Patents by Inventor Wilhelm Barthlott

Wilhelm Barthlott 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: 11933009
    Abstract: The invention relates to a device for taking up oil from a water surface, comprising a container for receiving the oil and an oil-transporting means, wherein a portion of the oil-transporting means can be brought into fluid communication with the water surface and another portion of the oil-transporting means is disposed within the container, wherein the oil can be transported into the container via the oil-transporting means, wherein the oil-transporting means is formed from a hydrophobic fabric, the surface of which comprises filament-shaped and/or grid-like structures which are designed in such a way that they retain a gas layer on the surface of the hydrophobic fabric under water. The invention further relates to a corresponding method for taking up oil from a water surface.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: March 19, 2024
    Assignee: RHEINISCHE FRIEDRICH-WILHELMS-UNIVERSITÄT BONN
    Inventors: Wilhelm Barthlott, Markus Moosmann, Matthias Mail
  • Publication number: 20210238818
    Abstract: The invention relates to a device for taking up oil from a water surface, comprising a container for receiving the oil and an oil-transporting means, wherein a portion of the oil-transporting means can be brought into fluid communication with the water surface and another portion of the oil-transporting means is disposed within the container, wherein the oil can be transported into the container via the oil-transporting means, wherein the oil-transporting means is formed from a hydrophobic fabric, the surface of which comprises filament-shaped and/or grid-like structures which are designed in such a way that they retain a gas layer on the surface of the hydrophobic fabric under water. The invention further relates to a corresponding method for taking up oil from a water surface.
    Type: Application
    Filed: July 25, 2019
    Publication date: August 5, 2021
    Applicant: RHEINISCHE FRIEDRICH-WILHELMS-UNIVERSITÄT BONN
    Inventors: Wilhelm BARTHLOTT, Markus MOOSMANN, Matthias MAIL
  • Publication number: 20180362118
    Abstract: Device mountable on a surface (10), the device comprising a spacer system (12, 16, 20, 22) and a grid structure (2) which grid structure (2) is attached in spaced relation to the surface (10) by means of the spacer system (12, 16, 20, 22), wherein the distance between the surface (10) and the grid structure (2) is in a range from >0.1 ?m to <10 mm, wherein the grid structure (2) forms meshes of a mesh size in a range from >0.5 ?m to <8 mm, and wherein the surface of the grid structure (2) is at least partially amphiphobic. Method of maintaining a gas or air layer on a surface when the surface is immersed in a liquid or water comprising such device, and uses thereof.
    Type: Application
    Filed: December 21, 2016
    Publication date: December 20, 2018
    Applicant: RHEINISCHE FRIEDRICH-WILHELMS UNIVERSITÄT BONN
    Inventors: Wilhelm Barthlott, Birte Böhnlein, Matthias Mail
  • Publication number: 20110070421
    Abstract: An object having a surface that has: filaments having a length of from 30 to 6000 ?m, a diameter to length ratio of from 1:10 to 1:20, and are bound to the surface with at least one front face thereof; wherein the distance between two neighboring filaments on the surface is such that the ratio of such distance to the length of the filaments is from 1:3 to 1:10; the filaments have an elasticity of from 104 to 1010 N/m2; the surface of the filament is at least partially hydrophobic, so that the contact angle between a filament and water is greater than 100°, characterized in that the filaments are structurally or chemically anisotropic.
    Type: Application
    Filed: January 30, 2009
    Publication date: March 24, 2011
    Applicant: Rheinische Friedrich-Wilhelms-Universitat Bonn
    Inventors: Zdenek Cerman, Boris F. Striffler, Sabine Wiersch, Wilhelm Barthlott
  • Publication number: 20090304983
    Abstract: An object having a surface that has: filaments having a length of from 30 to 6000 ?m, a diameter to length ratio of from 1:10 to 1:20, and are bound to the surface with at least one front face thereof; wherein the distance between two neighboring filaments on the surface is such that the ratio of such distance to the length of the filaments is from 1:3 to 1:10; the filaments have an elasticity of from 104 to 1010 N/m2; the surface of the filament is hydrophobic, so that the contact angle between a filament and water is greater than 100°.
    Type: Application
    Filed: March 1, 2007
    Publication date: December 10, 2009
    Inventors: Wilhelm Barthlott, Zdenek Cerman, Andreas Scherrieble, Thomas Stegmaier, Boris Striffler, Volkmar Von Arnim
  • Publication number: 20070098957
    Abstract: The method for the preparation of self-cleaning surfaces having protrusions and recesses, wherein the distance between said protrusions is in a range of from 0.1 to 200 ?m and the height of said protrusions is in a range of from 0.1 to 100 ?m is performed by applying a solution, dispersion or emulsion containing a hydrophobic material which forms a self-cleaning surface by self-organization when the solvent is evaporated, followed by drying, wherein the material applied can be removed with detergents.
    Type: Application
    Filed: October 23, 2006
    Publication date: May 3, 2007
    Inventors: Wilhelm Barthlott, Christoph Neinhuis
  • Publication number: 20050136217
    Abstract: The method for the preparation of self-cleaning surfaces having protrusions and recesses, wherein the distance between said protrusions is in a range of from 0.1 to 200 ?m and the height of said protrusions is in a range of from 0.1 to 100 ?m is performed by applying a solution, dispersion or emulsion containing a hydrophobic material which forms a self-cleaning surface by self-organization when the solvent is evaporated, followed by drying, wherein the material applied can be removed with detergents.
    Type: Application
    Filed: February 2, 2005
    Publication date: June 23, 2005
    Inventors: Wilhelm Barthlott, Christoph Neinhuis
  • Patent number: 6660363
    Abstract: The self-cleaning surfaces of objects have an artificial surface structure of elevations and depressions wherein the distances between said elevations are in the range of from 5 to 200 &mgr;m, and the heights of said elevations are in the range of from 5 to 100 &mgr;m, and at least said elevations consist of hydrophobic polymers or permanently hydrophobized materials, and said elevations cannot be detached by water or by water containing detergents.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: December 9, 2003
    Inventor: Wilhelm Barthlott