Patents Assigned to M. Hamburger & Sons, Inc.
  • Cement coloring composition and method of producing same
    Patent number: 4204876
    Abstract: Thixotropic compositions for coloring cement or concrete or similar products comprise particulate pigment particles (about 20-80% by weight), at least one stabilizer (about 0.4-15%), a dispersent (about 0.1-3.0%) and water (about 12-77%). Methods of making these compositions are also explained.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: May 27, 1980
    Assignee: M. Hamburger & Sons, Inc.
    Inventor: Alan P. Bowden