Patents by Inventor Yasuhito Yaji

Yasuhito Yaji 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).

  • Patent number: 10380523
    Abstract: Resources, product classes, processes, and product orders are registered in mutual association. From the information of product classes, processes, and resources, variables and constants used when formulating an objective function and a constraint expression are constructed. A constraint setting screen is displayed which includes contents of the constraint expression described by using the selection input field of identification information of the product classes, processes, and resources. Based on a result of selective input to this constraint setting screen, the contents of constraint are set. Further, an object setting screen is displayed which includes the contents of an object described using the product classes and processes and text information indicating the contents of the object, and a selection input field thereof. The contents of the object are registered based on a result of selective input to this object setting screen.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: August 13, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hirokazu Kobayashi, Yasuhito Yaji, Akihito Furukawa, Minenori Inatomi
  • Publication number: 20150081373
    Abstract: Resources, product classes, processes, and product orders are registered in mutual association. From the information of product classes, processes, and resources, variables and constants used when formulating an objective function and a constraint expression are constructed. A constraint setting screen is displayed which includes contents of the constraint expression described by using the selection input field of identification information of the product classes, processes, and resources. Based on a result of selective input to this constraint setting screen, the contents of constraint are set. Further, an object setting screen is displayed which includes the contents of an object described using the product classes and processes and text information indicating the contents of the object, and a selection input field thereof. The contents of the object are registered based on a result of selective input to this object setting screen.
    Type: Application
    Filed: April 11, 2013
    Publication date: March 19, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hirokazu Kobayashi, Yasuhito Yaji, Akihito Furukawa, Minenori Inatomi
  • Patent number: 7865260
    Abstract: A production schedule creation device includes: a production simulator (100) simulating a production process expressing the production state and the production constraint of the production process; a mathematical expression holding device holding a mathematical model (110) created by acquiring information relating to creation of the production schedule in attention as a mathematical model expressing, in a mathematical expression, the production state and the production constraint of the production process; and an optimization calculation device (120) performing the optimization calculation by using a predetermined evaluation function for the mathematical model (110) and calculating a production instruction for the production simulator. The production instruction obtained by the optimization calculation device is supplied to the production simulator (100) so as to execute simulation. Thus, an optimum solution can be obtained by performing only one simulation.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: January 4, 2011
    Assignee: Nippon Steel Corporation
    Inventors: Yasuhito Yaji, Kenji Sugiyama, Tetsuaki Kurokawa, Masanori Shioya, Kuniharu Ito, Hirokazu Kobayashi
  • Patent number: 7860595
    Abstract: A production schedule creation device includes: a production simulator (100) simulating a production process expressing the production state and the production constraint of the production process; a mathematical expression holding device holding a mathematical model (110) created by acquiring information relating to creation of the production schedule in attention as a mathematical model expressing, in a mathematical expression, the production state and the production constraint of the production process; and an optimization calculation device (120) performing the optimization calculation by using a predetermined evaluation function for the mathematical model (110) and calculating a production instruction for the production simulator. The production instruction obtained by the optimization calculation device is supplied to the production simulator (100) so as to execute simulation. Thus, an optimum solution can be obtained by performing only one simulation.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: December 28, 2010
    Assignee: Nippon Steel Corporation
    Inventors: Yasuhito Yaji, Kenji Sugiyama, Tetsuaki Kurokawa, Masanori Shioya, Kuniharu Ito, Hirokazu Kobayashi
  • Publication number: 20100168893
    Abstract: A production schedule creation device includes: a production simulator (100) simulating a production process expressing the production state and the production constraint of the production process; a mathematical expression holding device holding a mathematical model (110) crated by acquiring information relating to creation of the production schedule in attention as a mathematical model expressing, in a mathematical expression, the production state and the production constraint of the production process; and an optimization calculation device (120) performing optimization calculation by using a predetermined evaluation function for the mathematical model (110) and calculating a production instruction for the production simulator. The production instruction obtained by the optimization calculation device is supplied to the production simulator (100) so as to execute simulation. Thus, an optimum solution can be obtained by performing only one simulation.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 1, 2010
    Applicant: Nippon Steel Corporation
    Inventors: Yasuhito Yaji, Kenji Sugiyama, Tetsuaki Kurokawa, Masanori Shioya, Kuniharu Ito, Hirokazu Kobayashi
  • Publication number: 20100138023
    Abstract: A production schedule creation device includes: a production simulator (100) simulating a production process expressing the production state and the production constraint of the production process; a mathematical expression holding device holding a mathematical model (110) crated by acquiring information relating to creation of the production schedule in attention as a mathematical model expressing, in a mathematical expression, the production state and the production constraint of the production process; and an optimization calculation device (120) performing the optimization calculation by using a predetermined evaluation function for the mathematical model (110) and calculating a production instruction for the production simulator. The production instruction obtained by the optimization calculation device is supplied to the production simulator (100) so as to execute simulation. Thus, an optimum solution can be obtained by performing only one simulation.
    Type: Application
    Filed: January 8, 2010
    Publication date: June 3, 2010
    Applicant: Nippon Steel Corporation
    Inventors: Yasuhito Yaji, Kenji Sugiyama, Tetsuaki Kurokawa, Masanori Shioya, Kuniharu Ito, Hirokazu Kobayashi
  • Patent number: 7676293
    Abstract: A production schedule creation device includes: a production simulator (100) simulating a production process expressing the production state and the production constraint of the production process; a mathematical expression holding device holding a mathematical model (110) created by acquiring information relating to creation of the production schedule in attention as a mathematical model expressing, in a mathematical expression, the production state and the production constraint of the production process; and an optimization calculation device (120) performing the optimization calculation by using a predetermined evaluation function for the mathematical model (110) and calculating a production instruction for the production simulator. The production instruction obtained by the optimization calculation device is supplied to the production simulator (100) so as to execute simulation. Thus, an optimum solution can be obtained by performing only one simulation.
    Type: Grant
    Filed: December 24, 2004
    Date of Patent: March 9, 2010
    Assignee: Nippon Steel Corporation
    Inventors: Yasuhito Yaji, Kenji Sugiyama, Tetsuaki Kurokawa, Masanori Shioya, Kuniharu Ito, Hirokazu Kobayashi
  • Publication number: 20070168067
    Abstract: A production schedule creation device includes: a production simulator (100) simulating a production process expressing the production state and the production constraint of the production process; a mathematical expression holding device holding a mathematical model (110) crated by acquiring information relating to creation of the production schedule in attention as a mathematical model expressing, in a mathematical expression, the production state and the production constraint of the production process; and an optimization calculation device (120) performing the optimization calculation by using a predetermined evaluation function for the mathematical model (110) and calculating a production instruction for the production simulator. The production instruction obtained by the optimization calculation device is supplied to the production simulator (100) so as to execute simulation. Thus, an optimum solution can be obtained by performing only one simulation.
    Type: Application
    Filed: December 24, 2004
    Publication date: July 19, 2007
    Inventors: Yasuhito Yaji, Kenji Sugiyama, Tetsuaki Kurokawa, Masanori Shioya, Kuniharu Ito, Hirokazu Kobayashi