Patents by Inventor Luc Navascues

Luc Navascues 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).

  • Process for the preparation of dense bituminous mixes with emulsion, and emulsion for achieving same
    Patent number: 6136082
    Abstract: Coating is carried out with the aid of an emulsion which consists of the mixture of a fast-breaking emulsion and a slow-breaking emulsion. It is advantageous to take a soft bitumen emulsion as fast emulsion and a hard bitumen emulsion as slow emulsion.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: October 24, 2000
    Assignee: CECA S.A.
    Inventors: Gilles Barreto, Lionel Grampre, Luc Navascues
  • Paving composition/building composition including a film forming bitumen in-water mixed emulsion
    Patent number: 5788756
    Abstract: Film-forming bitumen-in-water mixed emulsions comprising intimate immixture of (i) an oil-in-water emulsion of a hard bituminous material and (ii) an oil-in-water emulsion of a soft bituminous material, are well suited for the production of storage-stable coated particulates, notably cold dense building and paving materials such as aggregate and gravel, useful for the construction of, e.g., road and highway surfaces via compaction thereof.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: August 4, 1998
    Assignee: CECA S.A.
    Inventors: Pascal Cheneviere, Jean-Claude Fabre, Luc Navascues
  • Granular fertilizers
    Patent number: 5704962
    Abstract: Compositions for the treatment of granular fertilizers containing secondary C.sub.14 -C.sub.20 dialkyl monoamines or their mixture with primary monoamines which are also C.sub.14 -C.sub.20 have the advantage of limiting both the solidification and the secondary production of dust on storage. The process is particularly advantageous in the treatment of NPK-type fertilizers.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: January 6, 1998
    Assignee: Ceca S. A.
    Inventor: Luc Navascues
  • Novel n-substituted polyamide type polymers, their method of preparation and their use as additives for crude petroleum oils
    Patent number: 4870137
    Abstract: Polymer compounds resulting from the condensation of polyacrylic acids having a molecular weight comprised between 10,000 and 2,000,000 and alkylamines containing at least 12 carbon atoms in their chain. These products constitute paraffin deposit inhibitors and pour point depressants for crude petroleum oils.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: September 26, 1989
    Assignee: Societe Nationale ELF Aquitaine
    Inventors: Denis Lopez, Paul Maldonado, Gilles Meunier, Luc Navascues