Patents by Inventor Tomohiko Ban

Tomohiko Ban 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).

  • Stripline laminate dielectric filter with input/output patterns overlapping resonator conductors
    Patent number: 5825264
    Abstract: A dielectric filter includes a laminate substrate formed by laminating and bonding a plurality of dielectric sheets, belt-like resonance electrodes formed on predetermined bond surfaces of the dielectric sheets, input/output electrodes formed at predetermined positions of an outer periphery of the laminate substrate and connected to the belt-like resonance electrodes, and earth electrodes formed on the outer periphery of the laminate substrate under a non-connection state with the input/output electrodes. The end portions of the belt-like resonance electrodes extend to both side surfaces of the laminate substrate. One end of each belt-like resonance electrode is connected to the earth electrode formed on one of the side surfaces of the laminate substrate and serves as a short-circuit terminal, and the other end of the belt-like electrode is exposed on an ungrounded portion on the opposite side surface and serves as an open terminal.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: October 20, 1998
    Assignee: FDK Corporation
    Inventors: Kazuhisa Yamazaki, Nobuaki Nakamura, Yuji Matsushita, Hisao Sato, Tomohiko Ban