Patents by Inventor Ikuo Fujimoto

Ikuo Fujimoto 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).

  • Method for producing crosslinked polyethylenes
    Patent number: 4228255
    Abstract: A novel method for crosslinking a polyolefin comprising reacting a polyolefin, which is a low density polyethylene having a density less than 0.93 and melt index of 0.1-0.5 g/10 min. or a polyolefin mixture containing a low density polyethylene having a density less than 0.93 as major component, with an organic silane and a free radical generating compound to form a silane-grafted polyolefin, then mixing silane-grafted polyolefin with a silanol condensation catalyst, and heating them. According to this method, the crosslinking takes place concurrently with forming by extrusion, and a shaped article having a high degree of crosslinking with smooth surface is obtained. The method according to this invention is especially suited for covering electrical wires with polyolefin.
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: October 14, 1980
    Assignee: The Fujikura Cable Works Ltd.
    Inventors: Ikuo Fujimoto, Setsuya Isshiki, Yoshikazu Kurita, Yoji Sato