Granted Patent
Utility
US 5,448,447 · App. 08/052,876
Process for making an improved tantalum powder and high capacitance low leakage electrode made therefrom
Inventor:
Hongju Chang
Patented Case
View Patent ↗
Granted: Sep 5, 1995
Filed: Apr 26, 1993
Inventor
Hongju Chang
Assignee (at issue)
Cabot Corporation
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.