Patents by Inventor Robert Allen Halling

Robert Allen Halling 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).

  • Low viscosity imine reactive diluents and coating compositions made therefrom
    Patent number: 6365673
    Abstract: This invention concerns low viscosity aldimine and ketimine reactive diluents having multi-imine functionality, which are useful in automotive refinish coating compositions, including a process for making them and the coatings that contain them.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: April 2, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Patrick Henry Corcoran, Carl Brent Douglas, Eric Diaz Felton, Robert Allen Halling, Josef Huybrechts, Gary Delmar Jaycox, Marko Strukelj
  • Permselective membranes of diacyl hydrazide-containing aromatic polymers having selected metals complexed therewith
    Patent number: 3954607
    Abstract: Permselective membranes comprising hydrazide-containing aromatic polymers complexed with selected metals that form square planar coordination complexes therewith; the membranes being prepared by reacting the polymer with a salt solution of the selected metal so that the metal is incorporated into the resulting membranes; the membranes being useful, among other things, for the reverse osmosis separation of a salt solute from an aqueous solvent.
    Type: Grant
    Filed: August 9, 1974
    Date of Patent: May 4, 1976
    Assignee: E. I. Du Pont de nemours and Company
    Inventor: Robert Allen Halling