Patents by Inventor Toshikazu Hatuse
Toshikazu Hatuse 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).
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Patent number: 4271493Abstract: A drive mechanism for an additional mechanism of an electronic timepiece having a time-keeping system driven by a reversible stepping motor, in which an auxiliary driving source is arranged to accumulate energy utilizing a drive power transmitted from a time-keeping system for driving additional mechanism, and locking means maintains the energy stored in the auxiliary driving source.Type: GrantFiled: June 19, 1979Date of Patent: June 2, 1981Assignee: Citizen Watch Co., Ltd.Inventors: Munetaka Tamaru, Toshikazu Hatuse
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Patent number: 4270198Abstract: An electronic timepiece having a frequency standard, a frequency converter, a control circuit responsive to a low frequency time unit signal to provide first and second output signals, and a driver circuit responsive to the first and second output signals to provide first and second drive signals, which timepiece comprises a reversible electro-mechanical transducer rotatable in a clockwise direction in response to the first drive signal and in a counter-clockwise direction in response to the second drive signal, first and second wheel trains driven by the electro-mechanical transducer independently from each other, and first and second time indicating means actuated by the first and second wheel trains, respectively.Type: GrantFiled: October 12, 1979Date of Patent: May 26, 1981Inventors: Munetaka Tamura, Toshikazu Hatuse
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Patent number: 4268913Abstract: 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: GrantFiled: May 13, 1977Date of Patent: May 19, 1981Assignee: 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
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Patent number: 4257115Abstract: A switch structure for an analog quartz crystal timepiece having a watchglass plate, a time dial to display time in an analog mode, and a digital display device, which switch structure comprises a plurality of transparent electrically conductive electrode films provided on the watchglass plate at positions corresponding to numerical display indicia on the time dial to permit generation of input signals corresponding to the numerical display indicia, respectively.Type: GrantFiled: February 10, 1978Date of Patent: March 17, 1981Assignee: Citizen Watch Co., Ltd.Inventors: Toshikazu Hatuse, Minoru Natori, Toshikazu Shimazaki, Kouhei Kawanobe, Hiroshi Ogawa
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Patent number: 4255801Abstract: An electronic watch comprising a timepiece circuit consisting of a reference oscillation source, a frequency divider and a display driving circuit, a display device connected to an output of said timepiece circuit, a power supply driving said timepiece circuit, an external actuator operating said timepiece circuit from the exterior of the watch, an outer case consisting of a case and a band, and a flexible hinge making the case integral with the band whereby there may be provided a useful and functional watch which is small in size and thin, and have no shortcoming such as a tendency for disconnection and erroneous wiring.Type: GrantFiled: April 4, 1979Date of Patent: March 10, 1981Assignee: Citizen Watch Co. Ltd.Inventors: Sadao Ode, Toshikazu Hatuse
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Patent number: 4210798Abstract: A device for automatically removing glass from timepiece cases and attaching the glass to the timepiece case again is disclosed. The device comprises a case holding frame disposed on a heater board and a push rod for pushing the glass upon the timepiece case, whereby the timepiece case is locally heated under pressure.Type: GrantFiled: May 4, 1978Date of Patent: July 1, 1980Assignee: Citizen Watch Co., Ltd.Inventors: Sadao Ode, Toshikazu Hatuse
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Patent number: 4173862Abstract: 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: GrantFiled: May 25, 1977Date of Patent: November 13, 1979Inventors: Tadahiko Nakagiri, Kunihiro Daigo, Toshiaki Oguchi, Toshikazu Hatuse, Toshikazu Shimazaki, Shigeru Morokawa, Minoru Natori, Hiroshi Ogawa
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Patent number: 4150365Abstract: A driver circuit for an electrochromic display device which includes segment electrodes and a common electrode. The driver circuit has a power source, switching means connected between the power source and the segment electrodes, and circuit means disposed between the common electrode and the power source. The circuit means is operative to couple the common electrode to either a positive terminal or a negative terminal of the power source, whereby an electric current will flow through the segment electrodes in bleaching and coloring directions with the use of a single power source.Type: GrantFiled: July 1, 1976Date of Patent: April 17, 1979Assignee: Citizen Watch Co., Ltd.Inventors: Minoru Natori, Toshikazu Hatuse, Kouhei Kawanobe, Hiroshi Ogawa, Fukuo Sekiya, Katsuo Nishimura
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Patent number: 4149257Abstract: 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: GrantFiled: May 31, 1977Date of Patent: April 10, 1979Assignee: Citizen Watch Company LimitedInventors: Tadahiko Nakagiri, Matao Nezu, Toshiaki Oguchi, Toshikazu Hatuse, Minoru Natori
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Patent number: 4060974Abstract: A method and apparatus for driving an electrochromic display device in which an electric current is applied only to one of display elements for which non-coincidence exists between an initially applied display information signal and a subsequently applied display information signal. In one preferred embodiment, a driver circuit comprises a latch circuit for storing a display information signal, a non-coincidence detection circuit for detecting non-coincidence between a subsequently applied display information signal and an initially applied display information signal stored in the latch circuit, and a signal generating circuit responsive to a non-coincidence signal from the detection circuit for generating an output signal for a display element for which non-coincidence is detected.Type: GrantFiled: July 1, 1976Date of Patent: December 6, 1977Assignee: Citizen Watch Company LimitedInventors: Minoru Natori, Toshikazu Hatuse, Kouhei Kawanobe, Hiroshi Ogawa, Fukuo Sekiya, Heihachiro Ebihara, Misao Uchino