Inventor · disambiguated record
Akira Tatsumi
Also filed as: TATSUMI AKIRA
18 granted patents·494 citations·filing 1981–2020
95Inventor score
Top patents by PatentIndex Score
18 records- 0194US5638677AControl device for hydraulically propelled work vehicleHITACHI CONSTRUCTION MACHINERY·Filed 1994·Granted Jun 17, 1997·75 cites·5 claims
- 0294US5155996AHydraulic drive system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1990·Granted Oct 20, 1992·61 cites·38 claims
- 0390US4697418AControl system for hydraulically-operated construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 1986·Granted Oct 6, 1987·53 cites·13 claims
- 0486US5479778AHydraulic control system for construction machinesHITACHI CONSTRUCTION MACHINERY·Filed 1994·Granted Jan 2, 1996·33 cites·14 claims
- 0586US4955344AApparatus for controlling rotational speed of prime mover of construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Sep 11, 1990·41 cites·33 claims
- 0686US4942737ADrive control system for hydraulic construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1987·Granted Jul 24, 1990·31 cites·13 claims
- 0785US5307631AHydraulic control apparatus for hydraulic construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1992·Granted May 3, 1994·57 cites·25 claims
- 0885US4726186AControl system of hydraulic construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 1986·Granted Feb 23, 1988·39 cites·17 claims
- 0972US5277269AEngine revolution speed control device for a hydraulically driven vehicleHITACHI CONSTRUCTION MACHINERY·Filed 1992·Granted Jan 11, 1994·28 cites·15 claims
- 1062US5848831AIlluminated umbrellaFiled 1997·Granted Dec 15, 1998·27 cites·1 claims
- 1160US4658315AMagnetic head mounting device of magnetic recording apparatusHITACHI LTD·Filed 1984·Granted Apr 14, 1987·11 cites·5 claims
- 1249US5477679AApparatus for controlling revolution speed of prime mover for hydraulically propelled work vehicleHITACHI CONSTRUCTION MACHINERY·Filed 1990·Granted Dec 26, 1995·18 cites·11 claims
- 1336US4365542AElectric fanHITACHI LTD·Filed 1981·Granted Dec 28, 1982·5 cites·5 claims
- 1435USD973347SGuitar strapTATSUMI GAKKI INC·Filed 2020·Granted Dec 27, 2022·0 cites·1 claims
- 1534USD788838SThumb rest for a clarinetTATSUMI GAKKI INC·Filed 2015·Granted Jun 6, 2017·2 cites·1 claims
- 1634US5803011AVehicle with hullFiled 1997·Granted Sep 8, 1998·6 cites·2 claims
- 1732US6930895B2Computer power supplyNIPRON CO LTD·Filed 2003·Granted Aug 16, 2005·4 cites·6 claims
- 1832US5036817AEngine 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 →