Patents by Inventor Toshiaki Oguchi

Toshiaki Oguchi 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).

  • Electronic calculator watch
    Patent number: 4268913
    Abstract: An electronic calculator watch which comprises timekeeping means composed of an oscillator, a frequency divider connected to the oscillator, a counter circuit connected to the frequency divider, and a driver circuit connected to the counter circuit for providing an output signal indicative of time information, and calculating means composed of an oscillator circuit and a calculation circuit responsive to perform calculations under control of numerical inputs furnished by external operation device provided on a watch case. The watch also comprises a display including a first display section connected to the driver circuit of the timekeeping means to display the output signal delivered therefrom, and a second display section connected to the calculating means to display the result of calculations, each of the first and second display sections having a plurality of digit electrodes and a plurality of segment electrodes arranged in a matrix configuration.
    Type: Grant
    Filed: May 13, 1977
    Date of Patent: May 19, 1981
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Tadahiko Nakagiri, Kunihiro Daigo, Toshiaki Oguchi, Minoru Natori, Toshikazu Hatuse, Toshikazu Shimazaki, Kouhei Kawanobe, Hiroshi Ogawa, Yoshinobu Kashima, Singo Ichikawa, Ryo Namiki, Hisao Yamagata
  • Booster circuit for electronic timepiece
    Patent number: 4173862
    Abstract: A booster circuit for an electronic timepiece having a power supply and a display device adapted to be driven in a matrix driving mode, which comprises a Cockcroft circuit connected to one terminal of the power supply to provide a plurality of boosted output voltages to the display device and voltage compensating means connected to the other terminal of the power supply to compensate for voltage drops caused by said Cockcroft circuit.
    Type: Grant
    Filed: May 25, 1977
    Date of Patent: November 13, 1979
    Inventors: Tadahiko Nakagiri, Kunihiro Daigo, Toshiaki Oguchi, Toshikazu Hatuse, Toshikazu Shimazaki, Shigeru Morokawa, Minoru Natori, Hiroshi Ogawa
  • Alarm watch equipped with electronic calculator
    Patent number: 4149257
    Abstract: An electronic alarm watch having an external operation device, which comprises a timekeeping section and an electronic calculator. The timekeeping section is composed of a quartz crystal oscillator connected to a first battery and providing a relatively high frequency signal to provide a low frequency signal, a counter circuit responsive to the low frequency signal to provide time information signals, a driver circuit providing driving signals in response to the time information signals, a time display section in response to the driving signals, an alarm time detection circuit connected to the counter circuit to detect an alarm time set by the external operation device, and an acoustic device responsive to an output from the alarm time detection circuit to generate a sound indicative of the alarm time.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: April 10, 1979
    Assignee: Citizen Watch Company Limited
    Inventors: Tadahiko Nakagiri, Matao Nezu, Toshiaki Oguchi, Toshikazu Hatuse, Minoru Natori