Patents by Inventor Tetsu So

Tetsu So 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).

  • Microwave-absorptive composite
    Patent number: 4960633
    Abstract: A microwave absorptive composite suitable for use in ships, aircrafts and the like comprises an outermost layer of a thermosetting resin-impregnated, fibrous sheet; an intermediate layer of a normally liquid, carbonblack-containing silicone rubber sheet; and an innermost layer of a reinforced thermosetting resin sheet, the three layers being integrally laminated in that order. The silicone rubber is curable at room temperature or with heat.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: October 2, 1990
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Misao Hiza, Hajime Yamazaki, Kazuhiro Sugihara, Tetsu So
  • Multi-layered microwave absorber and method of manufacturing the same
    Patent number: 4923736
    Abstract: A multi-layered microwave absorber suitable for use in ships, aircrafts and the like comprises a plurality of layers differing in impedance which are bonded together into an integral sheet structure by a silicone-type adhesive compound applied to a coat thickness of less than 0.1 mm. The absorber is capable of wave absorption over a wide band, free from deformation or distortion, and highly heat-resistant and weather-proof. A method of manufacturing the multi-layered microwave absorber is also disclosed.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: May 8, 1990
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Misao Hiza, Hajime Yamazaki, Kazuhiro Sugihara, Tetsu So