Granted Patent
Utility
US 6,469,877 · App. 09/335,156
Spin valve device with improved exchange layer defined track width and method of fabrication
Inventors:
Kenneth E. Knapp, Ronald A. Barr
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Jun 15, 1999
Inventors
Kenneth E. Knapp
Ronald A. Barr
Assignee (at issue)
Read Rite 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.