Inventor · disambiguated record
Osamu Tomikawa
Also filed as: TOMIKAWA OSAMU
10 granted patents·277 citations·filing 1989–2007
91Inventor score
Top patents by PatentIndex Score
10 records- 0187US7079982B2Working machine, trouble diagnosis system of working machine, and maintenance system of working machineHITACHI CONSTRUCTION MACHINERY·Filed 2002·Granted Jul 18, 2006·52 cites·12 claims
- 0286US4955344AApparatus for controlling rotational speed of prime mover of construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Sep 11, 1990·41 cites·33 claims
- 0384US5267440AHydraulic control system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1991·Granted Dec 7, 1993·55 cites·14 claims
- 0482US7493112B2Construction machine management apparatus and construction machines management systemHITACHI CONSTRUCTION MACHINERY·Filed 2007·Granted Feb 17, 2009·16 cites·4 claims
- 0582US5048296AAnti-vibration apparatus in a hydraulic system for boom cylinder of working apparatusHITACHI CONSTRUCTION CO LTD·Filed 1990·Granted Sep 17, 1991·56 cites·20 claims
- 0672US7228125B2Construction machine management apparatus and construction machines management systemHITACHI CONSTRUCTION MACHINERY·Filed 2002·Granted Jun 5, 2007·23 cites·5 claims
- 0758US6998957B2Security system of construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 2002·Granted Feb 14, 2006·10 cites·12 claims
- 0842US5632190ABurglarproof device for hydraulic machineHITACHI CONSTRUCTION MACHINERY·Filed 1996·Granted May 27, 1997·13 cites·20 claims
- 0938US5265569APrime mover rotational speed control systemHITACHI CONSTRUCTION MACHINERY·Filed 1991·Granted Nov 30, 1993·8 cites·2 claims
- 1032US5036817AEngine remote control systemHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Aug 6, 1991·3 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →