Patents by Inventor Willem Cornelis Drost

Willem Cornelis 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).

  • Cover layers to prevent weed growth
    Patent number: 7805883
    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: Grant
    Filed: August 27, 2009
    Date of Patent: October 5, 2010
    Assignee: Nederlandse Organisatie Voortoegepast-Natuurwetenschappelijk Onderzoek Tno
    Inventors: Theodoor Maximiliaan Slaghek, Willem Cornelis Drost
  • COVER LAYERS TO PREVENT WEED GROWTH
    Publication number: 20100056461
    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: August 27, 2009
    Publication date: March 4, 2010
    Applicant: Nederlandse Organisatie voor toegepast- Natuurwetenschappelijk Onderzoek TNO
    Inventors: Theodoor Maximilaan SLAGHEK, Willem Cornelis DROST
  • Cover layers to prevent weed growth
    Patent number: 7597753
    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: Grant
    Filed: November 18, 2003
    Date of Patent: October 6, 2009
    Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno
    Inventors: Theodoor Maximilaan Slaghek, Willem Cornelis Drost
  • Method for manufacturing insulating and/or fire-resistant material, and such insulating and/or fire-resistant material and a construction element provided with such insulating and/or fire-resistant material
    Patent number: 7531245
    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 fire resistant 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: Grant
    Filed: June 3, 2004
    Date of Patent: May 12, 2009
    Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO
    Inventors: Theodoor Maximiliaan Slaghek, Willem Cornelis Drost, Peter Johannes Fraanje, Jan Matthijs Jetten