Patents by Inventor Kazunari Kume

Kazunari Kume 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).

  • Electric timepiece for displaying the operating condition thereof
    Patent number: 4058969
    Abstract: In a battery operated an electric timepiece operated by a battery of the type a time display, such as a second hand, when the voltage of the battery decreases below a predetermined value, the movement of the second hand is modified to give an alarm that the life of the battery has terminated.
    Type: Grant
    Filed: September 8, 1976
    Date of Patent: November 22, 1977
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Munetaka Tamaru, Kazunari Kume, Hideshi Oono, Minoru Watanabe, Hideo Sato, Shigeru Morokawa
  • Timepiece with calendar mechanism
    Patent number: 4026100
    Abstract: A timepiece with a calendar mechanism for automatically correcting the date-indication at each end of the months with thirty days or less, which comprises first driving means for feeding a date dial, second driving means for selectively driving the date dial and means for controlling the second driving means to energized it at the end of the month with thirty days or less. The second driving means is supplied with a power blanched from the power transmitting route for the first driving means thereby resulting in the simplification in its construction.
    Type: Grant
    Filed: September 23, 1975
    Date of Patent: May 31, 1977
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Kazunari Kume, Minoru Watanabe, Hideshi Oono, Munetaka Tamaru
  • Electronic timepiece with electrochromic display element
    Patent number: 4006585
    Abstract: An electronic timepiece with a digital display device employing electrochromic materials, such as titanate and niobate, as an electro-optical element. An electrochromic material produces different states of coloration depending upon the polarity of voltage applied thereto for a remarkably long period, and with a minimum of power consumption, whereby the timepiece enjoys a minimization in its size, a long life for its battery, and a variable design in the display.
    Type: Grant
    Filed: January 3, 1975
    Date of Patent: February 8, 1977
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Munetaka Tamaru, Kazunari Kume, Minoru Watanabe, Hideshi Ohno
  • Electric timepiece for displaying the operating condition thereof
    Patent number: 3998043
    Abstract: In a battery operated electric timepiece operated by a battery of the type including a time display, such as a second hand, when the voltage of the battery decreases below a predetermined value, the movement of the second hand is modified to give an alarm that the life of the battery has terminated.
    Type: Grant
    Filed: November 25, 1974
    Date of Patent: December 21, 1976
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Munetaka Tamaru, Kazunari Kume, Hideshi Oono, Minoru Watanabe, Hideo Sato, Shigeru Morokawa
  • Timepiece with calendar mechanism
    Patent number: 3992868
    Abstract: An electronic timepiece having a calendar mechanism for displaying a date or date and day includes circuitry for detecting the timing or the movement of the calendar mechanism and for generating a detecting signal. The timepiece also includes means for controlling the electric power supplied to energizing means for the calendar mechanism when the detecting signal is supplied.
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: November 23, 1976
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Munetaka Tamaru, Kazunari Kume, Minoru Watanabe, Hideshi Oono, Hideo Sato