Patents by Inventor Henk Westerhof

Henk Westerhof 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).

  • Poly(lactic acid)-containing compositions for use in imparting oil, grease, or water resistance to paper
    Patent number: 8137818
    Abstract: Herein disclosed is a composition containing from about 5 weight parts to about 50 weight parts of a branched polylactic acid; from about 50 weight parts to about 95 weight parts of water; and from about 0.1 weight parts to about 1 weight part of a first surfactant. The composition can be coated onto a substrate containing paper or paperboard and having a first surface and a second surface, to form a paper product having oil, grease, and moisture resistance.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: March 20, 2012
    Assignee: Tate & Lyle Ingredients Americas LLC
    Inventors: Michael D. Harrison, Geoffrey A. R. Nobes, Penelope A. Patton, Shiji Shen, Henk Westerhof
  • Environmentally degradable polymeric compounds, their preparation and use as hot melt adhesive
    Patent number: 7868101
    Abstract: The invention is directed to a method for preparing an environmentally degradable polymeric compound as well as to such a compound per se and to its use. A compound of the present invention includes a polycondensated lactic acid containing polymer, having a molecular weight (Mw) of from 500 to 50,000 g/mol, to which a flexibilizing aliphatic polyester having a molecular weight of from 500 to 50,000 g/mol is coupled. The amount of lactic acid including groups in the polymeric compound ranges from 50 to 99% and the amount of flexibilizing polyester groups ranges from 1 to 50%.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: January 11, 2011
    Assignee: Tate & Lyle Public Limited Company
    Inventors: David Neal Lewis, Gerrit Schutte, Henk Westerhof, Jane Janssen, William E. Kelly
  • Poly(Lactic Acid)-Containing Compositions for Use in Imparting Oil, Grease, or Water Resistance to Paper
    Publication number: 20100021751
    Abstract: Herein disclosed is a composition containing from about 5 weight parts to about 50 weight parts of a branched polylactic acid; from about 50 weight parts to about 95 weight parts of water; and from about 0.1 weight parts to about 1 weight part of a first surfactant. The composition can be coated onto a substrate containing paper or paperboard and having a first surface and a second surface, to form a paper product having oil, grease, and moisture resistance.
    Type: Application
    Filed: July 21, 2009
    Publication date: January 28, 2010
    Inventors: Michael D. Harrison, Geoffrey A.R. Nobes, Penelope Patton, Shiji Shen, Henk Westerhof
  • Environmentally degradable polymeric compounds their preparation and use as hot melt adhesive
    Patent number: 7465770
    Abstract: The invention is directed to a method for preparing an environmentally degradable polymeric compound as well as to such a compound per se and to its use. A compound of the present invention includes a polycondensated lactic acid containing polymer, having a molecular weight (Mw) of from 500 to 50,000 g/mol, to which a flexibilizing aliphatic polyester having a molecular weight of from 500 to 50,000 g/mol is coupled. The amount of lactic acid including groups in the polymeric compound ranges from 50 to 99% and the amount of flexibilizing polyester groups ranges from 1 to 50%.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: December 16, 2008
    Assignee: Tate & Lyle Public Limited Company
    Inventors: David Neal Lewis, Gerrit Schutte, Henk Westerhof, Jane Janssen, William E. Kelly
  • Environmentally Degradable Polymeric Compounds, Their Preparation and Use as Hot Melt Adhesive
    Publication number: 20070243374
    Abstract: The invention is directed to a method for preparing an environmentally degradable polymeric compound as well as to such a compound per se and to its use. A compound of the present invention includes a polycondensated lactic acid containing polymer, having a molecular weight (Mw) of from 500 to 50,000 g/mol, to which a flexibilizing aliphatic polyester having a molecular weight of from 500 to 50,000 g/mol is coupled. The amount of lactic acid including groups in the polymeric compound ranges from 50 to 99% and the amount of flexibilizing polyester groups ranges from 1 to 50%.
    Type: Application
    Filed: May 24, 2007
    Publication date: October 18, 2007
    Inventors: David Lewis, Gerrit Schutte, Henk Westerhof, Jane Janssen, William Kelly
  • Environmentally degradable polymeric compounds their preparation and use as hot melt adhesive
    Publication number: 20040143072
    Abstract: The invention is directed to a method for preparing an environmentally degradable polymeric compound as well as to such a compound per se and to its use. A compound of the present invention includes a polycondensated lactic acid containing polymer, having a molecular weight (Mw) of from 500 to 50,000 g/mol, to which a flexibilizing aliphatic polyester having a molecular weight of from 500 to 50,000 g/mol is coupled. The amount of lactic acid including groups in the polymeric compound ranges from 50 to 99% and the amount of flexibilizing polyester groups ranges from 1 to 50%.
    Type: Application
    Filed: February 27, 2004
    Publication date: July 22, 2004
    Inventors: David Neal Lewis, Gerrit Schutte, Henk Westerhof, Jane Janssen, William E. Kelly