Patents by Inventor Alain Laudet

Alain Laudet 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).

  • Compositions for treating soils, the process for their preparation and the use thereof
    Patent number: 6699322
    Abstract: Composition for treating and stabilizing soils, in particular wet soils, comprising, in the form of a powder having a particle size less than 5 mm, quicklime and/or calcium-based hydraulic binders, as well as a non-aqueous fluid additive capable of agglomerating the finer particles of the composition together.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: March 2, 2004
    Assignee: S.A. Lhoist Recherche et Developpment
    Inventors: Alain Laudet, Etienne Van Tichelen, Daniel Antoine Angel Puiatti, Lucien Marie Louis Joseph Destexhe
  • Compositions for treating soils, method of preparation and use thereof
    Patent number: 6406538
    Abstract: Composition for treating and stabilizing soils, in particular wet soils, comprising, in the form of a powder having a particle size less than 2 mm, quicklime and/or calcium-based hydraulic binders, as well as a non-aqueous fluid additive capable of agglomerating the finer particles of the composition together.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: June 18, 2002
    Assignee: S.A. Lhoist Recherche et Developpment
    Inventors: Alain Laudet, Etienne Van Tichelen, Daniel Antoine Angel Puiatti, Lucien Marie Louis Joseph Destexhe
  • Ca(OH)2 particles
    Patent number: 6322769
    Abstract: The present invention is a Ca(OH)2 particle composition and a method of making the composition, the composition consisting essentially of dried calcium hydroxide particles having a moisture content of less than 2 percent by weight of the total composition, a specific surface area greater than 30 m2/g, a total nitrogen desorption pore volume of at least 0.1 cm3/g, and a CO2 content of less than 2 percent by weight of the total composition, the aforementioned particles being in the form of a mixture comprising first fraction of particles having a size of less than 32 micrometers and a second fraction of particles of a size greater than 32 micrometers, the weight percent of the second fraction ranging from 20 to 50 percent, the aforementioned particles having a nitrogen desorption pore volume consisting of pores with a diameter ranging from 100 to 400 Angstroms.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: November 27, 2001
    Assignee: Lloist Recherche et Developpement S.A.
    Inventors: Henri René Langelin, Régis Poisson, Alain Laudet, Olivier Françoisse