Patents by Inventor Hideo Yamaoki

Hideo Yamaoki 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).

  • Filter of the distributed constants type
    Patent number: 3959749
    Abstract: A filter of the distributed constants type which has a dielectric substrate, a transmission line electrode and at least one branch electrode on the dielectric substrate, the branch electrode being connected to the transmission line electrode. This filter is advantageous because it is capable of easily eliminating or passing various frequency bands by changing the structure of the electrodes on the dielectric substrate. Further, wide band elimination and/or large attenuation can be easily achieved by connecting in series the filters having various electrode structures.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: May 25, 1976
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Horishi Ikushima, Hideo Yamaoki