Patents by Inventor Michel Crambes

Michel Crambes 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 compaction-reinforcement-grouting or for decompaction-drainage and for construction of linear works and plane works in the soils
    Patent number: 4832535
    Abstract: Process for soil treatment and successive installations of a plurality of equipments at different respective locations and apparatus for implementing said process, comprising the operations of: drilling the soil by driving a tubular stem tool having an axis and a predetermined overall diameter around its axis, introducing one equipment inside the tubular stem tool, removing from the soil said tubular stem tool while leaving the equipment within the soil, modifying the soil compacity around the equipment by mechanical action during at least part of the removal of the tubular stem tool and repeating the above operations with remaining equipments at other locations.
    Type: Grant
    Filed: August 7, 1986
    Date of Patent: May 23, 1989
    Inventor: Michel Crambes
  • Process and apparatus for the detection of changes of composition in a medium with the aid of ultrasound
    Patent number: 4565088
    Abstract: Process and apparatus for detecting and locating a change of composition in a medium, which consists in determining the speed of transmission of an ultrasonic wave through a layer or column of the medium; this determination is effected at a plurality of locations or levels and those of the locations or levels are noted which correspond to changes in the speed of transmission of the wave.
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: January 21, 1986
    Assignee: Elf France
    Inventor: Michel Crambes
  • Method for the inhibition of corrosion of ferrous metals in an aqueous medium
    Patent number: 4120655
    Abstract: The method for the inhibition of corrosion of ferrous metals in an aqueous medium consists in adding to the aqueous medium 10 to 2000 ppm of a mixture constituted by a water-soluble complex salt of a metal of groups II to VIII of the periodic table and of a hydroxycarboxylic acid and by a phosphoric ester of alkanolamine.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: October 17, 1978
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Michel Crambes, Henri Grangette, Pierre Pivette, Philippe Haicour