Patents by Inventor David E. Grahan

David E. Grahan 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).

  • Crosslinked polymeric substrates methods of preparation and end use applications of the substrates
    Patent number: 9828404
    Abstract: A composition of matter wherein the composition comprises a siliceous substrate having silanols on the surface and a polymer selected from the group consisting essentially of a water soluble polymer, a water soluble copolymer, an alcohol soluble polymer, an alcohol soluble copolymer, and combinations of such polymers, wherein the polymer is chemically bonded to the siliceous substrate by a silane linking material having the general formula O3/2SiQY that is derived from an alkoxy-functional silane having the general formula (RO)3SiQX and processes for preparing the crosslinked polymer that is chemically bonded to the surface of the siliceous substrate.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: November 28, 2017
    Inventors: Douglas H. Adamson, Warde T. Collins, David E. Grahan, Robert M. Minnini