Patents by Inventor Hiroshi Shimoi

Hiroshi Shimoi 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).

  • PRIMARY RADIATOR FOR PARABOLIC ANTENNA, LOW NOISE BLOCK DOWN-CONVERTER, AND PARABOLIC ANTENNA APPARATUS
    Publication number: 20090058749
    Abstract: A primary radiator for a parabolic antenna includes a cylindrical horn antenna body widened towards an end opening in a cone shape, a horn cap provided at the end opening of the horn antenna body, and a plurality of cylindrical protruding portions formed of a dielectric. The protruding portions are provided on the inner wall surface of the horn cap, concentric with a central axis of the horn antenna body, and concentrically arranged with each other, and the height of an inner one is determined to be higher than an outer one. According to such a configuration, a primary radiator for a parabolic antenna configured to favorably suppress the VSWR up to a bandwidth of 1050 MHz can be provided.
    Type: Application
    Filed: August 21, 2008
    Publication date: March 5, 2009
    Inventors: Hiroshi Shimoi, Toshiaki Oku
  • Magnetic recording and reproducing apparatus incorporating clogging detection
    Patent number: 5193033
    Abstract: A magnetic recording/reproducing apparatus incorporating a clogging detector includes comparator for comparing with a predetermined value an absolute value of signals which are produced by reproducing recorded signals immediately after recording. Clogging signals may be supplied to cleaner for cleaning heads when the absolute value is less than the predetermined value.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: March 9, 1993
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroshi Shimoi, Takafumi Inadomi, Ryoichi Nakamura, Kan Kawahara