Granted Patent
Utility
US 6,304,986 · App. 09/268,142
Method and apparatus for inspecting recording medium for defects
Inventors:
Yiping Ma, Eric Peters, Weimin Pan, Klinton D. Washburn
Patented Case
View Patent ↗
Granted: Oct 16, 2001
Filed: Mar 12, 1999
Inventors
Yiping Ma
Eric Peters
Weimin Pan
Klinton D. Washburn
Assignee (at issue)
IO-Mega Holding Corporation
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.