Granted Patent
Utility
US 5,895,236 · App. 08/951,000
Semiconductor device fabricating method having a gettering step
Inventor:
Akihiro Yaoita
Patented Case
View Patent ↗
Granted: Apr 20, 1999
Filed: Oct 15, 1997
Inventor
Akihiro Yaoita
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.