Patents by Inventor John J. Zullo

John J. Zullo 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 the production of aliphatic phosphonic acids
    Patent number: 4728466
    Abstract: An improvement in the process for the manufacture of aliphatic phosphonic acid the improvement comprising maintaining the reaction zone volume at about 80 to 95 percent capacity of reactants and/or products by continuously adding diester of aliphatic phosphonic acid reactant up to about 60 percent of the total reaction time said reactant being added in an amount sufficient such that said reactants and/or products will always be present in said reactor so as to occupy at least 80 percent of the reaction zone volume during said reactant addition.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: March 1, 1988
    Assignee: Rhone-Poulenc Nederland B.V.
    Inventors: Kai W. Young, John J. Zullo