Granted Patent
Utility
US 5,227,211 · App. 07/664,932
Magnetic recording disk medium comprising a magnetic thin film and a carbon overcoat having surface nitrogen atoms, a specified carbon structure, and oxygen atoms
Inventors:
Atef H. Eltoukhy, Yassin Mehmandoust
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Mar 5, 1991
Inventors
Atef H. Eltoukhy
Yassin Mehmandoust
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.