Granted Patent
Utility
US 5,973,175 · App. 09/025,103
Hydrothermal process for making ultrafine metal oxide powders
Inventor:
Salvatore A. Bruno
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: Feb 17, 1998
Inventor
Salvatore A. Bruno
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.