Patents by Inventor Sandra M. Griswold

Sandra M. Griswold 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).

  • Apparatus and method for preventing vortexing of a liquid in a separatory funnel
    Patent number: 5478478
    Abstract: The present invention relates to a separatory funnel for preventing vortexing of liquid and identifying an interface between immiscible liquids, said separatory funnel having a baffle plate completely covering the space directly above the outlet opening of the separatory funnel and positioned such that at least a portion of the periphery of the baffle plate is placed directly against the interior wall of the separatory funnel chamber, forming at least one passage for the flow of liquid through the chamber. The present invention also relates to a method of separating a mixture of at least two immiscible liquids that reduces contamination and allows the mixture to form a distinguishable interface so that the liquids can be separated.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: December 26, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Sandra M. Griswold