Patents by Inventor Andre Lambelin

Andre Lambelin 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 and device to measure the asphaltene content of petroleum products
    Patent number: 4238451
    Abstract: An apparatus to measure the asphaltene content of petroleum products where a precipitation evaporator for the sample is surmounted by a condensing unit. Immediately below the precipitation evaporator is a filtering unit with a rinsing vapor inlet line for conveying washing liquid from a balloon-flask evaporator. The precipitation evaporator is also equipped with an adjustable flap for preventing fluid from passing to the filtering unit.
    Type: Grant
    Filed: April 3, 1979
    Date of Patent: December 9, 1980
    Assignee: Elf Union
    Inventors: Andre Ciais, Andre Lambelin