Patents by Inventor Willem Drost

Willem Drost 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).

  • Publication number: 20080064793
    Abstract: The invention provides a fibre-reinforced polymer composite comprising fibres derived from mammalian hair and/or feathers, wherein the fibres have been prepared by means of a process comprising the steps of: (a) subjecting mammalian hair and/or feathers to an oxidation treatment in which the hair and/or feathers (is) are contacted with a solution, which comprises a bleaching agent; (b) separating the oxidised hair and/or feathers from the solution; and (c) drying the separated hair and/or feathers. The invention further provides processes to prepare said composite, a process to prepare said fibres, and shaped polymer products comprising said composite.
    Type: Application
    Filed: June 9, 2005
    Publication date: March 13, 2008
    Inventors: Jan de Vlieger, Theodoor Slaghek, Theodorus Kock, Eric Craenmehr, Willem Drost, Mario van Wandelen
  • Publication number: 20070158038
    Abstract: The invention relates to the use of a particulate material derived from mammalian hair in the preparation of a paper or paperboard product, which particulate material has been prepared by means of a process, which comprises the following steps: (a) subjecting mammalian hair to an oxidation treatment in which the hair is contacted with a solution, which comprises a bleaching agent; (b) separating the oxidised hair from the solution; (c) drying the separated hair; and (d) subjecting the dried hair to a treatment in which the hair is formed into a particulate material having an average particle size in the range of from 0.5 to 4 mm. The invention further relates to a paper or paperboard product, or paper pulp comprising said particulate material.
    Type: Application
    Filed: February 18, 2005
    Publication date: July 12, 2007
    Inventors: Theodoor Slaghek, Mario van Wandelen, Willem Drost, Dario Lo Cascio, Remco van Willige, Willem Huijser
  • Publication number: 20070151686
    Abstract: The invention relates to the use of a protein hydrolysate derived from keratin-containing material as an additive in the wet-end of a papermaking process. The invention further relates to a process for making a paper pulp or paper product, and a paper pulp or a paper product comprising protein hydrolysate derived from keratin-containing material.
    Type: Application
    Filed: February 18, 2005
    Publication date: July 5, 2007
    Inventors: Theodoor Slaghek, Mario Van Wandelen, Willem Drost, Dario Lo Cascio, Remco Van Willige
  • Publication number: 20070039613
    Abstract: A method for manufacturing insulating and/or fire-resistant material, wherein the potato steam peels are subjected to a treatment for recovering a cork fraction, at least a non-calorific part, from those peels, while the insulating and/or fireresistant material is manufactured at least from the recovered cork fraction and a binding agent. The invention further provides insulating and/or fire-resistant material containing at least a cork fraction recovered from potato steam peels. Further, the invention provides a construction element, provided with such insulating and/or fire-resistant material.
    Type: Application
    Filed: June 3, 2004
    Publication date: February 22, 2007
    Inventors: Theodoor Slaghek, Willem Drost, Peter Fraanje, Jan Jetten
  • Publication number: 20050279019
    Abstract: The invention relates to a soil cover, a method for preventing weed growth by using a soil cover, the use of potato steam peels and the use of a cork fraction of potato steam peels for preventing weed growth. A soil cover according to the invention comprises potato steam peels or a part, derivative or analogue thereof. In a different embodiment, a soil cover according to the invention comprises a cork fraction of potato steam peels or a part, derivative or analogue thereof.
    Type: Application
    Filed: November 18, 2003
    Publication date: December 22, 2005
    Inventors: Theodoor Slanghek, Willem Drost