Patents by Inventor Ikuei Matsumura

Ikuei Matsumura 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).

  • Fluid conveying hose
    Patent number: 4510974
    Abstract: A plastic hose suitable for conveying refrigerant in a liquid or gas phase, liquefied gas such as LPG, volatile liquids, or gases such as CO.sub.2, O.sub.2 or N.sub.2 having an impermeable layer or a barrier. The amount of permeation of the gas in the hose to the outside and the amount of permeation of moisture into the hose are limited to extremely small values.
    Type: Grant
    Filed: November 8, 1982
    Date of Patent: April 16, 1985
    Assignee: Hitachi Cable Ltd.
    Inventors: Takeshi Natori, Yoji Kobayashi, Shigetaka Watanabe, Katsumi Shimizu, Ikuei Matsumura, Yoshihiro Namekawa, Satoshi Miyanaga