Patents by Inventor Annie F. Legrand

Annie F. Legrand 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).

  • Patent number: 5549846
    Abstract: The invention relates to a method for the continuous preparation of vanadium pentoxide gel and an apparatus for implementing the method.According to the present invention, the vanadium pentoxide is raised to a temperature at least 100.degree. C. higher than its melting point; it is poured continuously into a quenching reactor 2 containing distilled water at ambient temperature; the gel obtained flows by overflowing to an ageing reactor 4, the contents of which are recirculated to the quenching reactor; the concentration of the gel contained in the ageing reactor 4 is measured continuously so as to adjust continuously the quantity of distilled water to be added to the quenching reactor 2; the contents of the ageing reactor are evacuated into a storage drum 9. Application to the manufacture of vanadium pentoxide for anti-static applications.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: August 27, 1996
    Assignee: Eastman Kodak Company
    Inventors: Jean P. Tixier, Annie F. Legrand