Granted Patent
Utility
US 5,442,498 · App. 08/148,791
Asynchronous track code encodement and detection for disk drive servo control system
Inventors:
Wayne Leung Cheung, Chenhuei J. Chaing, Thinh Huu Nguyen
Patented Case
View Patent ↗
Granted: Aug 15, 1995
Filed: Nov 8, 1993
Inventors
Wayne Leung Cheung
Chenhuei J. Chaing
Thinh Huu Nguyen
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.