Patents by Inventor Toshimichi NAKAJIMA

Toshimichi NAKAJIMA 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).

  • Carbon fiber and method for producing carbon fiber
    Patent number: 10316433
    Abstract: Carbon fibers having a high tensile strength satisfy the relationship represented by formula (1) and one of the relationships represented by formulas (2) to (5): La?1??(1), La??0.5+0.01×TM when 170?TM?230??(2), La??37.3+0.17×TM when 230<TM?240??(3), La??2.5+0.025×TM when 240<TM?300??(4), and La?2+0.01×TM when 300<TM??(5) where La is a crystal size in nm in a direction parallel to an axis of the fibers measured with by X-ray diffraction, and TM is a tensile modulus in GPa.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: June 11, 2019
    Assignee: TOHO TENAX Co., LTD.
    Inventors: Yoshinori Suzuki, Toshimichi Nakajima
  • CARBON FIBER AND METHOD FOR PRODUCING CARBON FIBER
    Publication number: 20180051399
    Abstract: Carbon fibers having a high tensile strength satisfy the relationship represented by formula (1) and one of the relationships represented by formulas (2) to (5): La?1??(1), La??0.5+0.01×TM when 170?TM?230??(2), La??37.3+0.17×TM when 230<TM?240??(3), La??2.5+0.025×TM when 240<TM?300??(4), and La?2+0.01×TM when 300<TM??(5) where La is a crystal size in nm in a direction parallel to an axis of the fibers measured with by X-ray diffraction, and TM is a tensile modulus in GPa.
    Type: Application
    Filed: March 29, 2016
    Publication date: February 22, 2018
    Applicant: TOHO TENAX CO.,LTD.
    Inventors: Yoshinori SUZUKI, Toshimichi NAKAJIMA