Granted Patent
Utility
US 6,473,387 · App. 09/655,880
Optical disc apparatus
Inventors:
Koichi Maruyama, Takashi Yamanouchi
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Sep 6, 2000
Inventors
Koichi Maruyama
Takashi Yamanouchi
Assignee (at issue)
Asahi Kogaku Kogyo Kabushiki Kaisha
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.