Inventor · disambiguated record
Hisao Sonobe
Also filed as: SONOBE HISAO
15 granted patents·1 pending application·477 citations·filing 1976–2008
94Inventor score
Top patents by PatentIndex Score
16 records- 0194US4502286AConstant pressure type boiling cooling systemHITACHI LTD·Filed 1983·Granted Mar 5, 1985·144 cites·5 claims
- 0286US4330033AConstant pressure type ebullient cooling equipmentHITACHI LTD·Filed 1980·Granted May 18, 1982·59 cites·4 claims
- 0382US6752014B1Hot-wire type air flow meter for internal combustion engineHITACHI LTD·Filed 2000·Granted Jun 22, 2004·28 cites·33 claims
- 0475US6430066B2Electric power system having series connected capacitorHITACHI LTD·Filed 2001·Granted Aug 6, 2002·33 cites·15 claims
- 0575US4796993APhase modulation type fiber optic gyroscopeHITACHI LTD·Filed 1988·Granted Jan 10, 1989·37 cites·7 claims
- 0672US5208652AAn improved optical branching/coupling unit for an optical fiber gyroscope, and navigation system employing the sameHITACHI LTD·Filed 1991·Granted May 4, 1993·36 cites·26 claims
- 0770US6301957B1Fiber-optic cylinder pressure sensorHITACHI LTD·Filed 1998·Granted Oct 16, 2001·30 cites·4 claims
- 0866US5681989AIntake air amount measuring apparatus for internal combustion enginesHITACHI LTD·Filed 1995·Granted Oct 28, 1997·29 cites·11 claims
- 0960US4106557AOpen-type boiling cooling apparatusHITACHI LTD·Filed 1976·Granted Aug 15, 1978·26 cites·32 claims
- 1057US5701177AMethod for detecting fault of optical fiber gyro and apparatus for diagnosing fault of the sameHITACHI CABLE·Filed 1997·Granted Dec 23, 1997·27 cites·14 claims
- 1156US8302476B2Angular velocity measuring deviceMATSUMOTO MASAHIRO·Filed 2006·Granted Nov 6, 2012·1 cites·11 claims
- 1250US5264914AInterference sensor and method utilizing extracted alliasing frequency componentsHITACHI LTD·Filed 1993·Granted Nov 23, 1993·15 cites·16 claims
- 1347US2009049909A1Hydraulic ControllerHITACHI LTD·Filed 2008·Application pending·0 cites
- 1433US5608525APhase adjustable optical fiber gyro using both even order harmonics and an orthogonal component of an even-order harmonicHITACHI CABLE·Filed 1995·Granted Mar 4, 1997·6 cites·7 claims
- 1533US5555235AOptical fiber gyro with memory storing data measured under application of angular velocityHITACHI CABLE·Filed 1994·Granted Sep 10, 1996·4 cites·5 claims
- 1631US5396327AFiber-optic gyroscope having angular velocity correctionHITACHI CABLE·Filed 1992·Granted Mar 7, 1995·2 cites·13 claims
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