Granted Patent
Utility
US 6,642,651 · App. 10/102,878
Active matrix display device
Inventor:
Ichio Yudasaka
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Mar 22, 2002
Inventor
Ichio Yudasaka
Assignee (at issue)
SEIKO EPSON 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.