Patents by Inventor David L. Hardman, Jr.

David L. Hardman, 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).

  • Cationic surfactants
    Patent number: 7608710
    Abstract: A surfactant comprising a polyether segment including at least one pendant alkoxyfluoroalkyl group, and a cationic substituent defined by one of the formulae: or the substituted derivatives thereof.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: October 27, 2009
    Assignee: OMNOVA Solutions Inc.
    Inventors: Charles M. Kausch, Yongsin Kim, Richard R. Thomas, David L. Hardman, Jr.
  • Polyether Block Copolymers
    Publication number: 20080312382
    Abstract: A block copolymer comprising a first polyether block including a pendant alkoxyfluoroalkyl group, and a second polyether block that is substantially devoid of pendant alkoxyfluoroalkyl groups and includes at least two distinct units.
    Type: Application
    Filed: December 13, 2005
    Publication date: December 18, 2008
    Inventors: Charles M. Kausch, Yongsin Kim, Richard R. Thomas, David L. Hardman, JR., Joseph Twitchell