Inventor · disambiguated record
Hirokazu Shirai
Also filed as: SHIRAI HIROKAZU
11 granted patents·3 pending applications·178 citations·filing 1992–2013
90Inventor score
Files withMITSUBISHI HEAVY IND LTD4NIDEC CORP4YUTAKA GIKEN CO LTD2KABUSHI KAISHA YUTAKA GIGEN1MATSUSHITA ELECTRIC INDUSTRIAL CO LTD1
Top patents by PatentIndex Score
14 records- 0194US8025296B2Shaft sealing mechanismMITSUBISHI HEAVY IND LTD·Filed 2006·Granted Sep 27, 2011·27 cites·9 claims
- 0292US7226053B2Shaft seal mechanism, shaft seal mechanism assembling structure and large size fluid machineMITSUBISHI HEAVY IND LTD·Filed 2004·Granted Jun 5, 2007·43 cites·20 claims
- 0384US8358483B2Spindle motor including annular magnetic member and disk drive apparatus including such a spindle motorNIDEC CORP·Filed 2010·Granted Jan 22, 2013·6 cites·31 claims
- 0480US8508884B2Spindle motor including magnetic member and disk drive apparatus including sameNIDEC CORP·Filed 2012·Granted Aug 13, 2013·4 cites·20 claims
- 0580US6575198B2Method of connecting two elongated portions of metallic plate, method of manufacturing exhaust pipe of two-passage construction, and exhaust pipe of two-passage constructionYUTAKA GIKEN CO LTD·Filed 2000·Granted Jun 10, 2003·27 cites·13 claims
- 0679US8148862B2Bearing device, spindle motor and disk drive apparatusSHIRAI HIROKAZU·Filed 2009·Granted Apr 3, 2012·8 cites·18 claims
- 0769US5867985AExhaust manifold for engineYUTAKA GIKEN CO LTD·Filed 1997·Granted Feb 9, 1999·38 cites·7 claims
- 0865US7364165B2Shaft seal mechanismMITSUBISHI HEAVY IND LTD·Filed 2004·Granted Apr 29, 2008·11 cites·7 claims
- 0956US5334961AStrip-line type bandpass filterMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1992·Granted Aug 2, 1994·14 cites·6 claims
- 1053US2009165284A1Bearing mechanism manufacturing method, motor and storage disk drive apparatusNIDEC CORP·Filed 2008·Application pending·0 cites
- 1147US2009161253A1Bearing mechanism, motor and storage disk drive apparatusNIDEC CORP·Filed 2008·Application pending·0 cites
- 1246US8911152B2BearingMITSUBISHI HEAVY IND LTD·Filed 2013·Granted Dec 16, 2014·0 cites·8 claims
- 1339US10072528B2Axial-flow exhaust turbineMITSUBISHI HITACHI POWER SYS·Filed 2013·Granted Sep 11, 2018·0 cites·3 claims
- 1436US2003163918A1Method of connecting two elongated portions of metallic plate, method of manufacturing exhaust pipe of two-passage construction, and exhaust pipe of two-passage constructionKABUSHI KAISHA YUTAKA GIGEN·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →