Granted Patent
Utility
US 6,487,146 · App. 09/523,891
Read focus optimization for an optical disk drive
Inventor:
Johannes J. Verboom
Patented Case
View Patent ↗
Granted: Nov 26, 2002
Filed: Mar 13, 2000
Inventor
Johannes J. Verboom
Assignee (at issue)
Plasmon LMS, Inc.
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.