Inventor · disambiguated record
Hidekazu Oka
Also filed as: OKA HIDEKAZU
19 granted patents·4 pending applications·244 citations·filing 2002–2015
95Inventor score
Files withKOBELCO CONSTR MACHINERY LTD17OKA HIDEKAZU3KOBELCO CONSTR MACH CO LTD1MATSUURA YUUJI1SHARP KK1
Top patents by PatentIndex Score
23 records- 0193US7178333B2Hydraulic control system for hydraulic excavatorKOBELCO CONSTR MACHINERY LTD·Filed 2005·Granted Feb 20, 2007·31 cites·4 claims
- 0290US7513109B2Hydraulic controller for working machineKOBELCO CONSTR MACHINERY LTD·Filed 2006·Granted Apr 7, 2009·17 cites·6 claims
- 0388US6708490B2Hydraulic system for construction machineKOBELCO CONSTR MACHINERY LTD·Filed 2002·Granted Mar 23, 2004·48 cites·19 claims
- 0484US7174711B2Hydraulic control system and construction machineKOBELCO CONSTR MACHINERY LTD·Filed 2005·Granted Feb 13, 2007·13 cites·6 claims
- 0582US7594395B2Hydraulic control device for working machineKOBELCO CONSTR MACHINERY LTD·Filed 2006·Granted Sep 29, 2009·15 cites·6 claims
- 0680US10280589B2Hydraulic drive apparatus for construction machineKOBELCO CONSTR MACH CO LTD·Filed 2015·Granted May 7, 2019·3 cites·4 claims
- 0780US8336305B2Hydraulic drive device and working machine with the sameMATSUURA YUUJI·Filed 2007·Granted Dec 25, 2012·13 cites·14 claims
- 0880US7168246B2Hydraulic control device for working machineKOBELCO CONSTR MACHINERY LTD·Filed 2005·Granted Jan 30, 2007·10 cites·3 claims
- 0979US7878770B2Hydraulic circuit of construction machineKOBELCO CONSTR MACHINERY LTD·Filed 2007·Granted Feb 1, 2011·9 cites·4 claims
- 1079US6655135B2Construction machineKOBELCO CONSTR MACHINERY LTD·Filed 2002·Granted Dec 2, 2003·19 cites·8 claims
- 1175US7059125B2Hydraulic controller for construction machineKOBELCO CONSTR MACHINERY LTD·Filed 2004·Granted Jun 13, 2006·25 cites·4 claims
- 1274US6837140B2Control system and method for hydraulic working machineKOBELCO CONSTR MACHINERY LTD·Filed 2003·Granted Jan 4, 2005·15 cites·6 claims
- 1368US9394666B2Construction machine with working attachmentOKA HIDEKAZU·Filed 2012·Granted Jul 19, 2016·5 cites·8 claims
- 1467US7284371B2Hydraulic control system for working machineKOBELCO CONSTR MACHINERY LTD·Filed 2005·Granted Oct 23, 2007·6 cites·1 claims
- 1563US7610755B2Hydraulic control apparatus of working machineKOBELCO CONSTR MACHINERY LTD·Filed 2007·Granted Nov 3, 2009·1 cites·6 claims
- 1658US8441471B2Light source device and display device including the sameOKA HIDEKAZU·Filed 2008·Granted May 14, 2013·1 cites·6 claims
- 1758US7499783B2Hydraulic control apparatus for hydraulic excavatorKOBELCO CONSTR MACHINERY LTD·Filed 2006·Granted Mar 3, 2009·4 cites·4 claims
- 1858US6688102B2Traveling control deviceKOBELCO CONSTR MACHINERY LTD·Filed 2002·Granted Feb 10, 2004·7 cites·16 claims
- 1950US2010283717A1Illuminating device and display deviceOKA HIDEKAZU·Filed 2008·Application pending·0 cites
- 2046US2008017022A1Hydraulic control system for working machineKOBELCO CONSTR MACHINERY LTD·Filed 2007·Application pending·0 cites
- 2145US2014307175A1Lighting device, display device and television deviceSHARP KK·Filed 2012·Application pending·0 cites
- 2244US7131453B2Hydraulic valve device and method for assembling the sameKOBELCO CONSTR MACHINERY LTD·Filed 2004·Granted Nov 7, 2006·2 cites·15 claims
- 2341US2006265915A1Working machineKOBELCO CONSTR MACHINERY LTD·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →