Granted Patent
Utility
US 5,804,491 · App. 08/744,436
Combined field/trench isolation region fabrication methods
Inventor:
Dong-Ho Ahn
Patented Case
View Patent ↗
Granted: Sep 8, 1998
Filed: Nov 8, 1996
Inventor
Dong-Ho Ahn
Assignee (at issue)
SAMSUNG DISPLAY CO., LTD.
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.