Patents by Inventor Garrett N. Smith

Garrett N. Smith 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).

  • Water-resistant wound paperboard tube
    Patent number: 7842362
    Abstract: A wound paperboard tube having enhanced burst strength in high-moisture conditions up to and including complete and prolonged submersion in liquid water comprises a plurality of paperboard plies formed from a pulp comprising papermaking furnish and an effective amount of a size such that the paperboard plies have reduced moisture add-on when submerged in water, relative to paperboard plies formed from a pulp comprising the identical furnish but without the size. The plies are wound one upon another about an axis of the tube and adhered together with a water-resistant adhesive comprising a polyvinyl composition containing a cross-linking agent for inducing cross-linking of the adhesive.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: November 30, 2010
    Assignee: Sonoco Development, Inc.
    Inventors: Tom T. H. Kim, Charles W. Lounsbury, Jr., David E. Rhodes, Garrett N. Smith, Johannes Wim van de Camp
  • Impregnated fibrous laminates
    Patent number: 4670311
    Abstract: An improved fibrous laminate is formed by impregnating a paper-like material with a substantially anhydrous emulsifiable methylene diisocyanate (EMDI) and allowing the EMDI to cure at ambient or higher temperature. EMDI-impregnated laminates, such as tubes and cones show improved strength compared with prior art products and are especially resistant to water.
    Type: Grant
    Filed: January 9, 1986
    Date of Patent: June 2, 1987
    Assignee: Sonoco Products Company
    Inventor: Garrett N. Smith
  • Impregnated fibrous laminates
    Patent number: 4582735
    Abstract: An improved fibrous laminate is formed by impregnating a paper-like material with a substantially anhydrous emulsifiable methylene diisocyanate (EMDI) and allowing the EMDI to cure at ambient or higher temperature. EMDI-impregnated laminates, such as tubes and cones show improved strength compared with prior art products and are especially resistant to water.
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: April 15, 1986
    Assignee: Sonoco Products Company
    Inventor: Garrett N. Smith