Patents by Inventor Stephane Verdier

Stephane Verdier 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).

  • Method for manufacturing a superhydrophobic surface, surface so obtained and use of it
    Patent number: 9999901
    Abstract: The invention is directed to a method for manufacturing a hydrophobic or superhydrophobic surface comprising the steps of: (a) providing a substrate with a surface roughness Ra between 0.1 and 1.0 ?m and (b) exposing the substrate to a filamentary atmospheric pressure dielectric barrier discharge plasma which is fed by a reaction gas and siloxane-forming material in order to form a superhydrophobic siloxane layer over at least a portion of the surface of the substrate. Step (b) is operated with an electrical excitation frequency of 15,000 Hz to 35,000 Hz and a power density between 0.5 to 10 W·cm?2. The siloxane layer produced in step (b) shows thereby a micro-structure and a nano-structure with droplet “sticking” properties (high water sliding angle).
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: June 19, 2018
    Assignee: Luxembourg Institute of Science And Technology (LIST)
    Inventors: Nicolas Boscher, David Duday, Patrick Choquet, Stephane Verdier
  • Method For Manufacturing A Superhydrophobic Surface, Surface So Obtained And Use Of It
    Publication number: 20150273522
    Abstract: The invention is directed to a method for manufacturing a hydrophobic or superhydrophobic surface comprising the steps of: (a) providing a substrate with a surface roughness Ra between 0.1 and 1.0 ?m and (b) exposing the substrate to a filamentary atmospheric pressure dielectric barrier discharge plasma which is fed by a reaction gas and siloxane-forming material in order to form a superhydrophobic siloxane layer over at least a portion of the surface of the substrate. Step (b) is operated with an electrical excitation frequency of 15,000 Hz to 35,000 Hz and a power density between 0.5 to 10 W·cm?2. The siloxane layer produced in step (b) shows thereby a micro-structure and a nano-structure with droplet “sticking” properties (high water sliding angle).
    Type: Application
    Filed: October 2, 2013
    Publication date: October 1, 2015
    Inventors: Nicolas Boscher, David Duday, Patrick Choquet, Stephane Verdier