Patents by Inventor Christian RAYNAUD

Christian RAYNAUD 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).

  • Composition for surfacing lightly trafficked thoroughfares, allowing plant growth to be limited or even completely suppressed
    Patent number: 12195396
    Abstract: Disclosed is a draining composition for a light-traffic road pavement, including: (a) a first granular layer having a percentage of communicating voids ranging 25-50%, including a binder and a granular mixture of which at least 80% by weight, relative to the total weight of the granular mixture, has a granular size distribution range 4-20 mm, the layer having a thickness suitable for the pavement's mechanical strength; (b) a second granular layer having main lower and upper surfaces, the main lower surface resting directly on the first granular matrix and the main upper surface in direct contact with the air, the second granular layer being a granular mixture not bound by a binder and of which at least 80% by weight, relative to the total weight of the granular mixture, has a granular size distribution range 2-14 mm, the second granular layer having a thickness appropriate for water accumulation.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: January 14, 2025
    Assignee: COLAS
    Inventors: Christophe Priez, Christian Raynaud
  • COMPOSITION FOR SURFACING LIGHTLY TRAFFICKED THOROUGHFARES, ALLOWING PLANT GROWTH TO BE LIMITED OR EVEN COMPLETELY SUPPRESSED
    Publication number: 20220204404
    Abstract: Disclosed is a draining composition for a light-traffic road pavement, including: (a) a first granular layer having a percentage of communicating voids ranging 25-50%, including a binder and a granular mixture of which at least 80% by weight, relative to the total weight of the granular mixture, has a granular size distribution range 4-20 mm, the layer having a thickness suitable for the pavement's mechanical strength; (b) a second granular layer having main lower and upper surfaces, the main lower surface resting directly on the first granular matrix and the main upper surface in direct contact with the air, the second granular layer being a granular mixture not bound by a binder and of which at least 80% by weight, relative to the total weight of the granular mixture, has a granular size distribution range 2-14 mm, the second granular layer having a thickness appropriate for water accumulation.
    Type: Application
    Filed: April 22, 2020
    Publication date: June 30, 2022
    Inventors: Christophe PRIEZ, Christian RAYNAUD