Patents by Inventor Yoshito Tobe

Yoshito Tobe 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: 20240294383
    Abstract: The present invention is a surface-modified carbon material including chemical addends added to the surface of graphene, such that a one-dimensional periodicity corresponding to a large number of addition positions of the chemical addends can be observed in a Fourier-transformed image of a scanning probe microscopic image of the surface of graphene. The surface-modified carbon material of the present invention has a bandgap and therefore can be used as a sensor capable of electronically controlling an operation or another electronic device.
    Type: Application
    Filed: April 17, 2024
    Publication date: September 5, 2024
    Inventors: Kazukuni Tahara, Yoshito Tobe, Toru Ishikawa, Yuki Kubo, Steven Willy Nicolas de Feyter, Brandon Edward Hirsch, Zhi Li
  • Patent number: 11993517
    Abstract: The present invention is a surface-modified carbon material including chemical addends added to the surface of graphene, such that a one-dimensional periodicity corresponding to a large number of addition positions of the chemical addends can be observed in a Fourier-transformed image of a scanning probe microscopic image of the surface of graphene. The surface-modified carbon material of the present invention has a bandgap and therefore can be used as a sensor capable of electronically controlling an operation or another electronic device.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: May 28, 2024
    Assignee: Japan Science and Technology Agency
    Inventors: Kazukuni Tahara, Yoshito Tobe, Toru Ishikawa, Yuki Kubo, Steven Willy Nicolas De Feyter, Brandon Edward Hirsch, Zhi Li
  • Publication number: 20210070616
    Abstract: The present invention is a surface-modified carbon material including chemical addends added to the surface of graphene, such that a one-dimensional periodicity corresponding to a large number of addition positions of the chemical addends can be observed in a Fourier-transformed image of a scanning probe microscopic image of the surface of graphene. The surface-modified carbon material of the present invention has a bandgap and therefore can be used as a sensor capable of electronically controlling an operation or another electronic device.
    Type: Application
    Filed: February 28, 2019
    Publication date: March 11, 2021
    Inventors: Kazukuni Tahara, Yoshito Tobe, Toru Ishikawa, Yuki Kubo, Steven Willy Nicolas De Feyter, Brandon Edward Hirsch, Zhi Li
  • Patent number: 7781223
    Abstract: A fluorescent molecular wire is provided, having a fluorescent polymer main chain to which an optically active substituent is linked so as to be conjugatable form, the optically active substituent being represented by formula (I) below: where R1 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms; R2, R3, R4, R5, R6, R7, R8, and R9 represent independently a hydrogen atom, a linear alkyl group having 1 to 30 carbon atoms that may have a substituent, a branched alkyl group having 2 to 30 carbon atoms that may have a substituent, a cyclic alkyl group having 3 to 30 carbon atoms that may have a substituent, an aryl group having 6 to 30 carbon atoms that may have a substituent, or an aralkyl group having 7 to 30 carbon atoms that may have a substituent, and R3 and R7 may be bonded respectively to R4 and R8 to form an alkylene group having 2 to 60 carbon atoms that may have a substituent; and R10 and R11 represent independently a hydrogen atom or an alkyl group having 1 to 15 carbon atoms t
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: August 24, 2010
    Assignee: Japan Science and Technology Agency
    Inventors: Yoshito Tobe, Keiji Hirose
  • Patent number: 7358403
    Abstract: An optically active compound having an unsaturated bond at an optically active binding site, wherein the unsaturated bond and a fluorescent substituent or a substituent capable of imparting fluorescence are united in a conjugated manner; and a chiral sensor comprising the optically active compound as defined above. The chiral sensor can highly selectively recognize a specified chiral compound in high sensitivity.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: April 15, 2008
    Assignee: Japan Science and Technology Agency
    Inventors: Yoshito Tobe, Keiji Hirose
  • Publication number: 20070179272
    Abstract: A fluorescent molecular wire is provided, having a fluorescent polymer main chain to which an optically active substituent is linked so as to be conjugatable form, the optically active substituent being represented by formula (I) below: where R1 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms; R2, R3, R4, R5, R6, R7, R8, and R9 represent independently a hydrogen atom, a linear alkyl group having 1 to 30 carbon atoms that may have a substituent, a branched alkyl group having 2 to 30 carbon atoms that may have a substituent, a cyclic alkyl group having 3 to 30 carbon atoms that may have a substituent, an aryl group having 6 to 30 carbon atoms that may have a substituent, or an aralkyl group having 7 to 30 carbon atoms that may have a substituent, and R3 and R7 may be bonded respectively to R4 and R8 to form an alkylene group having 2 to 60 carbon atoms that may have a substituent; and R10 and R11 represent independently a hydrogen atom or an alkyl group having 1 to 15 carbon atoms
    Type: Application
    Filed: November 22, 2004
    Publication date: August 2, 2007
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Yoshito Tobe, Keiji Hirose
  • Publication number: 20050227366
    Abstract: An optically active compound having an unsaturated bond at an optically active binding site, wherein the unsaturated bond and a fluorescent substituent or a substituent capable of imparting fluorescence are united in a conjugated manner; and a chiral sensor comprising the optically active compound as defined above. The chiral sensor can highly selectively recognize a specified chiral compound in high sensitivity.
    Type: Application
    Filed: June 10, 2003
    Publication date: October 13, 2005
    Inventors: Yoshito Tobe, Keiji Hirose
  • Patent number: 6953871
    Abstract: A process for preparing a poly-ethynyl-substituted aromatic compound characterized by reacting a halogenated benzene with an ethynylzinc halide; a process for preparing a poly-ethynyl-substituted aromatic compound characterized by using a halogenated benzene having at least two kinds of halogen atoms as a halogenated benzene, and (A) reacting one kind of the halogen atoms existing in the halogenated benzene with an ethynyl group-containing compound; and (B) reacting the other kind of halogen atoms remaining in the formed compound with an ethynylzinc halide.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: October 11, 2005
    Assignee: Japan Science and Technology Corporation
    Inventors: Yoshito Tobe, Motohiro Sonoda
  • Publication number: 20040111000
    Abstract: A process for preparing a poly-ethynyl-substituted aromatic compound characterized by reacting a halogenated benzene with an ethynylzinc halide; a process for preparing a poly-ethynyl-substituted aromatic compound characterized by using a halogenated benzene having at least two kinds of halogen atoms as a halogenated benzene, and (A) reacting one kind of the halogen atoms existing in the halogenated benzene with an ethynyl group-containing compound; and (B) reacting the other kind of halogen atoms remaining in the formed compound with an ethynylzinc halide.
    Type: Application
    Filed: September 11, 2003
    Publication date: June 10, 2004
    Inventors: Yoshito Tobe, Motohiro Sonoda
  • Patent number: 6101184
    Abstract: In a data switching method for switching data among data switching apparatuses arranged on an ATM network and interconnected by links along a cell data transmission path, data input to a specified one of the data switching apparatuses from an upstream-side one of the data switching apparatuses along the transmission path is sent out to a downstream-side one of the data switching apparatuses along the transmission path. A branch-system data switching operation for delivering data, which has been input to the specified data switching apparatus from at least one terminal linked to the specified data switching apparatus, to a specified one of the terminals and the data switching apparatuses, is performed separately from a trunk-system data switching operation for delivering data, which has been input to the specified data switching apparatus from the upstream-side data switching apparatus, to the downstream-side data switching apparatus and terminals.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: August 8, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshito Tobe, Yasuhisa Shiobara