Granted Patent
Utility
US 5,397,903 · App. 08/010,335
Semiconductor substrate for gettering
Inventor:
Koji Hirose
Patented Case
View Patent ↗
Granted: Mar 14, 1995
Filed: Jan 28, 1993
Inventor
Koji Hirose
Assignee (at issue)
NEC 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.