Patents by Inventor Tetujiro Takahashi

Tetujiro Takahashi 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).

  • Phosphoric ester compound
    Patent number: 4746462
    Abstract: There is provided a new phosphoric ester compound represented by the formula below. ##STR1## (where one or more than one of the three R's are hydroxyl-terminated polyester residues obtained by self-polycondensation of a hydroxy-carboxylic acid; and one or two of the three R's, in case of being remained, are hydrogen atoms, cations, or residues of an alcohol excluding the above-mentioned polyesters.
    Type: Grant
    Filed: January 23, 1986
    Date of Patent: May 24, 1988
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Michiei Nakamura, Hitoshi Takeuchi, Tetujiro Takahashi, Minoru Takizawa, Shojiro Horiguchi
  • Pigment composition
    Patent number: 4704165
    Abstract: There is provided a new pigment composition composed of a pigment and a dispersant wherein the dispersant is a phosphoric ester compound represented by the formula below. ##STR1## (where one or more than one of the three R's are residues of a hydroxy-carboxylic acid and/or hydroxy ester thereof; and one or two of the three R's, in case of being remained, are hydrogen atoms, cations, or residues of an alcohol excluding the above-mentioned residues.
    Type: Grant
    Filed: January 23, 1986
    Date of Patent: November 3, 1987
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Michiei Nakamura, Hitoshi Takeuchi, Tetujiro Takahashi, Minoru Takizawa, Shojiro Horiguchi
  • Pigment composition
    Patent number: 4698099
    Abstract: There is provided a new pigment composition composed of a pigment and a dispersant wherein the dispersant is a phosphoric ester compound represented by the formula below. ##STR1## (where one or more than one of the three R's are hydroxyl-terminated polyester residues obtained by self-polycondensation of a hydroxy-carboxylic acid; and one or two of the three R's, in case of being remained, are hydrogen atoms, cations, or residues of an alcohol excluding the above-mentioned polyesters.
    Type: Grant
    Filed: January 23, 1986
    Date of Patent: October 6, 1987
    Assignee: Dainichiseika Color & Chemicals MFG. Co., Ltd.
    Inventors: Michiei Nakamura, Hitoshi Takeuchi, Tetujiro Takahashi, Minoru Takizawa, Shojiro Horiguchi