Inventor · disambiguated record
Naoki Hagiwara
Also filed as: HAGIWARA NAOKI
23 granted patents·3 pending applications·128 citations·filing 1982–2025
94Inventor score
Files withHITACHI CONSTRUCTION MACH CO8NOK CORP7HAGIWARA NAOKI3ALPS ELECTRIC CO LTD2ASHIZAWA FINETECH LTD2
Top patents by PatentIndex Score
26 records- 0192US10612660B2GasketNOK CORP·Filed 2017·Granted Apr 7, 2020·15 cites·4 claims
- 0292US8516805B2Hydraulic driving device for work machineHAGIWARA NAOKI·Filed 2010·Granted Aug 27, 2013·13 cites·5 claims
- 0389US12188204B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2020·Granted Jan 7, 2025·2 cites·5 claims
- 0486US6384867B1Video display apparatus capable of displaying video signals of a plurality of types with different specificationsALPS ELECTRIC CO LTD·Filed 2000·Granted May 7, 2002·39 cites·6 claims
- 0582US8650778B2Hydraulic drive device for hydraulic working machineOKANO YASUO·Filed 2010·Granted Feb 18, 2014·6 cites·6 claims
- 0680US8589038B2Hydraulic drive apparatus for construction equipmentHAGIWARA NAOKI·Filed 2010·Granted Nov 19, 2013·9 cites·8 claims
- 0779US11988285B2Sealing device and sealing structureNOK CORP·Filed 2019·Granted May 21, 2024·2 cites·7 claims
- 0876US11041290B2Locking system for a work machineHITACHI CONSTRUCTION MACH CO·Filed 2019·Granted Jun 22, 2021·3 cites·6 claims
- 0965US7002605B1Image display apparatus for fixing luminance of blank area and varying only luminance of imageSONY CORP·Filed 2000·Granted Feb 21, 2006·8 cites·15 claims
- 1062US9511374B2Horizontal dry millASHIZAWA FINETECH LTD·Filed 2012·Granted Dec 6, 2016·1 cites·6 claims
- 1162US8919115B2Hydraulic drive device for hydraulic excavatorHAGIWARA NAOKI·Filed 2011·Granted Dec 30, 2014·4 cites·4 claims
- 1259US2025264159A1Sealing Device And Sealing StructureNOK CORP·Filed 2025·Application pending·0 cites
- 1356US12037775B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2020·Granted Jul 16, 2024·0 cites·6 claims
- 1456US11885108B2Work machine and periphery monitoring systemHITACHI CONSTRUCTION MACH CO·Filed 2020·Granted Jan 30, 2024·0 cites·5 claims
- 1555US11391373B2GasketNOK CORP·Filed 2018·Granted Jul 19, 2022·0 cites·8 claims
- 1654US11313469B2Sealing structureNOK CORP·Filed 2018·Granted Apr 26, 2022·0 cites·6 claims
- 1752US2025067341A1Gasket mounting structureNOK CORP·Filed 2022·Application pending·0 cites
- 1851US12025227B2GasketNOK CORP·Filed 2019·Granted Jul 2, 2024·0 cites·8 claims
- 1951US7113211B1Video signal processing circuit, viewfinder apparatus, television camera, and image monitor apparatusSONY CORP·Filed 2000·Granted Sep 26, 2006·1 cites·16 claims
- 2049US12486641B2Construction machine including a controller performing an operation limiting process for limiting an operation for moving a working device of the construction machineHITACHI CONSTRUCTION MACH CO·Filed 2020·Granted Dec 2, 2025·0 cites·2 claims
- 2148US4540915AFluorescent lamp and phosphor coating composition used thereforHITACHI LTD·Filed 1982·Granted Sep 10, 1985·13 cites·11 claims
- 2245US11739503B2Hydraulic excavatorHITACHI CONSTRUCTION MACH CO·Filed 2019·Granted Aug 29, 2023·0 cites·3 claims
- 2345US6515643B1Image display apparatus suited to viewfinderALPS ELECTRIC CO LTD·Filed 1999·Granted Feb 4, 2003·12 cites·7 claims
- 2444US2015224510A1Classifier-equipped media-agitation type pulverizerASHIZAWA FINETECH LTD·Filed 2013·Application pending·0 cites
- 2540US12000115B2Hydraulic excavatorHITACHI CONSTRUCTION MACH CO·Filed 2019·Granted Jun 4, 2024·0 cites·6 claims
- 2639US12060697B2Work machine for determining condition for recording and retaining videoHITACHI CONSTRUCTION MACH CO·Filed 2021·Granted Aug 13, 2024·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →