Patents by Inventor Hassan Arabghani

Hassan Arabghani 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 removing catalyst impurities from polyols
    Patent number: 5254227
    Abstract: A process for removing an ionic impurity from an impure substantially non-aqueous liquid passes the impure non-aqueous liquid through at least one ion exchange compartment containing an ion exchange medium. The ion exchange compartment is separated from an anode compartment and a cathode compartment by ion exchange membranes, where the ion exchange membranes and ion exchange medium having functional groups of the opposite charge as that of the ionic impurity. An electric current is conducted across the ion exchange compartment substantially transverse to the direction of flow of the impure non-aqueous liquid, and transporting the ionic impurity through an ion exchange membrane to separate the ionic impurity from the non-aqueous liquid.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: October 19, 1993
    Assignee: Olin Corporation
    Inventors: David W. Cawlfield, Jerry J. Kaczur, Hassan Arabghani