Patents by Inventor Koji Kawada

Koji Kawada 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: 20230021102
    Abstract: A flow rate control device 100 includes a flow rate control valve 8 having a valve element 8a and a piezoelectric element 8b for moving the valve element, and a control circuit 9 for controlling an operation of the flow rate control valve 8, wherein, in order to perform a pulsed fluid supply, the control circuit 9 is configured so as to open-loop control an applied voltage to the piezoelectric element so that it approaches the target voltage after once applying a voltage V1 exceeding a target voltage V0 corresponding to a target displacement of the piezoelectric element, when a pulsed flow rate setting signal is given.
    Type: Application
    Filed: December 3, 2020
    Publication date: January 19, 2023
    Applicant: FUJIKIN INCORPORATED
    Inventors: Katsuyuki SUGITA, Ryousuke DOHI, Koji KAWADA, Kouji NISHINO, Nobukazu IKEDA
  • Publication number: 20220311733
    Abstract: In order to provide a communication device and a communication system that are capable of automating work for setting a management VLAN, the communication device includes: a communication unit that communicates with another communication device; and a management VLAN supervising unit that activates, when a link up state with the another communication device is detected, a management virtual local area network (VLAN) and sets the management VLAN for the communication unit.
    Type: Application
    Filed: March 10, 2022
    Publication date: September 29, 2022
    Applicant: NEC Corporation
    Inventor: Koji KAWADA
  • Patent number: 11412438
    Abstract: A radio communication apparatus capable of, in a network in which communication may be performed by simultaneously using a plurality of communication paths, improving (e.g., extending) the operating time of the whole network are provided. A radio communication apparatus includes a power-supply information management unit configured to manage power-supply information of another radio communication apparatus for each of N redundant communication paths (N is an integer equal to or greater than two), and a communication management unit configured to perform switching, based on an amount of traffic to be transmitted and the power-supply information, between communication using n communication paths (n is an integer no smaller than two and no greater than N) among the N communication paths and communication using m communication paths (m is an integer no smaller than one and smaller than n (i.e., m<n)) among the N communication paths.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: August 9, 2022
    Assignee: NEC CORPORATION
    Inventor: Koji Kawada
  • Patent number: 11391608
    Abstract: A self-diagnosis method of a flow rate control device includes: a step (a) for measuring a pressure drop characteristic after a pressure control valve (6) has been changed to a closed state from a state where a fluid flows from the upstream side of the pressure control valve with the opening of a flow rate control valve (8) is larger than a restriction part; a step (b) for measuring the pressure drop characteristic after the pressure control valve has been changed to the closed state from a state where the fluid flows from the upstream side of the flow rate control valve to the downstream side with the opening of the flow rate control valve is smaller than the restriction part; a step (c) for determining whether there is an abnormality by comparing the pressure drop characteristic measured in step (a) with a corresponding reference pressure drop characteristic; a step (d) for determining whether there is an abnormality by comparing the pressure drop characteristic measured in step (b) with a corresponding ref
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: July 19, 2022
    Assignee: FUJIKIN INCORPORATED
    Inventors: Katsuyuki Sugita, Ryousuke Dohi, Kaoru Hirata, Koji Kawada, Nobukazu Ikeda, Kouji Nishino
  • Patent number: 11346457
    Abstract: A piezoelectric element-driven valve 1 including a main body, a valve element, piezoelectric actuators, a plurality of cylindrical actuator boxes arranged in series, a cylindrical outer connecting jig detachably connecting the adjacent actuator boxes and having an opening for drawing out wiring, a plurality of piezoelectric actuators accommodated in the actuator box respectively in the same direction, and a cylindrical inner connecting jig slidably accommodated in the outer connecting jig and having an opening for positioning the adjacent piezoelectric actuators and drawing out wiring.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: May 31, 2022
    Assignee: FUJIKIN INCORPORATED
    Inventors: Ryousuke Dohi, Kaoru Hirata, Katsuyuki Sugita, Koji Kawada, Kouji Nishino, Nobukazu Ikeda
  • Patent number: 11226257
    Abstract: A fluid controller is provided having a flow path through which a fluid can flow, a closed space separated from the flow path by an isolation member, and a leak port capable of communicating the closed space with an external part. An anomaly detection device for detecting an anomaly has a pressure sensor detachably fixed to the leak port, a pressure sensor for detecting the pressure in the closed space, a processing module for executing a predetermined information processing, and an detachable mechanism for blocking the leak port from the external part in the state of being fixed. The processing module determines an anomaly of the fluid controller by comparing a detection value detected by the pressure sensor to a predetermined threshold, and transmits a discrimination result of the anomaly of the fluid controller to a server.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: January 18, 2022
    Assignee: Fujikin Inc.
    Inventors: Akihiro Harada, Kouji Nishino, Ryousuke Dohi, Koji Kawada, Katsuyuki Sugita, Nobukazu Ikeda, Michio Yamaji, Tsutomu Shinohara, Ryutaro Tanno, Yuto Kawauchi
  • Publication number: 20210239230
    Abstract: A piezoelectric element-driven valve 1 including a main body, a valve element, piezoelectric actuators, a plurality of cylindrical actuator boxes arranged in series, a cylindrical outer connecting jig detachably connecting the adjacent actuator boxes and having an opening for drawing out wiring, a plurality of piezoelectric actuators accommodated in the actuator box respectively in the same direction, and a cylindrical inner connecting jig slidably accommodated in the outer connecting jig and having an opening for positioning the adjacent piezoelectric actuators and drawing out wiring.
    Type: Application
    Filed: January 28, 2021
    Publication date: August 5, 2021
    Applicant: FUJIKIN INCORPORATED
    Inventors: Ryousuke DOHI, Kaoru HIRATA, Katsuyuki SUGITA, Koji KAWADA, Kouji NISHINO, Nobukazu IKEDA
  • Patent number: 11079774
    Abstract: A flow rate control device (100) comprises: a pressure control valve (6) provided in a flow path; a flow rate control valve (8) provided downstream side of the pressure control valve; and a first pressure sensor (3) for measuring pressure on the downstream side of the pressure control valve and on the upstream side of the flow rate control valve. The flow rate control valve has a valve element (13) seated on/separated from a valve seat (12); a piezoelectric element (10b) for moving the valve element so as be seated on/separated from the valve seat; and a strain sensor (20) provided on a side surface of the piezoelectric element. The pressure control valve (6) is configured to control the pressure control valve (6) on the basis of a signal output from the first pressure sensor (3), and to control the driving of the piezoelectric element of the flow rate control valve (8) based on a signal output from the strain sensor (20).
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: August 3, 2021
    Assignee: FUJIKIN INCORPORATED
    Inventors: Katsuyuki Sugita, Ryousuke Dohi, Kaoru Hirata, Koji Kawada, Nobukazu Ikeda, Kouji Nishino
  • Publication number: 20210211968
    Abstract: A radio communication apparatus capable of, in a network in which communication may be performed by simultaneously using a plurality of communication paths, improving (e.g., extending) the operating time of the whole network are provided. A radio communication apparatus includes a power-supply information management unit configured to manage power-supply information of another radio communication apparatus for each of N redundant communication paths (N is an integer equal to or greater than two), and a communication management unit configured to perform switching, based on an amount of traffic to be transmitted and the power-supply information, between communication using n communication paths (n is an integer no smaller than two and no greater than N) among the N communication paths and communication using m communication paths (m is an integer no smaller than one and smaller than n (i.e., m<n)) among the N communication paths.
    Type: Application
    Filed: January 5, 2021
    Publication date: July 8, 2021
    Applicant: NEC Corporation
    Inventor: Koji KAWADA
  • Patent number: 11054052
    Abstract: A piezoelectric-element-driven valve includes a valve seat provided on a flow path, a valving element detachably seated on the valve seat, and a piezoelectric element, and is configured to move the valve body by extension of the piezoelectric element. The piezoelectric-element-driven valve also is provided with a detection mechanism for detecting an extension amount of the piezoelectric element, the detection mechanism including a strain sensor, and being capable of detecting an movement amount of the valving element from an output of the strain sensor.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: July 6, 2021
    Assignee: FUJIKIN INCORPORATED
    Inventors: Ryousuke Dohi, Kaoru Hirata, Katsuyuki Sugita, Koji Kawada, Kouji Nishino, Nobukazu Ikeda
  • Publication number: 20200367136
    Abstract: The purpose of the present invention is to provide a control device, a communication system, and a control method which make it possible to perform route allocation in consideration of not only the current communication situation but also the frequency and tendency of the occurrence of communication failure, and in accordance with path priority. A control device 10 is a control device which controls communication devices 2A, 2B, and 2C including a wireless communication section and configuring a communication net. The control device comprises: a storage unit 11 in which a communication failure history in the wireless communication section is stored; a determination unit 12 which, on the basis of the communication failure history, determines the stability of the wireless communication section; and a route allocation unit 13 which allocates a communication route on the basis of the stability.
    Type: Application
    Filed: December 19, 2018
    Publication date: November 19, 2020
    Applicant: NEC Corporation
    Inventor: Koji KAWADA
  • Publication number: 20200348704
    Abstract: A flow rate control device (100) comprises: a pressure control valve (6) provided in a flow path; a flow rate control valve (8) provided downstream side of the pressure control valve; and a first pressure sensor (3) for measuring pressure on the downstream side of the pressure control valve and on the upstream side of the flow rate control valve. The flow rate control valve has a valve element (13) seated on/separated from a valve seat (12); a piezoelectric element (10b) for moving the valve element so as be seated on/separated from the valve seat; and a strain sensor (20) provided on a side surface of the piezoelectric element. The pressure control valve (6) is configured to control the pressure control valve (6) on the basis of a signal output from the first pressure sensor (3), and to control the driving of the piezoelectric element of the flow rate control valve (8) based on a signal output from the strain sensor (20).
    Type: Application
    Filed: November 20, 2018
    Publication date: November 5, 2020
    Applicant: FUJIKIN INCORPORATED
    Inventors: Katsuyuki SUGITA, Ryousuke DOHI, Kaoru HIRATA, Koji KAWADA, Nobukazu IKEDA, Kouji NISHINO
  • Publication number: 20200348158
    Abstract: A self-diagnosis method of a flow rate control device includes: a step (a) for measuring a pressure drop characteristic after a pressure control valve (6) has been changed to a closed state from a state where a fluid flows from the upstream side of the pressure control valve with the opening of a flow rate control valve (8) is larger than a restriction part; a step (b) for measuring the pressure drop characteristic after the pressure control valve has been changed to the closed state from a state where the fluid flows from the upstream side of the flow rate control valve to the downstream side with the opening of the flow rate control valve is smaller than the restriction part; a step (c) for determining whether there is an abnormality by comparing the pressure drop characteristic measured in step (a) with a corresponding reference pressure drop characteristic; a step (d) for determining whether there is an abnormality by comparing the pressure drop characteristic measured in step (b) with a corresponding ref
    Type: Application
    Filed: November 20, 2018
    Publication date: November 5, 2020
    Applicant: FUJIKIN INCORPORATED
    Inventors: Katsuyuki SUGITA, Ryousuke DOHI, Kaoru HIRATA, Koji KAWADA, Nobukazu IKEDA, Kouji NISHINO
  • Publication number: 20200018413
    Abstract: A piezoelectric-element-driven valve includes a valve seat provided on a flow path, a valving element detachably seated on the valve seat, and a piezoelectric element, and is configured to move the valve body by extension of the piezoelectric element. The piezoelectric-element-driven valve also is provided with a detection mechanism for detecting an extension amount of the piezoelectric element, the detection mechanism including a strain sensor, and being capable of detecting an movement amount of the valving element from an output of the strain sensor.
    Type: Application
    Filed: December 22, 2017
    Publication date: January 16, 2020
    Applicant: FUJIKIN INCORPORATED
    Inventors: Ryousuke DOHI, Kaoru HIRATA, Katsuyuki SUGITA, Koji KAWADA, Kouji NISHINO, Nobukazu IKEDA
  • Patent number: 10497151
    Abstract: A non-limiting example game apparatus includes a display device, and a card display screen including an image of a card object is displayed on the display device. The image of the card object is constituted by a character image arranged in the front most and a composite image that is arranged at a back thereof, and with the composite image is obtained by combining a color change image, a background image and a pattern image. The color change image includes a plurality of polygons, and a color of each of vertices is set so as to cyclically change according to an attitude of the game apparatus and respective vertices positions of the plurality of polygons. The color change image and the background image are combined with each other, so that brightness of the background image cyclically changes according to the color of the color change image that cyclically changes.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: December 3, 2019
    Assignees: NINTENDO CO., LTD., GAME FREAK INC.
    Inventor: Koji Kawada
  • Publication number: 20180114344
    Abstract: A non-limiting example game apparatus includes a display device, and a card display screen including an image of a card object is displayed on the display device. The image of the card object is constituted by a character image arranged in the front most and a composite image that is arranged at a back thereof, and with the composite image is obtained by combining a color change image, a background image and a pattern image. The color change image includes a plurality of polygons, and a color of each of vertices is set so as to cyclically change according to an attitude of the game apparatus and respective vertices positions of the plurality of polygons. The color change image and the background image are combined with each other, so that brightness of the background image cyclically changes according to the color of the color change image that cyclically changes.
    Type: Application
    Filed: October 25, 2017
    Publication date: April 26, 2018
    Inventor: Koji KAWADA
  • Publication number: 20170359742
    Abstract: A monitoring apparatus includes: a data collection unit that collects from a wireless communication apparatus log information including information indicating change in a modulation scheme within a previously fixed first time period; an analysis unit that fixes the wireless communication apparatus as a monitored apparatus, in a case where the number of changes in the modulation scheme exceeds a first threshold value in the first time period; a data collection unit that collects from the wireless communication apparatus information on a modulation scheme applied when wireless communication is performed for each second time period shorter than the first time period, and information on a data amount transmitted and received by applying the modulation scheme in the second time period; and a line use rate calculation unit that calculates a line use rate of a wireless line in a wireless section using the information collected in the data collection unit.
    Type: Application
    Filed: December 9, 2015
    Publication date: December 14, 2017
    Applicant: NEC Corporation
    Inventor: Koji KAWADA
  • Publication number: 20160293143
    Abstract: It is possible for a user to use a functional portion used while being turned toward an opposite side to a user side or a functional portion used while being turned toward the user with a natural posture, and display is performed in a display direction natural for the user without depending to a putting-on state. A bracelet type communication terminal (200) comprises a first functional portion (120), a second functional portion (130) and a display direction control portion (1121) that controls the display direction on the display portion (12) depending to the putting-on state.
    Type: Application
    Filed: November 14, 2014
    Publication date: October 6, 2016
    Inventors: Yuko KANEMOTO, Koji KAWADA
  • Publication number: 20160210708
    Abstract: An NE configuration information collecting unit (201) collects, from a network device (31), a usage status of each function serving as a license management target. A license billing calculation unit (102) generates billing information for the network device (31) in accordance with a comparison between a latest usage status of each function of the licensee device acquired by the NE configuration information collecting unit (201) and a usage status of each function of the licensee device previously acquired by the NE configuration information collecting unit (201). Thus, the present invention can provide a license management system, a license management apparatus, a license management method, and a program which are capable of performing license management while accurately comprehending changes in a license usage status of each device.
    Type: Application
    Filed: July 1, 2014
    Publication date: July 21, 2016
    Applicant: NEC Corporation
    Inventor: Koji KAWADA
  • Patent number: 9363081
    Abstract: A license administration device manages grant or denial of each optional function in a plurality of licensee devices. The licensee device stores key information encrypted with a cipher key so as to issue a license change request activating or restricting the predetermined optional function. Upon receiving a license change request restricting the predetermined optional function, the license administration device overwrites the key information of the licensee device with a default key. Subsequently, upon receiving a license change request activating the predetermined optional function, the license administration device applies an upgrade key to the key information of the licensee device. The default key or the upgrade key can be decrypted using a cipher key unique to the licensee device. The license administration device manages the licensed maximum for the predetermined optional function and reflects an increment or decrement to the licensing maximum by applying the default key or the upgrade key.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: June 7, 2016
    Assignee: NEC Corporation
    Inventors: Shingo Kinoshita, Koji Kawada