Granted Patent
Utility
US 5,907,788 · App. 09/097,530
Semiconductor device capable of easily filling contact conductor plug in contact hole
Inventor:
Naoki Kasai
Patented Case
View Patent ↗
Granted: May 25, 1999
Filed: Jun 16, 1998
Inventor
Naoki Kasai
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.