Granted Patent
Utility
US 6,423,639 · App. 09/603,202
Planarization method of insulating layer for semiconductor device
Inventor:
Seok Ji HONG
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Jun 26, 2000
Inventor
Seok Ji HONG
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.