Granted Patent
Utility
US 6,721,144 · App. 09/755,556
Spin valves with co-ferrite pinning layer
Inventors:
Matthew J. Carey, Hoa Van Do, Robin Frederick Charles Farrow, Bruce Alvin Gurney, David Margulies, Ronald Franklin Marks, Philip M. Rice, Ren Xu
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Jan 4, 2001
Inventors
Matthew J. Carey
Hoa Van Do
Robin Frederick Charles Farrow
Bruce Alvin Gurney
David Margulies
Ronald Franklin Marks
Philip M. Rice
Ren Xu
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.