Patents by Inventor Hiroshi Toki

Hiroshi Toki 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).

  • Method and program for calculating potential, current, and peripheral electromagnetic field in electric circuit
    Patent number: 10928433
    Abstract: It is possible to comprehensively calculate a potential and a current of a transmission line in an electric circuit, a potential and a current of an element, and an electromagnetic field including noise generated from the electric circuit. A computer performs a circuit configuration inputting step of inputting a circuit configuration of a distributed constant circuit and a lumped constant circuit and an initial value of each variable, and a calculating step of obtaining a scalar potential and a current in a multi-conductor transmission line, a scalar potential and a voltage in an element, and an electromagnetic radiation amount by, under the circuit configuration and the initial value, solving a basic equation of a transmission theory using a boundary condition formula at x=0 and w which are the boundary between the distributed constant circuit and the lumped constant circuit.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: February 23, 2021
    Assignee: OSAKA UNIVERSITY
    Inventors: Masayuki Abe, Hiroshi Toki
  • METHOD AND PROGRAM FOR CALCULATING POTENTIAL, CURRENT, AND PERIPHERAL ELECTROMAGNETIC FIELD IN ELECTRIC CIRCUIT
    Publication number: 20180246154
    Abstract: It is possible to comprehensively calculate a potential and a current of a transmission line in an electric circuit, a potential and a current of an element, and an electromagnetic field including noise generated from the electric circuit. A computer performs a circuit configuration inputting step of inputting a circuit configuration of a distributed constant circuit and a lumped constant circuit and an initial value of each variable, and a calculating step of obtaining a scalar potential and a current in a multi-conductor transmission line, a scalar potential and a voltage in an element, and an electromagnetic radiation amount by, under the circuit configuration and the initial value, solving a basic equation of a transmission theory using a boundary condition formula at x=0 and w which are the boundary between the distributed constant circuit and the lumped constant circuit.
    Type: Application
    Filed: June 15, 2016
    Publication date: August 30, 2018
    Applicant: OSAKA UNIVERSITY
    Inventors: Masayuki ABE, Hiroshi TOKI
  • Sizing agent for carbon fibers
    Patent number: 4781947
    Abstract: A sizing agent for a carbon fiber comprized mainly of an unsaturated urethane compound produced by a reaction of an unsaturated alcohol with an isocyanate which is able to couple the carbon fiber with an unsaturated polyester resin or vinylester resin is disclosed. The preferably unsaturated alcohols are allylalcohols and reaction products of an unsaturated carboxylic acids with an alkyleneoxides.
    Type: Grant
    Filed: August 12, 1987
    Date of Patent: November 1, 1988
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Makoto Saito, Hiroshi Toki, Makoto Miyazaki, Hiroshi Inoue