Inventor · disambiguated record
Yasutaka Tsuruga
Also filed as: TSURUGA YASUTAKA
63 granted patents·5 pending applications·328 citations·filing 1997–2023
98Inventor score
Files withHITACHI CONSTRUCTION MACH CO40HITACHI CONSTRUCTION MACHINERY11HITACHI CONSTRUCTION MACHINERY TIERRA CO LTD6TSURUGA YASUTAKA4MORI KAZUSHIGE2
Top patents by PatentIndex Score
68 records- 0195US11718977B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2020·Granted Aug 8, 2023·4 cites·4 claims
- 0294US10329739B2Construction machineHITACHI CONSTRUCTION MACH CO·Filed 2016·Granted Jun 25, 2019·7 cites·4 claims
- 0391US11739502B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2021·Granted Aug 29, 2023·2 cites·4 claims
- 0489US10400797B2Hydraulic control system for working machineHITACHI CONSTRUCTION MACH CO·Filed 2015·Granted Sep 3, 2019·5 cites·3 claims
- 0589US6408622B1Hydraulic drive deviceHITACHI CONSTRUCTION MACHINERY·Filed 1998·Granted Jun 25, 2002·45 cites·6 claims
- 0688US11377822B2Hydraulic drive apparatusHITACHI CONSTRUCTION MACH CO·Filed 2017·Granted Jul 5, 2022·4 cites·4 claims
- 0788US9187880B2Electric drive unit for construction machineTSURUGA YASUTAKA·Filed 2012·Granted Nov 17, 2015·15 cites·2 claims
- 0886US11391020B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2020·Granted Jul 19, 2022·2 cites·7 claims
- 0985US11230821B2Construction machineHITACHI CONSTRUCTION MACH CO·Filed 2019·Granted Jan 25, 2022·3 cites·5 claims
- 1085US11193254B2Construction machineHITACHI CONSTRUCTION MACH CO·Filed 2019·Granted Dec 7, 2021·3 cites·5 claims
- 1185US9845589B2Hydraulic drive system for construction machineHITACHI CONSTRUCTION MACHINERY TIERRA CO LTD·Filed 2013·Granted Dec 19, 2017·6 cites·7 claims
- 1283US10907666B2Hydraulic drive systemHITACHI CONSTRUCTION MACH CO·Filed 2016·Granted Feb 2, 2021·3 cites·10 claims
- 1383US8857169B2Hydraulic drive system for construction machineTAKAHASHI KIWAMU·Filed 2009·Granted Oct 14, 2014·12 cites·8 claims
- 1482US9200431B2Hydraulic drive system for construction machineMORI KAZUSHIGE·Filed 2011·Granted Dec 1, 2015·10 cites·2 claims
- 1581US10995475B2Construction machineHITACHI CONSTRUCTION MACH CO·Filed 2018·Granted May 4, 2021·2 cites·13 claims
- 1681US10450725B2Construction machineHITACHI CONSTRUCTION MACH CO·Filed 2016·Granted Oct 22, 2019·4 cites·4 claims
- 1779US10435870B2Construction machineHITACHI CONSTRUCTION MACH CO·Filed 2016·Granted Oct 8, 2019·4 cites·9 claims
- 1879US9890801B2Hydraulic drive system for construction machineHITACHI CONSTRUCTION MACH CO·Filed 2014·Granted Feb 13, 2018·7 cites·7 claims
- 1979US6526747B2Hydraulic driving deviceHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Mar 4, 2003·20 cites·11 claims
- 2078US10287751B2Hydraulic drive system for working machine including track device of crawler typeHITACHI CONSTRUCTION MACHINERY TIERRA CO LTD·Filed 2016·Granted May 14, 2019·3 cites·1 claims
- 2178US10060451B2Hydraulic drive system for construction machineHITACHI CONSTRUCTION MACHINERY TIERRA CO LTD·Filed 2014·Granted Aug 28, 2018·4 cites·2 claims
- 2277US11124166B2Vehicular brake systemHITACHI CONSTRUCTION MACH CO·Filed 2017·Granted Sep 21, 2021·2 cites·5 claims
- 2377US10604914B2Control system for hydraulic construction machineHITACHI CONSTRUCTION MACH CO·Filed 2016·Granted Mar 31, 2020·3 cites·2 claims
- 2477US10215198B2Hydraulic drive system for construction machineHITACHI CONSTRUCTION MACHINERY TIERRA CO LTD·Filed 2014·Granted Feb 26, 2019·4 cites·6 claims
- 2575US10626575B2Control system for construction machineHITACHI CONSTRUCTION MACH CO·Filed 2016·Granted Apr 21, 2020·3 cites·4 claims
- 2675US10450722B2Control system for construction machineHITACHI CONSTRUCTION MACH CO·Filed 2016·Granted Oct 22, 2019·3 cites·4 claims
- 2774US10533303B2Construction machine to adjust operation reaction force of an operating leverHITACHI CONSTRUCTION MACH CO·Filed 2016·Granted Jan 14, 2020·3 cites·6 claims
- 2874US9976283B2Hydraulic drive system for construction machineHITACHI CONSTRUCTION MACHINERY TIERRA CO LTD·Filed 2014·Granted May 22, 2018·6 cites·4 claims
- 2971US11454004B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2019·Granted Sep 27, 2022·2 cites·11 claims
- 3070US11149410B2Work machine with automatic and manual operating controlHITACHI CONSTRUCTION MACH CO·Filed 2019·Granted Oct 19, 2021·2 cites·7 claims
- 3170US8919109B2Hydraulic drive system for construction machine having exhaust gas purification deviceTAKAHASHI KIWAMU·Filed 2011·Granted Dec 30, 2014·3 cites·11 claims
- 3270US6915980B2Winding and cutting machine for rolled paperHANSHIN HORO CO LTD·Filed 2003·Granted Jul 12, 2005·12 cites·3 claims
- 3370US6651428B2Hydraulic drive deviceHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Nov 25, 2003·13 cites·6 claims
- 3469US9347203B2Electric drive unit for construction machineTSURUGA YASUTAKA·Filed 2012·Granted May 24, 2016·5 cites·4 claims
- 3568US10273658B2Construction machineHITACHI CONSTRUCTION MACH CO·Filed 2015·Granted Apr 30, 2019·2 cites·3 claims
- 3668US10107311B2Hydraulic drive system for construction machineHITACHI CONSTRUCTION MACHINERY TIERRA CO LTD·Filed 2014·Granted Oct 23, 2018·4 cites·5 claims
- 3767US11946224B2Construction machineHITACHI CONSTRUCTION MACH CO·Filed 2021·Granted Apr 2, 2024·0 cites·5 claims
- 3867US6584770B2Hydraulic drive systemHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Jul 1, 2003·17 cites·6 claims
- 3966US6192681B1Hydraulic drive apparatusHITACHI CONSTRUCTION MACHINERY·Filed 1997·Granted Feb 27, 2001·18 cites·6 claims
- 4065US8413676B2Construction machineUMIZAKI YUUKI·Filed 2008·Granted Apr 9, 2013·8 cites·7 claims
- 4162US11965315B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2021·Granted Apr 23, 2024·0 cites·5 claims
- 4261US6105367AHydraulic drive systemHITACHI CONSTRUCTION MACHINERY·Filed 1997·Granted Aug 22, 2000·20 cites·7 claims
- 4358US12297624B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2022·Granted May 13, 2025·0 cites·2 claims
- 4457US11946492B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2021·Granted Apr 2, 2024·0 cites·6 claims
- 4557US11946226B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2021·Granted Apr 2, 2024·0 cites·3 claims
- 4657US7798738B2Swivel joint for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2004·Granted Sep 21, 2010·9 cites·4 claims
- 4755US12320098B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2023·Granted Jun 3, 2025·0 cites·5 claims
- 4855US12049744B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2022·Granted Jul 30, 2024·0 cites·1 claims
- 4955US6772590B2Hydraulic driving deviceHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Aug 10, 2004·6 cites·6 claims
- 5052US12173475B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2021·Granted Dec 24, 2024·0 cites·3 claims
Showing the top 50 of 68 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →