Patents by Inventor Tomoki Takizawa

Tomoki Takizawa 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: 5789854
    Abstract: A cathode ray tube having a double-layer low-reflective coating layer, or a triple-layer low-reflective coating layer including a high-refractive transparent conductive layer formed on the outer surface of a face plate thereof, and a low-refractive smooth transparent layer formed on the outer surface of the high-refractive transparent conductive layer, or a low-refractive transparent layer having concavities and convexities formed on the low-refractive smooth transparent layer, wherein yellow dye or pigment is added to at least one of said three layers, whereby the reflection spectrum in the visible ray region can be flattened so that a cathode ray tube is obtained in which reflection in the short wavelength region and long wavelength region can be reduced, coloring can be suppressed, and natural external reflected light can be obtained.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: August 4, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tomoki Takizawa, Suguru Fujii, Mikako Maeda
  • Patent number: 5770258
    Abstract: A method of producing a cathode-ray tube (CRT) of anti-static-processed type and further a cathode-ray tube which screens a leakage electric field (VLF band width). The method including the steps of forming a high-refractive transparent conductive layer, a low-refractive smooth transparent layer, and a low-refractive rough transparent layer on a faceplate of the CRT. This triple coat layer serving to reduce the weight of the CRT, minimize the deterioration of the resolution and contrast of images displayed, diminish the reflection of external light, and provide sufficient film strength for practical use.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: June 23, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tomoki Takizawa, Hiroshi Okuda
  • Patent number: 5698258
    Abstract: A cathode ray tube includes a face plate on which are formed a first transparent layer which has a high refractive index and is conductive and a second transparent layer which has a low refractive index. Thereby, the reflectance of the outer surface of the face plate can be made low and, at the same time, an antistatic property can be obtained.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: December 16, 1997
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tomoki Takizawa, Hiroshi Okuda
  • Patent number: 5519282
    Abstract: A cathode-ray tube (CRT) of anti-static-processed type and further a cathode-ray tube which screens a leakage electric field (VLF band width) has a triple coat layer formed on a face plate thereof. The triple coat layer includes a high-refractive transparent conductive layer, a low-refractive smooth transparent layer, and a low-refractive rough transparent layer; and is formed on the face plate to reduce the weight of the CRT, minimize the deterioration of the resolution and contrast of images displayed, diminish the reflection of external light, and provide sufficient film strength for practical use.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: May 21, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tomoki Takizawa, Hiroshi Okuda
  • Patent number: 5451840
    Abstract: Human bodies are shielded from an alternating electric field radiated from a deflection yoke of a cathode-ray tube device to prevent the alternating electric field from adversely affecting the human bodies. For an alternating electric field traveling forward in the direction of a tube axis 28 of a cathode-ray tube, a cone section 1b is formed with a conductive film 17 for shielding an electric field and/or a face panel 2 is formed with a transparent conductive film 21 for shielding an electric field and the transparent conductive film 21 is grounded or an optimum potential is given only to the transparent conductive film 21 for shielding an electric field.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: September 19, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Fumio Abe, Kouji Shingai, Hiroshi Okuda, Tetsuya Yamaguchi, Tomoki Takizawa