Patents by Inventor David Keith Graham, JR.

David Keith Graham, JR. 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).

  • Nanowebs
    Patent number: 8697587
    Abstract: A nonwoven web of fibers that have a number average diameter of less than 1 micron. The web can have a Poisson Ratio of less than about 0.8, a solidity of at least about 20%, a basis weight of at least about 1 gsm, and a thickness of at least 1 micrometer.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: April 15, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Pankaj Arora, Guanghui Chen, Simon Frisk, David Keith Graham, Jr., Robert Anthony Marin, Hageun Suh
  • NANOWEBS
    Publication number: 20090261035
    Abstract: A nonwoven web of fibers that have a number average diameter of less than 1 micron. The web can have a Poisson Ratio of less than about 0.8, a solidity of at least about 20%, a basis weight of at least about 1 gsm, and a thickness of at least 1 micrometer.
    Type: Application
    Filed: July 1, 2009
    Publication date: October 22, 2009
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: PANKAJ ARORA, Guanghui Chen, Simon Frisk, David Keith Graham, JR., Robert Anthony Marin, Hageun Suh