Patents by Inventor Seiji Kayama

Seiji Kayama 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).

  • Horn antenna
    Patent number: 4633264
    Abstract: A horn antenna comprises a horn of the type including a rectangular throat, a rectangular opening located in a plane parallel to and spaced part from the throat and having at least one dimension larger than a corresponding dimension of the throat, and four wall portions joining the throat and the opening. An electrically conductive member is disposed so as to define any one diagonal across the horn from and including the opening to and including the throat.
    Type: Grant
    Filed: February 15, 1984
    Date of Patent: December 30, 1986
    Assignee: General Research of Electronics, Inc.
    Inventors: Kazuyoshi Imazeki, Seiji Kayama