Inventor · disambiguated record
Juichi Morikawa
Also filed as: MORIKAWA JUICHI
14 granted patents·312 citations·filing 1978–1996
93Inventor score
Files withHITACHI LTD14
Top patents by PatentIndex Score
14 records- 0191US4961122AHydrodynamic grooved bearing deviceHITACHI LTD·Filed 1987·Granted Oct 2, 1990·55 cites·30 claims
- 0285US5717818AAudio signal storing apparatus having a function for converting speech speedHITACHI LTD·Filed 1994·Granted Feb 10, 1998·136 cites·34 claims
- 0374US4223292AHall elementHITACHI LTD·Filed 1978·Granted Sep 16, 1980·21 cites·9 claims
- 0469US4731683AMagnetic recording and reproducing system with composite magnetic headHITACHI LTD·Filed 1985·Granted Mar 15, 1988·16 cites·4 claims
- 0567US4803338AMagnetic head having improved track width narrowing groovesHITACHI LTD·Filed 1987·Granted Feb 7, 1989·14 cites·19 claims
- 0659US4833562ARotary magnetic head cylinder device for suppressing vibrations ofa magnetic tapeHITACHI LTD·Filed 1987·Granted May 23, 1989·13 cites·6 claims
- 0759US4794483AMagnetic head having layers of amorphous magnetic alloy bonded together with a glass containing vandium oxide phosphorus oxide and antimony oxideHITACHI LTD·Filed 1986·Granted Dec 27, 1988·11 cites·14 claims
- 0857US5363263ACoil assembly for rotary magnetic head apparatusHITACHI LTD·Filed 1992·Granted Nov 8, 1994·12 cites·11 claims
- 0953US5126906ARotary magnetic head device with rotary transformer having high coupling coefficientHITACHI LTD·Filed 1990·Granted Jun 30, 1992·10 cites·11 claims
- 1050US5057944AMultiplex rotating magnetic head system for multiply recording and erasing audio and video signalsHITACHI LTD·Filed 1988·Granted Oct 15, 1991·8 cites·12 claims
- 1149US4745507AComposite type magnetic head with non-magnetic member in coil mounting portionHITACHI LTD·Filed 1986·Granted May 17, 1988·7 cites·18 claims
- 1234US5825853ACommunication deviceHITACHI LTD·Filed 1996·Granted Oct 20, 1998·4 cites·3 claims
- 1334US4959743AJitter reducing tapered rotary drum for magnetic head apparatusHITACHI LTD·Filed 1988·Granted Sep 25, 1990·3 cites·4 claims
- 1433US5193045AHelical scan type magnetic recording and/or reproducing apparatus having combination type video head and flying erase head for low vibrationHITACHI LTD·Filed 1991·Granted Mar 9, 1993·2 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →