Patents by Inventor Seizi Nakanishi

Seizi Nakanishi 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).

  • Finish for carbon fiber precursors
    Patent number: 5783305
    Abstract: The invention provides an improved carbon fiber precursor finish which contains (A) the reaction product of a saturated aliphatic dicarboxylic acid and a monoalkyl ester of an alkylene oxide adduct of bisphenol A, to eliminate fluffs on precursors, and fused or broken precursors throughout stabilization and carbonization processes in carbon fiber production, and thus to provide precursors to be processed into quality high-performance carbon fibers.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: July 21, 1998
    Assignee: Matsumoto Yushi-Seiyaku Co. Ltd.
    Inventors: Takao Masaki, Tomoo Komatsubara, Yoshiaki Tanaka, Seizi Nakanishi, Mikio Nakagawa, Junji Kanamori
  • Textile treating composition
    Patent number: 5571442
    Abstract: A textile treating composition imparting durable water repellency, detachability, heat resistance, and smooth and slick handle to acrylic fiber and polyacrylo- nitril precursors for carbon fiber; and minimizing stain on guides or rolls in fiber processing is disclosed. The composition comprises amino-modified polysiloxanes, monoesters of dicarboxylic acids, nonionic surfactants, and amino carboxylic acids.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 5, 1996
    Assignee: Matsumoto Yushi-Seiyaku Co., Ltd.
    Inventors: Takao Masaki, Tomoo Komatsubara, Seizi Nakanishi