Granted Patent
Utility
US 6,090,645 · App. 09/015,667
Fabrication method of semiconductor device with gettering treatment
Inventor:
Koji Hamada
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Jan 29, 1998
Inventor
Koji Hamada
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.