Inventor
OTAKA MASAHIRO
JP14 patents
⚠️ This page may combine multiple inventors who share the name “OTAKA MASAHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
13 patentsUS5897062AApr 27, 1999
Fluid jet nozzle and stress improving treatment method using the nozzle
HITACHI LTD58 citations95
US5537037AJul 16, 1996
Apparatus with cancel coil assembly for cancelling a field parallel to an axial direction to the plural coils and to a squid pick up coil
HITACHI LTD45 citations92
US5134368AJul 28, 1992
Apparatus for magnetically detecting degradation of metal material using superconductor sensor system and reference material data comparison
HITACHI LTD22 citations92
US5059903AOct 22, 1991
Method and apparatus utilizing a magnetic field for detecting degradation of metal material
HITACHI LTD33 citations92
US4987367AJan 22, 1991
Method and apparatus for predicting deterioration of a member constituting a part of equipment
HITACHI LTD31 citations92
US4764970AAug 16, 1988
Method and apparatus for detecting cracks
HITACHI LTD41 citations92
US5414356AMay 9, 1995
Fluxmeter including squid and pickup coil with flux guiding core and method for sensing degree of deterioration of an object
HITACHI LTD41 citations91
US5553106ASep 3, 1996
Residual stress improving method for members in reactor pressure vessel
HITACHI LTD21 citations90
US5331278AJul 19, 1994
Apparatus for inspecting degradation/damage of a material using an AC magnet, a superconducting DC magnet and a SQUID sensor
HITACHI LTD25 citations90
US5305361AApr 19, 1994
Method of and apparatus for water-jet peening
HITACHI LTD44 citations90
US5749384AMay 12, 1998
Method and apparatus for performing preventive maintenance on the bottom portion of a reactor pressure vessel using cavitation bubbles
HITACHI LTD18 citations82
US5793203AAug 11, 1998
Measurement system with noise reduction circuit
HITACHI LTD2 citations62
US5329099AJul 12, 1994
Method of maintaining housing of reactor pressure vessel and heat treatment equipment therefor
HITACHI LTD4 citations62