Inventor
DOI TSUGIHIRO
JP15 patents
⚠️ This page may combine multiple inventors who share the name “DOI TSUGIHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI MAXELL
14 patentsUS5079096AJan 7, 1992
Magnetic recording medium comprising a substrate coated with a primer which is a protonic acid doped polyaniline polymer
HITACHI MAXELL30 citations92
US7253988B2Aug 7, 2007
Recording/reproducing method of magnetic tape
HITACHI MAXELL18 citations91
US7494728B2Feb 24, 2009
Magnetic tape and magnetic tape cartridge
HITACHI MAXELL15 citations83
US7291409B2Nov 6, 2007
Magnetic recording medium using magnetic powder having a core portion and an outer layer portion including a rare earth element and magnetic recording cassette
HITACHI MAXELL9 citations73
US7267896B2Sep 11, 2007
Magnetic tape and magnetic tape cartridge
HITACHI MAXELL8 citations73
US7593177B2Sep 22, 2009
Recording/reproducing method of magnetic tape
HITACHI MAXELL5 citations72
US7170709B2Jan 30, 2007
Recording/reproducing method of magnetic tape
HITACHI MAXELL9 citations72
US7259935B2Aug 21, 2007
Magnetic tape including an intermediate layer consisting essentially of a binder
HITACHI MAXELL4 citations62
US7212372B2May 1, 2007
Magnetic tape and magnetic tape cartridge
HITACHI MAXELL5 citations62
US7309040B2Dec 18, 2007
Magnetic tape cartridge
HITACHI MAXELL3 citations61
US4828925AMay 9, 1989
Magnetic disc
HITACHI MAXELL4 citations60
US7445858B2Nov 4, 2008
Magnetic recording medium using magnetic powder having a core portion and an outer layer portion including a rare earth element and magnetic recording cassette
HITACHI MAXELL0 citations52
US7545597B2Jun 9, 2009
Recording/reproducing method of magnetic tape
HITACHI MAXELL0 citations51
US7522381B2Apr 21, 2009
Recording medium built-in cartridge and cartridge built-in package
HITACHI MAXELL0 citations50