Patents by Inventor Manabu Shiga

Manabu Shiga 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).

  • Organic pigment with high transparency and hydrophobicity
    Patent number: 6706863
    Abstract: The present invention provides Pigment Yellow 180 having an excellent transparency produced by using a fine slurry of 5-acetoacetylamino-benzimidazolone as a coupling component when Pigment Yellow 180 is produced by coupling reaction of 5-acetoacetylamino-benzimidazolone and diazo component obtained by diazotization of 1,2-bis(2-aminophenoxy)ethane.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: March 16, 2004
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Isao Hashimoto, Noboru Tsuda, Hiroshi Ohsawa, Tomonori Okazaki, Manabu Shiga, Kohei Ohtsuki
  • Organic pigment with high transparency and hydrophobicity
    Publication number: 20030040559
    Abstract: The present invention provides Pigment Yellow 180 having an excellent transparency produced by using a fine slurry of 5-acetoacetylamino-benzimidazolone as a coupling component when Pigment Yellow 180 is produced by coupling reaction of 5-acetoacetylamino-benzimidazolone and diazo component obtained by diazotization of 1,2-bis(2-aminophenoxy)ethane.
    Type: Application
    Filed: August 15, 2002
    Publication date: February 27, 2003
    Inventors: Isao Hashimoto, Noboru Tsuda, Hiroshi Ohsawa, Tomonori Okazaki, Manabu Shiga, Kohei Ohtsuki