Granted Patent
Utility
US 6,714,367 · App. 09/555,583
Master information medium and method of master information recording
Inventors:
Tatsuaki Ishida, Hiroshi Ryonai, Nobuyuki Komura, Keizo Miyata, Kiyokazu Tohma
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Aug 7, 2000
Inventors
Tatsuaki Ishida
Hiroshi Ryonai
Nobuyuki Komura
Keizo Miyata
Kiyokazu Tohma
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.