Patents by Inventor Masanori Takeuchi

Masanori Takeuchi 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).

  • Polymer clad quartz optical fiber cord
    Patent number: 4968115
    Abstract: A polymer clad quartz optical fiber cord comprising a core of quartz glass, a clad of an organic polymer surrounding said core, a protective layer surrounding said clad and a covering layer surrounding said protective layer, and an organic polymeric tension fiber disposed between said protective layer and said covering layer characterized in that the cross-sectional structure of said cord satisfies the following formula: ##EQU1## where D3 represents the outer diameter (in mm) of said protective layer, D4 represents the inner diameter (in mm) of the covering layer, d represents the denier number of the tension fiber and is an integer from 1,000 to 5,000, and .rho. represents the relative density of the tension fiber.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: November 6, 1990
    Assignee: Toray Industries, Inc.
    Inventors: Hidekazu Kunieda, Masanori Takeuchi
  • Polyester filament having excellent antistatic properties and process for preparing the same
    Patent number: 4035441
    Abstract: A polyester filament in which a polyether-polyester block copolymer is dispersed as fine striae along the filament axis, at least one of which is substantially endless. Process for preparing the same includes a melt spinning apparatus with static mixing elements interposed between separate molten polymer feed passageways and spinneret holes.
    Type: Grant
    Filed: June 24, 1974
    Date of Patent: July 12, 1977
    Assignee: Toray Industries, Inc.
    Inventors: Tadakazu Endo, Masanori Takeuchi, Tuneo Hanada, Kiyoshi Nakagawa, Hideo Komatsu, Itaru Nakamura