Inventor
MORIKAWA JUICHI
JP14 patents
Patents
14 patentsUS5717818AFeb 10, 1998
Audio signal storing apparatus having a function for converting speech speed
HITACHI LTD136 citations96
US4961122AOct 2, 1990
Hydrodynamic grooved bearing device
HITACHI LTD55 citations96
US4223292ASep 16, 1980
Hall element
HITACHI LTD21 citations81
US4731683AMar 15, 1988
Magnetic recording and reproducing system with composite magnetic head
HITACHI LTD16 citations74
US4803338AFeb 7, 1989
Magnetic head having improved track width narrowing grooves
HITACHI LTD14 citations73
US4745507AMay 17, 1988
Composite type magnetic head with non-magnetic member in coil mounting portion
HITACHI LTD7 citations73
US5363263ANov 8, 1994
Coil assembly for rotary magnetic head apparatus
HITACHI LTD12 citations72
US5126906AJun 30, 1992
Rotary magnetic head device with rotary transformer having high coupling coefficient
HITACHI LTD10 citations72
US4794483ADec 27, 1988
Magnetic head having layers of amorphous magnetic alloy bonded together with a glass containing vandium oxide phosphorus oxide and antimony oxide
HITACHI LTD11 citations72
US5057944AOct 15, 1991
Multiplex rotating magnetic head system for multiply recording and erasing audio and video signals
HITACHI LTD8 citations71
US4833562AMay 23, 1989
Rotary magnetic head cylinder device for suppressing vibrations ofa magnetic tape
HITACHI LTD13 citations69
US5825853AOct 20, 1998
Communication device
HITACHI LTD4 citations62
US5193045AMar 9, 1993
Helical scan type magnetic recording and/or reproducing apparatus having combination type video head and flying erase head for low vibration
HITACHI LTD2 citations61
US4959743ASep 25, 1990
Jitter reducing tapered rotary drum for magnetic head apparatus
HITACHI LTD3 citations60