Inventor · disambiguated record
Hidekazu Tokushima
Also filed as: TOKUSHIMA HIDEKAZU
12 granted patents·1 pending application·180 citations·filing 1996–2014
90Inventor score
Top patents by PatentIndex Score
13 records- 0191US5834870AOil impregnated porous bearing units and motors provided with sameHITACHI LTD·Filed 1997·Granted Nov 10, 1998·58 cites·26 claims
- 0289US6756715B2Spindle motorHITACHI POWDERED METALS·Filed 2003·Granted Jun 29, 2004·31 cites·11 claims
- 0382US6851859B2Bearing unit, production method therefor and spindle motorHITACHI POWDERED METALS·Filed 2003·Granted Feb 8, 2005·18 cites·12 claims
- 0480US9637811B2Iron-based sintered sliding member and production method thereforHITACHI POWDERED METALS·Filed 2012·Granted May 2, 2017·3 cites·9 claims
- 0573US5645355ABearing unitHITACHI LTD·Filed 1996·Granted Jul 8, 1997·27 cites·6 claims
- 0670US9441286B2Oil-impregnated sintered bearing and production method thereforHITACHI POWDERED METALS·Filed 2012·Granted Sep 13, 2016·1 cites·6 claims
- 0766US6737016B2Process for manufacturing sintered slide bearingHITACHI POWDERED METALS·Filed 2002·Granted May 18, 2004·10 cites·12 claims
- 0862US9631669B2Oil-impregnated sintered bearing and production method thereforHITACHI CHEMICAL CO LTD·Filed 2014·Granted Apr 25, 2017·1 cites·3 claims
- 0958US10150162B2Iron-based sintered alloy for sliding member and production method thereforHITACHI CHEMICAL CO LTD·Filed 2014·Granted Dec 11, 2018·0 cites·6 claims
- 1058US6822358B2Spindle motor and manufacture thereofHITACHI LTD·Filed 2002·Granted Nov 23, 2004·7 cites·16 claims
- 1158US5821655AMagnetic fluid bearing unit structure and motor having the sameHITACHI LTD·Filed 1997·Granted Oct 13, 1998·24 cites·16 claims
- 1247US9404535B2Sliding bearing assemblyHITACHI CHEMICAL CO LTD·Filed 2013·Granted Aug 2, 2016·0 cites·6 claims
- 1343US2008010832A1Production method for sintered fluid dynamic pressure bearingHITACHI POWDERED METALS·Filed 2007·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →