Granted Patent
Utility
US 6,028,366 · App. 09/151,770
Ball grid array semiconductor device
Inventor:
Masaaki Abe
Patented Case
View Patent ↗
Granted: Feb 22, 2000
Filed: Sep 11, 1998
Inventor
Masaaki Abe
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.