Granted Patent
Utility
US 6,195,240 · App. 09/127,254
Spin valve head with diffusion barrier
Inventor:
Hardayal Singh Gill
Patented Case
View Patent ↗
Granted: Feb 27, 2001
Filed: Jul 31, 1998
Inventor
Hardayal Singh Gill
Assignee (at issue)
International Business Machines 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.