Patents by Inventor Masanori Ishimatsu

Masanori Ishimatsu 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).

  • Circuit breaker provided with parallel resistor
    Patent number: 4489291
    Abstract: A circuit breaker fitted with a parallel resistor and provided with main contacts and resistor contacts arranged electrically in parallel with the main contacts wherein the resistor is formed of a material selected from the group consisting of Cr, CrN, Cr.sub.3 C.sub.2, CrB, NiO and Mgo. The resistor element generally is made of a material in which the product of the specific heat expressed in Cal/g.degree.C. with the density expressed in g/cm.sup.3 is at least 0.7.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: December 18, 1984
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Mitsuru Toyoda, Eiichi Haginomori, Masanori Ishimatsu, Tsutomu Okutomi