Granted Patent
Utility
US 6,504,688 · App. 09/998,548
Magnetoresistive sensor capable of providing strong exchange coupling magnetic field, and thin-film magnetic head using the same
Inventors:
Naoya Hasegawa, Masamichi Saito
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Nov 29, 2001
Inventors
Naoya Hasegawa
Masamichi Saito
Assignee (at issue)
ALPS ELECTRIC CO., LTD.
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.