Patents by Inventor Hidetoshi KASAKAWA

Hidetoshi KASAKAWA 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).

  • Stitched carbon fiber base material and wet prepreg using same
    Patent number: 9427934
    Abstract: Each sheet material is formed by arraying carbon fiber lines, each having a predetermined width, in parallel with one another. Meanwhile, an array direction of the carbon fiber lines of each sheet material is set to form an angle in a range from ±30° to ±60° to a weaving advancing direction of a stitching yarn. Moreover, a stretch ratio of the stitched base material in its lengthwise direction in a case where a load per inch width of the stitched base material is applied in the weaving advancing direction of the stitching yarn is equal to or below 4% when the load is 5 N, and is equal to or above 10% when the load is 25 N.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: August 30, 2016
    Assignees: IHI Corporation, IHI AEROSPACE CO., LTD.
    Inventors: Yoshinobu Tsuchiya, Hidetoshi Kasakawa, Masahiko Murata, Yu Shigenari, Hiroyuki Satoh
  • STITCHED CARBON FIBER BASE MATERIAL AND WET PREPREG USING SAME
    Publication number: 20150125651
    Abstract: Each sheet material is formed by arraying carbon fiber lines, each having a predetermined width, in parallel with one another. Meanwhile, an array direction of the carbon fiber lines of each sheet material is set to form an angle in a range from ±30° to ±60° to a weaving advancing direction of a stitching yarn. Moreover, a stretch ratio of the stitched base material in its lengthwise direction in a case where a load per inch width of the stitched base material is applied in the weaving advancing direction of the stitching yarn is equal to or below 4% when the load is 5 N, and is equal to or above 10% when the load is 25 N.
    Type: Application
    Filed: January 15, 2015
    Publication date: May 7, 2015
    Applicants: IHI AEROSPACE CO., LTD., IHI CORPORATION
    Inventors: Yoshinobu TSUCHIYA, Hidetoshi KASAKAWA, Masahiko MURATA, Yu SHIGENARI, Hiroyuki SATOH