Granted Patent
Utility
US 6,765,713 · App. 10/409,077
Electrophoretic composition, image display medium using same and image display device
Inventor:
Masahiro Yanagisawa
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Apr 9, 2003
Inventor
Masahiro Yanagisawa
Assignee (at issue)
RICOH COMPANY, 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.