Granted Patent
Utility
US 5,922,120 · App. 08/997,678
Process for producing coated TiO.sub.2 pigment using cooxidation to provide hydrous oxide coatings
Inventors:
Narayanan Sankara Subramanian, Pratibha Laxman Gai, Russell Bertrum Diemer, Jr., Alvin Allen, John S. Gergely
Patented Case
View Patent ↗
Granted: Jul 13, 1999
Filed: Dec 23, 1997
Inventors
Narayanan Sankara Subramanian
Pratibha Laxman Gai
Russell Bertrum Diemer, Jr.
Alvin Allen
John S. Gergely
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.