Inventor · disambiguated record
Masahiro Otaka
Also filed as: OTAKA MASAHIRO
14 granted patents·393 citations·filing 1982–1996
94Inventor score
Top patents by PatentIndex Score
14 records- 0191US5305361AMethod of and apparatus for water-jet peeningHITACHI LTD·Filed 1993·Granted Apr 19, 1994·44 cites·12 claims
- 0290US4987367AMethod and apparatus for predicting deterioration of a member constituting a part of equipmentHITACHI LTD·Filed 1989·Granted Jan 22, 1991·31 cites·18 claims
- 0382US5897062AFluid jet nozzle and stress improving treatment method using the nozzleHITACHI LTD·Filed 1996·Granted Apr 27, 1999·58 cites·11 claims
- 0478US4764970AMethod and apparatus for detecting cracksHITACHI LTD·Filed 1986·Granted Aug 16, 1988·41 cites·3 claims
- 0577US5537037AApparatus with cancel coil assembly for cancelling a field parallel to an axial direction to the plural coils and to a squid pick up coilHITACHI LTD·Filed 1994·Granted Jul 16, 1996·45 cites·12 claims
- 0677US5059903AMethod and apparatus utilizing a magnetic field for detecting degradation of metal materialHITACHI LTD·Filed 1988·Granted Oct 22, 1991·33 cites·6 claims
- 0773US5414356AFluxmeter including squid and pickup coil with flux guiding core and method for sensing degree of deterioration of an objectHITACHI LTD·Filed 1991·Granted May 9, 1995·41 cites·38 claims
- 0871US5749384AMethod and apparatus for performing preventive maintenance on the bottom portion of a reactor pressure vessel using cavitation bubblesHITACHI LTD·Filed 1995·Granted May 12, 1998·18 cites·14 claims
- 0964US5134368AApparatus for magnetically detecting degradation of metal material using superconductor sensor system and reference material data comparisonHITACHI LTD·Filed 1990·Granted Jul 28, 1992·22 cites·1 claims
- 1060US5331278AApparatus for inspecting degradation/damage of a material using an AC magnet, a superconducting DC magnet and a SQUID sensorHITACHI LTD·Filed 1991·Granted Jul 19, 1994·25 cites·17 claims
- 1154US5553106AResidual stress improving method for members in reactor pressure vesselHITACHI LTD·Filed 1995·Granted Sep 3, 1996·21 cites·11 claims
- 1246US4510608ALaser tube utilizing negative glowMITA INDUSTRIAL CO LTD·Filed 1982·Granted Apr 9, 1985·8 cites·25 claims
- 1337US5329099AMethod of maintaining housing of reactor pressure vessel and heat treatment equipment thereforHITACHI LTD·Filed 1991·Granted Jul 12, 1994·4 cites·22 claims
- 1431US5793203AMeasurement system with noise reduction circuitHITACHI LTD·Filed 1995·Granted Aug 11, 1998·2 cites·54 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →