Patents by Inventor Jeroen Johannes Gerardus Van Soest

Jeroen Johannes Gerardus Van Soest 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).

  • Patent number: 6755915
    Abstract: A method for the preparation of starch particles in a two-phase system comprises at least the following steps: a) a preparation of a first phase comprising a dispersion of starch in water; b) preparation of a dispersion or emulsion of the first phase in a second liquid phase, with the proviso that the second phase is not water; c) cross-linking of the starch present in the first phase; d) separating the starch particles thus formed. According to a first aspect of the invention the second phase consists of a hydrophobic liquid and step b) consists in forming an oil-in-water emulsion, which is then inverted to a water-in-oil emulsion. According to a second aspect of the invention, the second phase consists of a water-miscible non-solvent for starch. Starch particles of very small particles size can be produced in a controlled manner by means of this method.
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: June 29, 2004
    Assignee: Ecosynthetix Inc.
    Inventors: Jeroen Johannes Gerardus Van Soest, Frank Hubertus Maria Stappers, Renée Josie Gide Van Schijndel, Kornelis Fester Gottlieb, Herman Feil
  • Patent number: 6340527
    Abstract: Microspheres having a particle size of 50 nm to 1 nm and a polydispersity of less than 40%, consisting of a chemically cross-linked starch shell containing an active ingredient, are obtained by preparing an oil-in-water emulsion of the active ingredient in a hydrophobic phase and starch or a dispersion of a solid active ingredient and starch in water, incorporating the oil-in-water emulsion or solid dispersion in an outer hydrophobic phase, particles of the oil-in-water emulsion or solid dispersion being formed in the outer hydrophobic phase, cross-linking the starch or derivative thereof and removing the outer hydrophobic phase if desired.
    Type: Grant
    Filed: January 3, 2000
    Date of Patent: January 22, 2002
    Assignee: ATO B.V.
    Inventors: Jeroen Johannes Gerardus Van Soest, Renée Josie Gide Van Schijndel, Kornelis Fester Gotlieb