Patents by Inventor Robert Keith Sun

Robert Keith Sun 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).

  • Compositions and methods for curing concrete
    Patent number: 6468344
    Abstract: An internal curing composition for concrete includes a glycol and a wax. The glycol is preferably polyethylene glycol and the wax is preferably paraffin wax. When added to concrete, the composition facilitates the curing of concrete to a low porosity, high compressive strength product.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: October 22, 2002
    Assignee: MBT Holding AG
    Inventors: Roland Tak Yong Liang, Robert Keith Sun