Patents by Inventor Shuzo Mihara

Shuzo Mihara 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).

  • Complex inorganic colored pigment with reduced elution of hexavalent chromium therefrom
    Patent number: 9115262
    Abstract: The present invention provides a CICP that maintains high durability and excellent color properties inherent in chromium-containing CICP while allowing a reduced amount of hexavalent chromium elution from the pigment. The CICP with reduced elution of hexavalent chromium therefrom characterized in that the pigment consists of: a pigment component selected from the group consisting of Color Index (C.I.) Pigment Blue 36, C.I. Pigment Green 17, C.I. Pigment Green 51, C.I. Pigment Green 26, C.I. Pigment Yellow 162, C.I. Pigment Yellow 163, C.I. Pigment Red 233, C.I. Pigment Red 235, C.I. Pigment Red 236, C.I. Pigment Red 230, C.I. Pigment Brown 24, C.I. Pigment Brown 33, C.I. Pigment Brown 35, C.I. Pigment Brown 39, C.I. Pigment Brown 40, C.I. Pigment Brown 46, C.I. Pigment Black 27, C.I. Pigment Black 28, C.I. Pigment Brown 29, and C.I. Pigment Black 30; and an additive component in an amount of 0.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: August 25, 2015
    Assignee: TOKAN MATERIAL TECHNOLOGY CO., LTD.
    Inventors: Naoko Harada, Shuzo Mihara, Seiichi Kadooka, Hisashi Kamatani
  • COMPLEX INORGANIC COLORED PIGMENT WITH REDUCED ELUTION OF HEXAVALENT CHROMIUM THEREFROM
    Publication number: 20140251185
    Abstract: The present invention provides a CICP that maintains high durability and excellent color properties inherent in chromium-containing CICP while allowing a reduced amount of hexavalent chromium elution from the pigment. The CICP with reduced elution of hexavalent chromium therefrom characterized in that the pigment consists of: a pigment component selected from the group consisting of Colour Index (C.I.) Pigment Blue 36, C.I. Pigment Green 17, C.I. Pigment Green 51, C.I. Pigment Green 26, C.I. Pigment Yellow 162, C.I. Pigment Yellow 163, C.I. Pigment Red 233, C.I. Pigment Red 235, C.I. Pigment Red 236, C.I. Pigment Red 230, C.I. Pigment Brown 24, C.I. Pigment Brown 33, C.I. Pigment Brown 35, C.I. Pigment Brown 39, C.I. Pigment Brown 40, C.I. Pigment Brown 46, C.I. Pigment Black 27, C.I. Pigment Black 28, C.I. Pigment Brown 29, and C.I. Pigment Black 30; and an additive component in an amount of 0.
    Type: Application
    Filed: November 2, 2012
    Publication date: September 11, 2014
    Applicant: TOKAN MATERIAL TECHNOLOGY CO., LTD.
    Inventors: Naoko Harada, Shuzo Mihara, Seiichi Kadooka, Hisashi Kamatani
  • Method of manufacturing inorganic pigment
    Patent number: 5972097
    Abstract: The invention provides a method for producing colorful inorganic pigments, which comprise complex oxides of various elements, which have good weather resistance and good heat resistance, and which are widely used in colorants for ceramics and in colorants for coatings and plastics. In the method, the composite oxides are sintered at a low temperature for a short period of time to give homogeneous and well colored pigments. Under the sintering conditions, the composite oxides are not sintered excessively. The grinding step in the method is simplified.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: October 26, 1999
    Assignee: Ferro Enamels (Japan) Limited
    Inventors: Toyotaro Maki, Shuzo Mihara, Shigeru Suzuki