Patents Assigned to Calstone
  • Apparatus for highly controlled color distribution in mass produced concrete products
    Patent number: 8147233
    Abstract: An apparatus for highly controlled color composition and distribution within the face mix of semi-dry concrete mix paving stones.
    Type: Grant
    Filed: August 10, 2009
    Date of Patent: April 3, 2012
    Assignees: Calstone, Rekers GmbH Maschinen-und Anlagenbau
    Inventors: Matthew K. Morey, James Grossi, Robert Van Baarsel, Arjan Kemp, Bernhard Veerkamp
  • Apparatus for highly controlled color distribution in mass produced concrete products
    Patent number: 7572048
    Abstract: An apparatus for highly controlled color composition and distribution within the face mix of semi-dry concrete mix paving stones is disclosed.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: August 11, 2009
    Assignees: Calstone, Rekers GmbH Maschinen-und Anlagenbau
    Inventors: Matthew K. Morey, James Grossi, Robert van Baarsel, Arjan Kemp, Bernhard Veerkamp
  • Concrete paving stone and concrete paving stones
    Patent number: D486245
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: February 3, 2004
    Assignee: Calstone
    Inventor: Matthew K. Morey