Patents Assigned to Excelstone International, Inc.
  • Patent number: 5789032
    Abstract: There is provided coated substrate where a filled flowable polyester composition is cured in contact with and bonded to the substrate. The composition contains 20 to 40% resin and in excess of 50% filler, the balance being welling agent, air release agent and catalyst.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: August 4, 1998
    Assignee: Excelstone International, Inc.
    Inventors: Hai Le Cong, Arthur Jack Grigler
  • Patent number: 5683638
    Abstract: A process for fabricating a seamless flush mounted countertop sink, which includes the steps of constructing a sink bowl (22) that has an outwardly extending peripheral top flange (26). The sink bowl is then captivated upside-down on a flat mold (34) and uncured filled polymer (40) is poured on the mold and flattened to a level above the flange, creating an integral countertop sink (44). The polymer is vibrated and cured. In the preferred embodiment, the top surface of the countertop is sanded smooth and, in the second embodiment, a clear gelcoat is added prior to pouring, creating a glossy finish. The third embodiment spaces the sink bowl flange within the thickness of the countertop (42) and is finished by either sanding, or a previous gelcoat is added, as above.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: November 4, 1997
    Assignee: Excelstone International, Inc.
    Inventors: Arthur J. Crigler, Hai Lecong