Patents by Inventor Wataru Naganawa

Wataru Naganawa 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 mold for manufacturing fiber-reinforced plastic structure
    Patent number: 9782939
    Abstract: In the manufacturing method of the present invention, as preparation for providing a mold 30 with protrusions 31 and 32 to be printed on an FRP material of a skin 1 in co-bold molding, which requires resetting of the skin 1 to the mold 30, a long protrusion 32A and a short protrusion 32B are interchangeable as one protrusion 32. The long protrusion 32A is printed to form a second recessed part 12 in the skin 1, and before the skin 1 is reset, the long protrusion 32A is replaced with the short protrusion 32B. In this way, as the short protrusion 32B is housed in the second recessed part 12 formed during elongation of the mold 30, the skin 1 can be reset in the state of being positioned relative to the mold 30 by the first protrusion 31 and the short protrusion 32B.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: October 10, 2017
    Assignee: MITSUBISHI AIRCRAFT CORPORATION
    Inventors: Tomohiro Murai, Wataru Naganawa, Hiroshi Tokutomi, Masaaki Nishiguchi
  • METHOD AND MOLD FOR MANUFACTURING FIBER-REINFORCED PLASTIC STRUCTURE
    Publication number: 20140361455
    Abstract: In the manufacturing method of the present invention, as preparation for providing a mold 30 with protrusions 31 and 32 to be printed on an FRP material of a skin 1 in co-bold molding, which requires resetting of the skin 1 to the mold 30, a long protrusion 32A and a short protrusion 32B are interchangeable as one protrusion 32. The long protrusion 32A is printed to form a second recessed part 12 in the skin 1, and before the skin 1 is reset, the long protrusion 32A is replaced with the short protrusion 32B. In this way, as the short protrusion 32B is housed in the second recessed part 12 formed during elongation of the mold 30, the skin 1 can be reset in the state of being positioned relative to the mold 30 by the first protrusion 31 and the short protrusion 32B.
    Type: Application
    Filed: June 2, 2014
    Publication date: December 11, 2014
    Applicant: MITSUBISHI AIRCRAFT CORPORATION
    Inventors: Tomohiro Murai, Wataru Naganawa, Hiroshi Tokutomi, Masaaki Nishiguchi