Patents by Inventor Andre Marcel Helbling

Andre Marcel Helbling 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).

  • Use of starch dispersions as binder in coating compositions and process for preparing the starch dispersions
    Patent number: 7285586
    Abstract: Coating compositions comprising a pigment and starch dispersion of discrete crosslinked starch particles in an aqueous liquid. The dispersion may be used as coating color for paper. A preferred process of preparing the dispersion of starch particles comprises (a) obtaining a mixture of starch and an aqueous liquid; (b) processing the mixture using shear forces in the presence of a crosslinker in an extruder; and (c) injecting a hydroxylic liquid into the extruder and dispersing the mixture inside the extruder or outside the extruder or both inside and outside the extruder to obtain the dispersion.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: October 23, 2007
    Assignee: Ecosynthetix Inc.
    Inventors: Andre Marcel Helbling, Michael Robert Hills, Friederike Theresia Stollmaier, Thomas Martin Stephan Annen
  • Use of dispersions of crosslinked cationic starch in papermaking
    Patent number: 7160420
    Abstract: Starch dispersions comprising discrete particles of crosslinked cationic starch in an aqueous liquid can be used in papermaking. They can be used as a wet-end additive or in surface coating. The starch dispersions can be prepared by a process comprising: (a) obtaining a mixture of cationic starch and an aqueous liquid, (b) processing the mixture using shear forces in the presence of a crosslinker: and (c) adding and mixing in a hydroxylic liquid to obtain the starch dispersions.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: January 9, 2007
    Assignee: Ecosynthetix Inc.
    Inventors: Andre Marcel Helbling, Michael Robert Hills, Friederike Theresia Stollmaier
  • Use of starch dispersions as binder in coating compositions and process for preparing the starch dispersions
    Patent number: 6825252
    Abstract: Coating compositions comprising a pigment and starch dispersion of discrete crosslinked starch particles in an aqueous liquid. The dispersion may be used as coating color for paper. A preferred process of preparing the dispersion of starch particles comprises (a) obtaining a mixture of starch and an aqueous liquid; (b) processing the mixture using shear forces in the presence of a crosslinker in an extruder; and (c) injecting a hydroxylic liquid into the extruder and dispersing the mixture inside the extruder or outside the extruder or both inside and outside the extruder to obtain the dispersion.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: November 30, 2004
    Assignee: Ecosynthetix Inc.
    Inventors: André Marcel Helbling, Michael Robert Hills, Friederike Theresia Stollmaier, Thomas Martin Stephan Annen
  • Use of starch dispersions as binder in coating compositions and process for preparing the starch dispersions
    Publication number: 20040014844
    Abstract: Coating compositions comprising a pigment and starch dispersion of discrete crosslinked starch particles in an aqueous liquid. The dispersion may be used as coating color for paper. A preferred process of preparing the dispersion of starch particles comprises (a) obtaining a mixture of starch and an aqueous liquid; (b) processing the mixture using shear forces in the presence of a crosslinker in an extruder; and (c) injecting a hydroxylic liquid into the extruder and dispersing the mixture inside the extruder or outside the extruder or both inside and outside the extruder to obtain the dispersion.
    Type: Application
    Filed: July 23, 2003
    Publication date: January 22, 2004
    Inventors: Andre Marcel Helbling, Michael Robert Hills, Friederike Theresia Stollmaier, Thomas Martin Stephan Annen
  • Use of dispersions of crosslinked cationic starch in papermaking
    Publication number: 20040011487
    Abstract: Starch dispersions comprising discrete particles of crosslinked cationic starch in an aqueous liquid can be used in papermaking. They can be used as a wet-end additive or in surface coating. The starch dispersions can be prepared by a process comprising: (a) obtaining a mixture of cationic starch and an aqueous liquid, (b) processing the mixture using shear forces in the presence of a crosslinker: and (c) adding and mixing in a hydroxylic liquid to obtain the starch dispersions.
    Type: Application
    Filed: June 9, 2003
    Publication date: January 22, 2004
    Inventors: Andre Marcel Helbling, Michael Robert Hills, Friederike Theresia Stollmaier