Patents by Inventor Eiji Nagai

Eiji Nagai 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: 11435716
    Abstract: An information collecting device controls a plant based on process data acquired from controllers and field devices connected to the controllers. The information collecting device includes an arithmetic controller and an update controller. The arithmetic controller collects first information which is engineering information of the plant and second information which is device information from a controller, a field device or a combination of both selected from the controllers and the field devices. The update controller generates third information based on a definition in which the first information and the second information are set in advance, and updates the third information in a storage based on a preset update cycle.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: September 6, 2022
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Hiroshi Iriguchi, Eiji Nagai, Masatoshi Takubo, Jisong Zhang
  • Patent number: 11075828
    Abstract: An information collecting system collects information associated with (i) a controller connected to a control network and (ii) a host device connected to an information network located at a level higher than the control network, and includes a management device and an information collecting mediation device. The management device is connected to the information network, collects information associated with the host device, transmits an acquisition request for information associated with the controller to the information network, and manages the collected information associated with the host device and information associated with the controller.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: July 27, 2021
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Eiji Nagai, Hiroshi Iriguchi, Masatoshi Takubo
  • Publication number: 20190094832
    Abstract: An information collecting device controls a plant based on process data acquired from controllers and field devices connected to the controllers. The information collecting device includes an arithmetic controller and an update controller. The arithmetic controller collects first information which is engineering information of the plant and second information which is device information from a controller, a field device or a combination of both selected from the controllers and the field devices. The update controller generates third information based on a definition in which the first information and the second information are set in advance, and updates the third information in a storage based on a preset update cycle.
    Type: Application
    Filed: September 21, 2018
    Publication date: March 28, 2019
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Hiroshi Iriguchi, Eiji Nagai, Masatoshi Takubo, Jisong Zhang
  • Publication number: 20190097906
    Abstract: An information collecting system collects information associated with (i) a controller connected to a control network and (ii) a host device connected to an information network located at a level higher than the control network, and includes a management device and an information collecting mediation device. The management device is connected to the information network, collects information associated with the host device, transmits an acquisition request for information associated with the controller to the information network, and manages the collected information associated with the host device and information associated with the controller.
    Type: Application
    Filed: September 21, 2018
    Publication date: March 28, 2019
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Eiji Nagai, Hiroshi Iriguchi, Masatoshi Takubo
  • Patent number: 9250616
    Abstract: A process control system that controls an industrial process implemented in a plant, may include: a network provided in the plant; a first field device that is connected to the network, the first field device being configured to output one of measurement data, which is obtained by measuring a state quantity in the industrial process, and first simulation data, which simulates the state quantity; a controller that is connected to the network, the controller being configured to perform control in response to one of the measurement data and the first simulation data output from the first field device; and a simulator configured to generate the first simulation data to be output from the first field device.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: February 2, 2016
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Takahiro Kanbe, Mitsuhiro Yamamoto, Eiji Nagai, Masatoshi Takubo
  • Publication number: 20130253897
    Abstract: A process control system that controls an industrial process implemented in a plant, may include: a network provided in the plant; a first field device that is connected to the network, the first field device being configured to output one of measurement data, which is obtained by measuring a state quantity in the industrial process, and first simulation data, which simulates the state quantity; a controller that is connected to the network, the controller being configured to perform control in response to one of the measurement data and the first simulation data output from the first field device; and a simulator configured to generate the first simulation data to be output from the first field device.
    Type: Application
    Filed: March 21, 2013
    Publication date: September 26, 2013
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Takahiro Kanbe, Mitsuhiro Yamamoto, Eiji Nagai, Masatoshi Takubo
  • Publication number: 20090152430
    Abstract: The object is to provide a brace which allows its installment to an object portion and its detachment therefrom to be carried out easily. In a brace including a brace body 3 which is attachable between attaching object portions of a structure, at each one of opposed end portions of the brace body 3, there is provided a contact attaching portion to be attached to the attaching object portion. The brace body 3 includes an expandable urging mechanism S which can be expanded to urgedly extend the brace body 3 along a longitudinal direction thereof, with the two contact attaching portions attached to the attaching object portions and a prestress introducing mechanism P which can be switched over between a state for introducing a compressive prestress to the brace body 3 along the longitudinal direction thereof and a state for releasing the introduced prestress. At least a state switchover control portion 22 of the prestress introducing mechanism is provided to be exposed outside the brace body 3.
    Type: Application
    Filed: August 2, 2006
    Publication date: June 18, 2009
    Applicants: KYOTO UNIVERSITY, Eiji NAGAI, DAIWA CORPORATION, TAKENAKA CORPORATION
    Inventors: Fumio Watanabe, Susumu Kono, Eiji Nagai, Kyohei Kono, Takeshi Katayama
  • Patent number: 4896116
    Abstract: An object detection method and apparatus in which, in order to distinguish only an echo wave which is returned back from an object of interest, such as an underground buried object, from those echo waves returned back from another object of objects, the observation signal is divided (an electromagnetic wave as an echo wave) into portions, and the signal portion is converted into a corresponding frequency region to evaluate that spectral distribution and computes frequency parameter values from the spectrum distribution. The object of interest is detected by comparing the reference data of various fields with the parameters of the object of interest, extracting only an echo wave returned back from the object of interest and displaying a corresponding image.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: January 23, 1990
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yuji Nagashima, Yoshikazu Sudo, Junichi Masuda, Yuzo Matsudaira, Kishio Arita, Eiji Nagai