Granted Patent
Utility
US 5,421,975 · App. 07/959,986
Method for enhancing the magnetic and roughness properties of thin film magnetic recording media and the resulting enhanced media
Inventors:
Nader Mahvan, Atef H. Eltoukhy, Edward Teng, Hung-Chang W. Huang
Patented Case
View Patent ↗
Granted: Jun 6, 1995
Filed: Oct 13, 1992
Inventors
Nader Mahvan
Atef H. Eltoukhy
Edward Teng
Hung-Chang W. Huang
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.