Granted Patent
Utility
US 6,207,539 · App. 09/093,313
Semiconductor device having field isolating film of which upper surface is flat and method thereof
Inventor:
Hidetaka Natsume
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: Jun 9, 1998
Inventor
Hidetaka Natsume
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.