Patents by Inventor Masashi Numano

Masashi Numano 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).

  • Patent number: 5294769
    Abstract: The present invention provides an electric joining method of a body to be jointed including the butted portion of at least between electroconductive ceramics to be jointed or between an electroconductive ceramics and a metal to be jointed, whereby the body to be jointed is electrically jointed while the thermal stress generated at the ceramics materials to be jointed is eased. In the electric joining method according to the present invention, at least a pair of electrodes are brought to butt against the materials to be jointed holding at least one or more butted portions therebetween, with a joining agent interposed at the butted portions. Moreover, there provided are a first heating means for heating the materials to be jointed between the electrodes by Joule heat through impression of a voltage between the electrodes and, a second heating means for heating a part of said materials to be jointed and its vicinity where a large temperature gradient is formed only by the first heating means.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: March 15, 1994
    Assignee: Daihen Corporation
    Inventors: Tokumitsu Nishi, Kouji Okuda, Hiroshi Takai, Hisakiyo Hoshino, Masashi Numano, Natsumi Miyake