Inventor · disambiguated record
Ken Ichiryu
Also filed as: ICHIRYU KEN · KUWAYAMA MASATOSHI
26 granted patents·1 pending application·738 citations·filing 1974–2016
97Inventor score
Top patents by PatentIndex Score
27 records- 0198US4175589AFluid pressure drive deviceHITACHI LTD·Filed 1977·Granted Nov 27, 1979·102 cites·10 claims
- 0294US4038848AMethod and apparatus for controlling eccentricity of rolls in rolling millHITACHI LTD·Filed 1975·Granted Aug 2, 1977·34 cites·14 claims
- 0393US4529362AServo pump for hydraulic systemsHITACHI LTD·Filed 1984·Granted Jul 16, 1985·62 cites·2 claims
- 0491US4529974AFluid leakage detecting apparatusHITACHI LTD·Filed 1982·Granted Jul 16, 1985·68 cites·6 claims
- 0590US4012653ALow noise alternating current dynamoelectro machineHITACHI LTD·Filed 1974·Granted Mar 15, 1977·44 cites·12 claims
- 0689US6074023AGuide roller assembly for crawler type vehicles and method for forming guide rollerHITACHI CONSTRUCTION MACHINERY·Filed 1997·Granted Jun 13, 2000·40 cites·6 claims
- 0789US5144843APressure sensorHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Sep 8, 1992·76 cites·7 claims
- 0888US4919390ASolenoid operated valve apparatusHITACHI CONSTRUCTION MACHINERY·Filed 1988·Granted Apr 24, 1990·42 cites·4 claims
- 0979US4534452AHydraulic elevatorHITACHI LTD·Filed 1984·Granted Aug 13, 1985·24 cites·4 claims
- 1076US5861577ASeal structure for member-passing-through hole bored in metal partition memberHITACHI CONSTRUCTION MACHINERY·Filed 1997·Granted Jan 19, 1999·38 cites·40 claims
- 1174US4500865AFluid leakage detecting elementHITACHI LTD·Filed 1983·Granted Feb 19, 1985·28 cites·8 claims
- 1273US3945468ASound preventive device for use in elevatorHITACHI LTD·Filed 1974·Granted Mar 23, 1976·21 cites·5 claims
- 1372US6662613B2Long member bending apparatusKIKUCHI SEISAKUSHO CO LTD·Filed 2002·Granted Dec 16, 2003·11 cites·2 claims
- 1466US3955649ADevice for correcting floor level of hydraulic elevatorHITACHI LTD·Filed 1974·Granted May 11, 1976·20 cites·12 claims
- 1564US4813447AFlow control valve apparatusHITACHI CONSTRUCTION MACHINERY·Filed 1988·Granted Mar 21, 1989·23 cites·15 claims
- 1664US4215723AFluid pressure servo valve assemblyHITACHI LTD·Filed 1977·Granted Aug 5, 1980·17 cites·6 claims
- 1763US4036041AGage control system for rolling millHITACHI LTD·Filed 1976·Granted Jul 19, 1977·10 cites·15 claims
- 1861US4788902AThrust hydrostatic bearing device for use in axial piston machineHITACHI LTD·Filed 1987·Granted Dec 6, 1988·21 cites·8 claims
- 1961US4544129ADirect-acting servo valveHITACHI LTD·Filed 1983·Granted Oct 1, 1985·12 cites·7 claims
- 2048US5187017ASliding member, and method and apparatus for producing the same by gas sulphonitridingHITACHI CONSTRUCTION MACHINERY·Filed 1991·Granted Feb 16, 1993·11 cites·4 claims
- 2147US4735233ARotary valveHITACHI LTD·Filed 1987·Granted Apr 5, 1988·12 cites·3 claims
- 2245US4428559ADirect drive type servo valveHITACHI LTD·Filed 1981·Granted Jan 31, 1984·8 cites·12 claims
- 2338US4404892AHydraulic operating apparatusHITACHI LTD·Filed 1980·Granted Sep 20, 1983·4 cites·9 claims
- 2437US4464978AServovalve apparatusHITACHI LTD·Filed 1982·Granted Aug 14, 1984·7 cites·18 claims
- 2534US10004532B2Puncture assistance systemUNIV WASEDA·Filed 2016·Granted Jun 26, 2018·0 cites·6 claims
- 2634US2009199610A1Actuator, parallel link mechanism using the same, and long material bending deviceKIKUCHI SEISAKUSHO CO LTD·Filed 2005·Application pending·0 cites
- 2730US5290369AMethod of gas sulphonitridingHITACHI CONSTRUCTION MACHINERY·Filed 1992·Granted Mar 1, 1994·3 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →