Patents Assigned to Hamburger Color Company
  • Patent number: 6695990
    Abstract: Pigment-containing granules for use in coloring cement. The granules comprise at least one pigment selected from the group consisting of maganese oxide and iron oxide and a binder. The binder is a hydrophilic clay, and is preferably pozzolan.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: February 24, 2004
    Assignee: Hamburger Color Company
    Inventors: Jack Dunnous, William J. Yocum
  • Patent number: 6596072
    Abstract: Pigment-containing granules for use in coloring cement. The granules comprise at least one pigment selected from the group consisting of maganese oxide and iron oxide and a binder. The binder is a hydrophilic clay, and is preferably pozzolan.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: July 22, 2003
    Assignee: Hamburger Color Company
    Inventors: Jack Dunnous, William J. Yocum
  • Patent number: 5025954
    Abstract: Components of a multi-component mixture are individually fed into a measuring container from the bottom through individual precision valves, the component being fluid rises in the container and its level is monitored by ultrasonic means which, in turn, input the measurement to a computer for comparison in memory to determine volume. When the measured level indicates a desired volume is achieved, the feed valve is closed. The contents are then drained from the bottom of the measuring container into a mixing container, and the next component measured in the same way until all components have been measured or the components are sequentially fed and measured until all of the components are present in the tube before discharge. The operation is under computer control which turns on and off the individual precision feed valves and opens a drain valve to drain the contents from the measuring container as well as determining when the proper volume or weight has been achieved.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: June 25, 1991
    Assignee: Hamburger Color Company
    Inventor: Jack Dunnous