Granted Patent
Utility
US 6,522,341 · App. 09/580,970
Multi-layer image mixing apparatus
Inventor:
Atsushi Nagata
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: May 30, 2000
Inventor
Atsushi Nagata
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.