Granted Patent
Utility
US 5,789,769 · App. 08/590,515
Semiconductor device having an improved trench isolation
Inventor:
Toru Yamazaki
Patented Case
View Patent ↗
Granted: Aug 4, 1998
Filed: Jan 24, 1996
Inventor
Toru Yamazaki
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.