Patents by Inventor Hiroyuki Masaki

Hiroyuki Masaki 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).

  • Patent number: 4737944
    Abstract: In a temperature gradient adjustor for a temperature-compensated electronic watch, the temperature gradient adjusting range can be widened without any drop in the temperature gradient adjusting resolution of a temperature sensitive oscillator by adding a roughly temperature gradient adjusting variable frequency divider for variably dividing the frequency of the output of a temperature sensitive oscillator and by operating the temperature gradient adjustor at a value which is prepared by adding a constant numerical value to temperature gradient adjusting numerical information.A constant voltage supplying to a temperature sensitive oscillator can be finely adjusted from external side so as to optimize a linearity of frequency versus temperature characteristic.
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: April 12, 1988
    Assignee: Seiko Instruments Inc.
    Inventors: Yuichi Inoue, Hiroshi Odagiri, Hiroyuki Masaki, Shuji Ohtawa, Masao Kasuga