Granted Patent
Utility
US 5,004,652 · App. 07/567,598
High-coercivity thin-film recording medium and method
Inventors:
Brij B. Lal, Atef H. Eltoukhy
Patented Case
View Patent ↗
Granted: Apr 2, 1991
Filed: Aug 15, 1990
Inventors
Brij B. Lal
Atef H. Eltoukhy
Assignee (at issue)
HMT Technology 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.