyl group; R8 represents C1-C5 alkyl group; and n is integer of from 1 to 12.
    Type: Application
    Filed: July 5, 2018
    Publication date: January 10, 2019
    Inventors: Takuya Fujita, Yoshimasa Miyazawa, Tatsuya Tomura, Masahiro Yanagisawa, Kiyofumi Nagai, Yukishige Kondo, Juki Migii
  • INKJET INK AND COLORING COMPOSITION
    Publication number: 20180094155
    Abstract: An inkjet ink including: a stilbene-based compound represented by General Formula (1) below; where in the General Formula (1), R1 and R3 each independently represent, for example, an alkyl group including 1 to 20 carbon atoms, an alkenyl group including 1 to 20 carbon atoms, a phenyl group, or a naphthyl group.
    Type: Application
    Filed: October 3, 2017
    Publication date: April 5, 2018
    Inventors: Takuya FUJITA, Yoshimasa MIYAZAWA, Hisashi HABASHI, Tatsuya TOMURA, Tomohiro INOUE, Yukishige KONDO, Yutaka TAKAHASHI
  • Methods of using redox-active surfactants to control polymer interactions
    Patent number: 9592300
    Abstract: The present invention provides methods utilizing redox-active surfactants to provide electrochemical control over polymer interactions. In one embodiment, the invention is directed to a transfection method using a redox-active transfection agent that preferentially promotes transfection dependent on the oxidation state of the transfection agent. Accordingly, certain methods according to the invention provide spatial and/or temporal control of cell transfection.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: March 14, 2017
    Assignee: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventors: Nicholas L. Abbott, David M. Lynn, Yukishige Kondo, Christopher M. Jewell, Melissa E. Hays
  • Methods of using redox-active surfactants to control polymer interactions
    Publication number: 20060287270
    Abstract: The present invention provides methods utilizing redox-active surfactants to provide electrochemical control over polymer interactions. In one embodiment, the invention is directed to a transfection method using a redox-active transfection agent that preferentially promotes transfection dependent on the oxidation state of the transfection agent. Accordingly, certain methods according to the invention provide spatial and/or temporal control of cell transfection.
    Type: Application
    Filed: June 9, 2006
    Publication date: December 21, 2006
    Inventors: Nicholas Abbott, David Lynn, Yukishige Kondo, Christopher Jewell, Melissa Hays