Patents by Inventor Hayao Ishitani

Hayao Ishitani 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).

  • Electrical junction block for automobile and a method for manufacturing the same
    Patent number: 5154647
    Abstract: An electrical junction block for an automobile which can be used in an atmosphere at temperatures equal to or higher than 70.degree. C. and in which metal bus bars formed in preset circuit patterns are used as a wiring connection inside a case body. The case body of the electrical junction block is molded by using a nylon polymer alloy. A method for manufacturing an electrical junction block for automobiles. The electrical junction block having upper and lower case bodies which are engaged with each other. The upper and lower case bodies are molded by using a nylon polymer alloy, and functional parts are mounted without incurring a moisture absorbing process.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: October 13, 1992
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Hayao Ishitani, Masayuki Sakurai, Yasuo Morita
  • Method of preventing fine cracks from occuring in rubber or plastic insulation of an insulated wire or cable exposed to electron beam irradiation
    Patent number: 4226687
    Abstract: A method of manufacturing an electric wire or cable having an improved rubber or plastic insulation layer which has the maximum wall thickness of beam penetration of 4mm or over and whose properties are improved by irradiation with an electron beam, wherein the wire or cable runs under the scanner of an electron beam accelerator while being rotated about the axis of the wire or cable at such a speed as causes the same portion of the wire or cable to be irradiated with the electron beam at least twice during a period of less than 10 seconds; and the electron beam accelerator directs on the insulation layer of the wire or cable an electron beam which is accelerated to an energy of 1 MeV or over and whose maximum penetration range in the said insulation layer is larger than its thickness.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: October 7, 1980
    Assignees: The Furukawa Electric Co., Ltd., Japan Atomic Energy Research Institute
    Inventors: Takashi Sasaki, Miyuki Hagiwara, Kunio Araki, Hayao Ishitani, Eisuke Saito, Kyozi Komatsu
  • Method of manufacturing shaped articles of cross-linked poly-.alpha.-olefin composition by irradiation of electron beam
    Patent number: 4134812
    Abstract: A method of manufacturing shaped articles of cross-linked poly-.alpha.-olefin composition by irradiation of electron beam which comprises the steps of blending a poly-.alpha.-olefin with a compound miscible therewith which is expressed by the general formula:X--Ym(where X is a group free from acetylenic linkage, Y is a group containing acetylenic linkage and m is an integer of 1 or over) and tetrakis-[methylene-(3,5-di-t-butyl-4-hydroxy-hydrocinnamate)]-methane; molding the blended mass into a desired shape; and cross-linking said shaped articles by irradiation of electron beam.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: January 16, 1979
    Assignees: The Furukawa Electric Co., Ltd., Japan Atomic Energy Research Institute
    Inventors: Takashi Sasaki, Kunio Araki, Miyuki Hagiwara, Hayao Ishitani, Eisuke Saito, Kyoji Komatsu