Granted Patent
Utility
US 6,510,116 · App. 09/493,102
Optical information recording/reproducing method and optical information recording/reproducing apparatus
Inventors:
Naoyasu Miyagawa, Takashi Ishida, Junichi Minamino, Kenji Koishi, Shigeru Furumiya
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Jan 28, 2000
Inventors
Naoyasu Miyagawa
Takashi Ishida
Junichi Minamino
Kenji Koishi
Shigeru Furumiya
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.