Patents by Inventor Akiyoshi Honma

Akiyoshi Honma 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).

  • Portective relay with second harmonic suppression
    Patent number: 4477854
    Abstract: A relay adapted for protection of a transformer and capable of functioning with certainty upon occurrence of any internal fault in the transformer but not functioning in the case of an inrush current which flows therein at the time of non-load energization or the like.
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: October 16, 1984
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masaji Usui, Akiyoshi Honma