Patents by Inventor Sadao Masubuchi

Sadao Masubuchi 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: 5338631
    Abstract: A one-shot color scheme for forming a color image by one exposure cycle is characterized in that color toners consist of three kinds of color toners for transmitting cyan, magenta, and yellow color components and emitting the same colors as the transmitted color components, red, green, and blue light components whose exposure energy amounts are variable are caused to be incident on the color toners on the photoconductive layer, and the color toners are selectively separated from the photoconductive layer by changing a combination of the color light components and the exposure energy amounts.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: August 16, 1994
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Sadao Masubuchi
  • Patent number: 4730140
    Abstract: A method of driving a diode type display unit in which a charge regulating period is added to driving signal waveform in order to regulate amount of charge in a display picture element capacitor in the display unit wherein a two-terminal element having nonlinear current-voltage characteristics is provided two-dimensionally on a substrate, an electrooptical element capable of controlling the optical quality by means of applied voltage is disposed in response to the two-terminal element, charge is injected into the electrooptical element by utilizing the current-voltage nonlinearity in the two-terminal element for writing period, and the charge injected is held by utilizing the current-voltage nonlinearity in the two-terminalelement for holding period thereby effectig display.
    Type: Grant
    Filed: December 11, 1986
    Date of Patent: March 8, 1988
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Sadao Masubuchi
  • Patent number: 4723837
    Abstract: A MiM diode constructed by at least two functional parts in diodes, and a shape of the functional parts of the diodes is defined in such that the sum of area of the functional parts of the diodes is constant with respect to amount of deviation from a certain value in mask alignment.
    Type: Grant
    Filed: November 15, 1984
    Date of Patent: February 9, 1988
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Sadao Masubuchi
  • Patent number: 4711531
    Abstract: In the ferroelectric liquid crystal display apparatus, the molecule alignment or orientation of the ferroelectric liquid crystal is refreshed by the reset voltage before the succeeding signal display commences. The line shift signal of the oscillator in the control unit is sent to the shift register to select the scanning electrode to which the reset voltage is applied every scanning period.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: December 8, 1987
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Sadao Masubuchi
  • Patent number: 4662718
    Abstract: An expansion system for a liquid crystal video display device having a plurality of scanning electrodes, a plurality of data electrodes, drivers for respectively driving the scanning electrodes and data electrodes. The scanning electrodes and data electrodes are driven only during an expansion period in a field, and voltage between the scanning electrode and the data electrode is zero during a non-expansion period in the field.
    Type: Grant
    Filed: October 19, 1984
    Date of Patent: May 5, 1987
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Sadao Masubuchi
  • Patent number: 4652912
    Abstract: A system of signal application to color picture elements of a color display apparatus of the matrix-drive type in which a unit displaying picture element is formed of one red, one blue and two green picture elements and drive signals are applied to unit driving picture elements which is formed by dividing each unit displaying picture element into at least two groups of picture elements whereby a color picture display of high resolution and high picture quality is accomplished.
    Type: Grant
    Filed: November 30, 1984
    Date of Patent: March 24, 1987
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Sadao Masubuchi
  • Patent number: 4591902
    Abstract: A column electrode driver circuit for a matrix type color television panel in which a color television picture is displayed by a time sharing drive comprises analog line memories, analog latch circuits and analog pulse width modulating circuits. The use of these analog circuits reduces the number of elements of a matrix type color television driver circuit.
    Type: Grant
    Filed: January 20, 1984
    Date of Patent: May 27, 1986
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Sadao Masubuchi
  • Patent number: 4249801
    Abstract: A liquid crystal display device to display information in color, utilizing dichroic and diffusion reflectors. Application of an electric field causes a change from a Grandjean texture of the liquid crystal to a static scattering mode, to effect scattering of light in desired display areas so that these areas are viewed in the reflection color of the dichroic reflector and other areas in the transmission color.
    Type: Grant
    Filed: October 25, 1978
    Date of Patent: February 10, 1981
    Assignee: Citizen Watch Company Limited
    Inventor: Sadao Masubuchi