Granted Patent
Utility
US 6,781,777 · App. 09/983,077
Master information carrier and method for manufacturing information recording medium using the same
Inventors:
Keizo Miyata, Hideyuki Hashi, Tatsuaki Ishida
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Oct 23, 2001
Inventors
Keizo Miyata
Hideyuki Hashi
Tatsuaki Ishida
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.