Patents by Inventor John C. Eiland

John C. Eiland 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).

  • Apparatus and method for adding pigmentation to concrete mix
    Patent number: 7270469
    Abstract: A pigmentation dispenser utilizes a hopper having two rotors therein, a first rotor above a second rotor. The second rotor moves the pigmentation material through an outlet opening and deposits it on a conveyor containing a concrete mix. The concrete mix and pigmentation material are then moved to a mixer which mixes them together. A cleanout is also in communication with the hopper and the second rotor can be reversed to move the pigmentation toward the cleanout.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: September 18, 2007
    Assignee: Cemen-Tech, Inc.
    Inventors: Leland Goode, Brian D. Lowe, Steven R. Merrill, John C. Eiland