Patents by Inventor Tetsuya Sonobe

Tetsuya Sonobe 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).

  • Injection molding method, injection mold, resin-molded article, and insert resin component
    Publication number: 20030201570
    Abstract: The object of the invention is, in integrating two or more types of resin materials having different compositions or tones in a mold, thus molding a multi-color, multi-material molded article, to increase the strength of the bonding surfaces of the resins. To achieve this object, this invention provides an injection molding method of injecting two or more types of resin materials having different compositions or tones into a mold, thus producing a molded article in which the two or more types of resin materials are bonded. Convexo-concave shapes are formed on the bonding portions of the two or more types of resin materials.
    Type: Application
    Filed: April 4, 2003
    Publication date: October 30, 2003
    Applicants: CANON KABUSHIKI KAISHA, CANON KASEI KABUSHIKI KAISHA
    Inventors: Yoshiaki Sasatani, Kenshirou Abe, Masatoshi Watanabe, Tetsuya Sonobe