Patents by Inventor Nobuyuki Fujikawa

Nobuyuki Fujikawa 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).

  • Diaphragm member and diaphragm valve provided with diaphragm member
    Patent number: 10969025
    Abstract: A diaphragm member includes a film-shaped diaphragm made of PFA and a valve body which is laser welded to a central hole portion of the diaphragm.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: April 6, 2021
    Assignee: ADVANCE DENKI KOGYO KABUSHIKI KAISHA
    Inventors: Hironori Matsuzawa, Nobuyuki Fujikawa
  • DIAPHRAGM MEMBER AND DIAPHRAGM VALVE PROVIDED WITH DIAPHRAGM MEMBER
    Publication number: 20200049260
    Abstract: A diaphragm member includes a film-shaped diaphragm made of PFA and a valve body which is laser welded to a central hole portion of the diaphragm.
    Type: Application
    Filed: July 23, 2019
    Publication date: February 13, 2020
    Applicant: ADVANCE DENKI KOGYO KABUSHIKI KAISHA
    Inventors: Hironori MATSUZAWA, Nobuyuki FUJIKAWA
  • Mixing valve and mixing device
    Patent number: 7644725
    Abstract: The object is to provide a mixing valve and a mixing device which can more easily control the flow rates of one fluid and another fluid or fluids in comparison with a conventional mixing valve. In a mixing valve 10A in which a main passage 13 through which one fluid f1 passes and at least one subsidiary passage 14 (14A, 14B) through which the other fluids f2, f3 pass are connected via opening/closing valve portions 20A, 20B to open/close communicating openings 18A, 18B, pressure sensors 31, 32, 33 (34) are disposed in the main passage and the subsidiary passages, respectively, to detect the pressures of the fluids passing through the main passage and the subsidiary passages.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: January 12, 2010
    Assignee: Advance Electric Japan Kabushiki Kaisha
    Inventors: Hironori Matsuzawa, Nobuyuki Fujikawa
  • Mixing valve and mixing device
    Publication number: 20070137707
    Abstract: The object is to provide a mixing valve and a mixing device which can more easily control the flow rates of one fluid and another fluid or fluids in comparison with a conventional mixing valve. In a mixing valve 10A in which a main passage 13 through which one fluid f1 passes and at least one subsidiary passage 14 (14A, 14B) through which the other fluids f2, f3 pass are connected via opening/closing valve portions 20A, 20B to open/close communicating openings 18A, 18B, pressure sensors 31, 32, 33(34) are disposed in the main passage and the subsidiary passages, respectively, to detect the pressures of the fluids passing through the main passage and the subsidiary passages.
    Type: Application
    Filed: December 16, 2005
    Publication date: June 21, 2007
    Inventors: Hironori Matsuzawa, Nobuyuki Fujikawa