Patents by Inventor Shigeru Shibazaki

Shigeru Shibazaki 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: 10425059
    Abstract: A crystal resonator includes a crystal element and excitation electrodes. The crystal element has a pair of principal surfaces parallel to an X?-axis and a Z?-axis. The X?-axis is an axis of rotating an X-axis as a crystallographic axis of a crystal in a range of 15 degrees to 25 degrees around a Z-axis as a crystallographic axis of the crystal. The Z?-axis is an axis of rotating the Z-axis in a range of 33 degrees to 35 degrees around the X?-axis. The excitation electrodes are formed on the respective principal surfaces of the crystal element. Elliptical mesa portions or elliptical inverted mesa portions are formed on the respective principal surfaces. The mesa portions project from outer peripheries of the principal surfaces. The inverted mesa portions are depressed from the outer peripheries of the principal surfaces.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: September 24, 2019
    Assignee: NIHON DEMPA KOGYO CO., LTD.
    Inventors: Shigeru Obara, Tetsuya Sato, Masaaki Nakahara, Tomonori Shibazaki, Yuki Oi, Yuya Nishimura
  • Patent number: 6091030
    Abstract: In a display-integrated panel having first and second electrodes crossing each other and being operable to display a gray scale image, a position indicated by an electronic pen is detected by a method including the step of displaying information on a display panel by repeating a step of displaying one frame.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: July 18, 2000
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takao Tagawa, Masayuki Katagiri, Shiro Taga, Shigeru Shibazaki
  • Patent number: 5499067
    Abstract: A projector has a shortened optical path from a light valve to a screen and a reduction in the depth size of its system, and requires less space to mount. Rays of light emitted from a light valve of the project are refracted by a converging lens and reflected by a plane mirror to converge at the primary focal point of an elliptical mirror, and then travel toward the secondary focal point whereat the focal point of a parabolic mirror also exists and a projection lens is disposed. The light rays pass through the projection lens, are reflected by the parabolic mirror and then are brought to a parallel beam of light that is further collected by a Fresnel lens to finally form an image on a lenticular lens-screen.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: March 12, 1996
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Shigeru Shibazaki
  • Patent number: 5495306
    Abstract: A projector has a shortened optical path from a light valve to a screen and a reduction in the depth size of its system and requires less space to mount. Rays of light emitted from a light valve of the projects are refracted by a converging lens and reflected by a plane mirror to converge at the primary focal point of an elliptical mirror, and then travel toward the secondary focal point whereat the focal point of a parabolic mirror also exists and a projection lens is disposed. The light rays pass through the projection lens, are reflected by the parabolic mirror and then are brought to a parallel beam of light that is further collected by a Fresnel lens to finally form an image on a lenticular lens-screen.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: February 27, 1996
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Shigeru Shibazaki
  • Patent number: 5477394
    Abstract: A projector has a shortened optical path from a light valve to a screen and a reduction in the depth size of its system, and requires less space to mount. Rays of light emitted from a light valve of the projector are refracted by a converging lens and reflected by a plane mirror to converge at the primary focal point of an elliptical mirror, and then travel toward the secondary focal point whereat the focal point of a parabolic mirror also exists and a projection lens is disposed. The light rays pass through the projection lens, are reflected by the parabolic mirror and then are brought to a parallel beam of light that is further collected by a Fresnel lens to finally form an image on a lenticular lens-screen.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: December 19, 1995
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Shigeru Shibazaki
  • Patent number: 4671634
    Abstract: A liquid crystal projector which comprises image light-refracting means for deflecting the direction in which ligh beams permeating liquid crystal display panel is projected on a screen by an angle corresponding to the suitable viewing angle of the liquid crystal display panel, and wherein image light thus refracted is thrown on a screen in an enlarged form by means of projection lens systems.
    Type: Grant
    Filed: February 5, 1986
    Date of Patent: June 9, 1987
    Assignee: Casio Computer Co., Ltd.
    Inventors: Masaharu Kizaki, Shigeru Shibazaki
  • Patent number: 4449056
    Abstract: A power supply control system of an installation including at least two devices having respectively electric circuits, e.g.
    Type: Grant
    Filed: September 24, 1981
    Date of Patent: May 15, 1984
    Assignee: Pioneer Electronic Corporation
    Inventor: Shigeru Shibazaki