Granted Patent
Utility
US 6,674,420 · App. 09/987,951
Driving circuit of electro-optical device, driving method for electro-optical device, and electro-optical device and electronic equipment employing the electro-optical device
Inventors:
Yojiro Matsueda, Tokuroh Ozawa
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Nov 16, 2001
Inventors
Yojiro Matsueda
Tokuroh Ozawa
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.