Granted Patent
Utility
US 5,580,667 · App. 08/041,943
Multilayered medium with gradient isolation layer
Inventors:
Brij B. Lal, Tadashi Shinohara
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Apr 2, 1993
Inventors
Brij B. Lal
Tadashi Shinohara
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.