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OYO CORP
US10 patents
Top patents by PatentIndex Score
US7164476B2Jan 16, 2007
Apparatus and method for detecting pipeline defects
OYO CORP88 citations89
US4525819AJun 25, 1985
Horizontal geophone transducer assembly
OYO CORP64 citations89
US5859533AJan 12, 1999
Process for the production of a supply current of a solenoid for a measuring probe for electromagnetic tomography
OYO CORP22 citations87
US5650726AJul 22, 1997
Emitter for an electromagnetic tomography measurement system which connects a greater number of windings to a magnetic core at low frequencies than at high frequencies
OYO CORP29 citations87
US4710593ADec 1, 1987
Geophone cable splice and method
OYO CORP41 citations86
US4207961AJun 17, 1980
Exciting method for logging by S wave
OYO CORP44 citations81
US5534668AJul 9, 1996
Deadweight dropping type wave source
OYO CORP7 citations68
US5416281AMay 16, 1995
Deadweight dropping type wave source
OYO CORP7 citations68
US4594698AJun 10, 1986
Printed-circuit disc for stringing geophones
OYO CORP12 citations66
US4663747AMay 5, 1987
Variflux vibration transducer
OYO CORP1 citations50