Patents by Inventor Yoshiaki Hukuhara

Yoshiaki Hukuhara 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 of fusion welding resin articles difficult to melt
    Patent number: 5779843
    Abstract: In a method of fusion welding resin articles difficult to melt due to a fusion retarder present in the articles in the form of a fusion retarding element or structure, the articles having surface portions in contact with each other so as to be bonded one to another, a fusion accelerator is applied to the surface portions, with the accelerator being capable of destroying the fusion retarder when heated. After or simultaneously with this step, the resin articles are heated so that the fusion accelerator destroys the fusion retarder, so as to cause the surface portions to melt, before finally allowing the resin articles to cool down.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: July 14, 1998
    Assignees: Toua Kokyu Tugitevarubu Seizo Co. Ltd, EF Tekuno Limited Company
    Inventors: Masaru Kumagai, Yoshiaki Hukuhara