Patents by Inventor Barbara Stefke

Barbara Stefke 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).

  • Renewable binder for nonwoven materials
    Patent number: 7893154
    Abstract: A formaldehyde-free curable aqueous composition comprising an adduct of (a) carbohydrate polymer and (b) a multi-functional crosslinking agent such as a polybasic acid may be used as a binder for non-woven products such as fiberglass insulation.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: February 22, 2011
    Assignee: Dynea Oy
    Inventors: Hendrikus W. G. Van Herwijnen, Elena Pisanova, Barbara Stefke
  • Renewable binder for nonwoven materials
    Publication number: 20080108741
    Abstract: A formaldehyde-free curable aqueous composition comprising an adduct of (a) carbohydrate polymer and (b) a multi-functional crosslinking agent such as a polybasic acid may be used as a binder for non-woven products such as fiberglass insulation.
    Type: Application
    Filed: November 1, 2007
    Publication date: May 8, 2008
    Applicant: Dynea Oy
    Inventors: Hendrikus W.G. Van Herwijnen, Elena Pisanova, Barbara Stefke