Patents by Inventor Carl Andrew Renner

Carl Andrew Renner 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).

  • Separation of amine from a phenolic compound
    Patent number: 7049471
    Abstract: A process comprises contacting a product mixture with a base, optionally in the presence of a polyhydric alcohol, to produce a base-treated mixture and distilling the base-treated mixture in which the product mixture comprises an aromatic amine and a phenolic compound.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: May 23, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Carl Andrew Renner, Richard Frank Dubnansky, Freddison A. Parsons, Richard T. Stimek, Zhihong Wu
  • Production of alcoholates
    Patent number: 6372947
    Abstract: A process that can be used for producing an alkali metal alcoholate such as sodium alcoholate or for removing a residual mixture containing alkali metal and alkaline earth metal from a vessel such as, for example, a tank car or storage tank used in manufacturing an alkali metal is disclosed. The process comprises contacting a mixture, which comprises an alkali metal and an alkaline earth metal, with an alcohol under a condition sufficient to produce an alkali metal alcoholate and alkaline earth metal alcoholate and, optionally, separating and recovering the alkali metal alcoholate.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: April 16, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Wayne B. Ely, Carl Andrew Renner