Granted Patent
Utility
US 6,583,440 · App. 09/988,332
SOI SUBSTRATE, ELEMENT SUBSTRATE, SEMICONDUCTOR DEVICE, ELECTRO-OPTICAL APPARATUS, ELECTRONIC EQUIPMENT, METHOD OF MANUFACTURING THE SOI SUBSTRATE, METHOD OF MANUFACTURING THE ELEMENT SUBSTRATE, AND METHOD OF MANUFACTURING THE ELECTRO-OPTICAL APPARATUS
Inventor:
Masahiro Yasukawa
Patented Case
View Patent ↗
Granted: Jun 24, 2003
Filed: Nov 19, 2001
Inventor
Masahiro Yasukawa
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.