Granted Patent
Utility
US 6,636,366 · App. 10/235,916
Objective for optical disk, optical pickup, optical disk writer-reader, and optical disk reader
Inventor:
Makoto Itonaga
Patented Case
View Patent ↗
Granted: Oct 21, 2003
Filed: Sep 6, 2002
Inventor
Makoto Itonaga
Assignee (at issue)
Victor Company of Japan, 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.