Granted Patent
Utility
US 6,281,676 · App. 09/209,197
Rigid disk surface defect detection and classification
Inventors:
Hal Hjalmar Ottesen, Gordon James Smith
Patented Case
View Patent ↗
Granted: Aug 28, 2001
Filed: Dec 10, 1998
Inventors
Hal Hjalmar Ottesen
Gordon James Smith
Assignee (at issue)
International Business Machines 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.