Granted Patent
Utility
US 6,569,720 · App. 09/238,899
Method for fabricating thin-film transistor
Inventor:
Masafumi Kunii
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Jan 28, 1999
Inventor
Masafumi Kunii
Assignee (at issue)
SONY GROUP 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.