Patents by Inventor David Carl Roberts

David Carl Roberts 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).

  • Porous fibrous sheets of nanofibers
    Patent number: 8415262
    Abstract: Porous fibrous sheets are provided that are useful in end uses requiring microbial barrier properties such as medical packaging and medical gowns and drapes. The porous fibrous sheets may contain nanofibers and wood pulp.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: April 9, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Ioannis V. Bletsos, Joseph Robert Guckert, Mikhail R. Levit, David Carl Roberts
  • Wood Pulp Paper with High Antimicrobial Barrier Level
    Publication number: 20100200184
    Abstract: Wood pulp papers are provided that are useful in end uses requiring microbial barrier properties such as medical packaging, air filters, liquid filters, and other uses and the papers have significantly improved bacterial barrier properties in contrast to wood pulp papers known in the art as measured by Log Reduction Values determined by ASTM F-1608.
    Type: Application
    Filed: April 22, 2010
    Publication date: August 12, 2010
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: MIKHAIL R. LEVIT, Ioannis V. Bletsos, David Carl Roberts