Patents by Inventor Hiroataka Ishihara

Hiroataka Ishihara 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).

  • Antenna apparatus and communication system
    Publication number: 20030146874
    Abstract: Conventional antennas devices provide in sufficient performance in terms of directivity, efficiency, or the like. An antenna device includes a radiating element 11 which is provided with a feed terminal 16 to draw power and has a spiral shape; a passive element 12 which is installed side by side with the radiating element 11 and has a spiral shape; an earth ground 15 disposed in opposing relation to the radiating element 11 and the passive element 12; a first connecting electrode 13 for connecting one end of the radiating element 11 to the earth ground 15; and a second connecting electrode 14 for connecting one end of the passive element 12 to the earth ground 15, and the first and second connecting electrodes 13 and 14 are displaced with respect to each other in a plane which includes the spiral shape.
    Type: Application
    Filed: January 13, 2003
    Publication date: August 7, 2003
    Inventors: Joji Kane, Hiroataka Ishihara