Patents by Inventor Pascal Gerard

Pascal Gerard 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 producing sodium chloride crystals
    Patent number: 6692720
    Abstract: Process for the production of sodium chloride crystals from a sodium chloride brine contaminated by potassium chloride and sulphate ions, according to which a calcium compound (32) is added to the brine (48) to crystallize glauberite (35), which is isolated, the resulting aqueous solution (36) is subjected to evaporation to crystallize sodium chloride (40), which is collected, and the aqueous mother liquor (41) from the crystallization of the sodium chloride is subjected to cooling (42) to crystallize glaserite (45).
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: February 17, 2004
    Assignee: Solvay (Societe Anonyme)
    Inventors: Leon Ninane, Cédric Humblot, Pascal Gerard
  • Apparatus and process with an annular fluorescent tube for detection in a moving mode of surface defects on long metallic products
    Patent number: 5408104
    Abstract: An apparatus and a process for detecting surface defects on moving long metallic products utilizing linear CCD cameras for effecting exposures at successive times t1, t2,t3 . . . Tn. A processing device calculates differences observed for each pixel or assemble of pixels at the successive times and any variations in the differences makes it possible to detect defects and the extent of the defects. The use of thresholds allows for reduction in the background noise and different orientations of the optical axis of the camera permit the detection of different types of defects.
    Type: Grant
    Filed: June 10, 1993
    Date of Patent: April 18, 1995
    Assignee: Valinox
    Inventors: Patrick Gorria, Hafid Jender, Michel Paindavoine, Frederic Truchetet, Pascal Gerard, Phu-An Ngo