Patents by Inventor Noriyoshi Izumi

Noriyoshi Izumi 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).

  • Radio receiver and intermediate frequency signal generation method
    Patent number: 10505569
    Abstract: An IF filter band-limits an intermediate frequency signal outputted from a mixer. An AFC unit controls the oscillation frequency of a PLL so that the frequency of the intermediate frequency signal is a predetermined frequency. When the AFC unit controls the oscillation frequency of the PLL, a band control unit controls the passing characteristic of the IF filter to the passing characteristic of a wide band, and after the completion of the control, controls the passing characteristic of the IF filter to the passing characteristic of a narrow band. A frequency correction unit refers to a filter information storage unit, and corrects the oscillation frequency controlled by the AFC unit according to the difference between the center frequency of the passband of the passing characteristic of the wide band and the center frequency of the passband of the passing characteristic of the narrow band.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: December 10, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Wataru Naito, Noriyoshi Izumi, Kazuhiro Kijima
  • RADIO RECEIVER AND INTERMEDIATE FREQUENCY SIGNAL GENERATION METHOD
    Publication number: 20190181888
    Abstract: An IF filter band-limits an intermediate frequency signal outputted from a mixer. An AFC unit controls the oscillation frequency of a PLL so that the frequency of the intermediate frequency signal is a predetermined frequency. When the AFC unit controls the oscillation frequency of the PLL, a band control unit controls the passing characteristic of the IF filter to the passing characteristic of a wide band, and after the completion of the control, controls the passing characteristic of the IF filter to the passing characteristic of a narrow band. A frequency correction unit refers to a filter information storage unit, and corrects the oscillation frequency controlled by the AFC unit according to the difference between the center frequency of the passband of the passing characteristic of the wide band and the center frequency of the passband of the passing characteristic of the narrow band.
    Type: Application
    Filed: October 8, 2018
    Publication date: June 13, 2019
    Inventors: Wataru NAITO, Noriyoshi IZUMI, Kazuhiro KIJIMA
  • Cycloalkylurea compounds
    Patent number: 5420164
    Abstract: A cycloalkylurea compound of the formula (I): ##STR1## wherein each symbol is as defined in the specification, or a pharmaceutically acceptable salt thereof, which compound inhibits ACAT and is useful as hypolipidemic and antiatherosclerotic medicine.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: May 30, 1995
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Tadashi Mishina, Kanou Harada, Joji Yasuoka, Hidenobu Kushuhara, Noriyoshi Izumi