Patents by Inventor John Caraway

John Caraway 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).

  • Selective Filtration of Cigarette Smoke using Chitosan Derivatives
    Publication number: 20070295345
    Abstract: A smoking article filter having a porous resin with a high surface area to mass ratio comprised of a chitosan derivative. Preferred embodiments include chitosan cross-linked with glutaraldehyde and chitosan cross-linked with glyoxal. The chitosan derivative provides for the selective filtration of cigarette smoke, particularly for the removal of aldehydes, hydrogen cyanide, heavy metals and carbonyls.
    Type: Application
    Filed: September 12, 2007
    Publication date: December 27, 2007
    Inventors: John Caraway, Thaddeus Jackson
  • Selective filtration of cigarette smoke using chitosan derivatives
    Publication number: 20050247323
    Abstract: A smoking article filter having a porous resin with a high surface area to mass ratio comprised of a chitosan derivative. Preferred embodiments include chitosan cross-linked with glutaraldehyde and chitosan cross-linked with glyoxal. The chitosan derivative provides for the selective filtration of cigarette smoke, particularly for the removal of aldehydes, hydrogen cyanide, heavy metals and carbonyls.
    Type: Application
    Filed: May 10, 2004
    Publication date: November 10, 2005
    Inventor: John Caraway
  • Horizontal drilling machine
    Patent number: 5810101
    Abstract: A digger from a unit for digging utility pole holes is encased in an elongated box. The box has an attachment thereon for attachment to the carrying arm of a backhoe in place of the backhoe bucket. A 90.degree. attachment provides versatility. The digger is thus capable of digging horizontal tunnels for laying one underground line under another underground line.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: September 22, 1998
    Assignee: Engineering Crossing Systems, (Partnership)
    Inventors: John Caraway, Jr., George McMillan