Granted Patent
Utility
US 6,579,592 · App. 09/324,754
Magnetic recording tape with controlled Hc and magnetic flux/unit area value and controlled Cl/Fe intensity
Inventors:
Satoshi Matsubaguchi, Masaki Suzuki, Hiroaki Doushita, Hiroaki Takano, Hiroo Inaba, Kiyomi Ejiri
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Jun 3, 1999
Inventors
Satoshi Matsubaguchi
Masaki Suzuki
Hiroaki Doushita
Hiroaki Takano
Hiroo Inaba
Kiyomi Ejiri
Assignee (at issue)
Fujitsu Limited
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.