Patents by Inventor David Puryear

David Puryear 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).

  • Novel mineral filler composition
    Publication number: 20070261337
    Abstract: A composition comprised of asphalt and filler, wherein said filler is comprised of particles that comprise an inorganic core and a coating disposed on said core, and wherein at least about 60 weight percent of said particles are smaller than about 212 microns.
    Type: Application
    Filed: April 18, 2006
    Publication date: November 15, 2007
    Inventors: Robert Whitaker, Allen Smith, David Puryear