Patents by Inventor Philip J. D'Angelo

Philip J. D'Angelo 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).

  • Compositions for purifying liquids
    Patent number: 4927796
    Abstract: A process for the separation of radioisotopes and stable isotopes and other deleterious materials from radioactive waste and other liquids, wherein the waste stream is passed through a filter/demineralizer septum screen pre-coated with a mixture of finely-divided zeolitic material and finely-divided ion-exchange resin material.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: May 22, 1990
    Assignee: Epicor Incorporated
    Inventors: Philip J. D'Angelo, Richard Hetherington, Joseph J. Rogan
  • Method for purifying liquids
    Patent number: 4853130
    Abstract: A process for the separation of radioisotopes and stable isotopes and other deleterious materials from radioactive waste and other liquids, wherein the waste stream is passed through a filter/demineralizer septum screen pre-coated with a mixture of finely-divided zeolitic material and finely-divided ion-exchange resin material.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: August 1, 1989
    Assignee: Epicor Incorporated
    Inventors: Philip J. D'Angelo, Richard Hetherington, Joseph J. Rogan