Assignee
HITACHI POWDERED METALS
JP·89 granted patents·14 pending applications·1,309 citations·filing 1980–2016
Top patents by PatentIndex Score
103 records- 0196US5932946APorous bearing system having internal grooves and electric motor provided with the sameHITACHI POWDERED METALS·Filed 1998·Granted Aug 3, 1999·64 cites·6 claims
- 0292US6340377B1High-temperature wear-resistant sintered alloyHITACHI POWDERED METALS·Filed 2000·Granted Jan 22, 2002·42 cites·12 claims
- 0391US8367573B2Glass composition and its applicationsHITACHI POWDERED METALS·Filed 2009·Granted Feb 5, 2013·14 cites·37 claims
- 0489US7234871B2Sliding bearing for use under high loadHITACHI POWDERED METALS·Filed 2005·Granted Jun 26, 2007·14 cites·5 claims
- 0589US6756715B2Spindle motorHITACHI POWDERED METALS·Filed 2003·Granted Jun 29, 2004·31 cites·11 claims
- 0687US7575619B2Wear resistant sintered memberHITACHI POWDERED METALS·Filed 2006·Granted Aug 18, 2009·13 cites·19 claims
- 0787US4344795AIron-based sintered sliding productHITACHI POWDERED METALS·Filed 1980·Granted Aug 17, 1982·34 cites·11 claims
- 0886US4503009AProcess for making composite mechanical parts by sinteringHITACHI POWDERED METALS·Filed 1983·Granted Mar 5, 1985·44 cites·1 claims
- 0982US6851859B2Bearing unit, production method therefor and spindle motorHITACHI POWDERED METALS·Filed 2003·Granted Feb 8, 2005·18 cites·12 claims
- 1082US5049183ASintered machine part and methodHITACHI POWDERED METALS·Filed 1990·Granted Sep 17, 1991·32 cites·14 claims
- 1181US5259860ASintered metal parts and their production methodHITACHI POWDERED METALS·Filed 1991·Granted Nov 9, 1993·31 cites·14 claims
- 1280US9637811B2Iron-based sintered sliding member and production method thereforHITACHI POWDERED METALS·Filed 2012·Granted May 2, 2017·3 cites·9 claims
- 1380US7572312B2Sintered valve seat and production method thereforHITACHI POWDERED METALS·Filed 2006·Granted Aug 11, 2009·7 cites·13 claims
- 1480US6080358AMethod for forming compactsHITACHI POWDERED METALS·Filed 1998·Granted Jun 27, 2000·25 cites·8 claims
- 1580US5895119AComposite porous bearingHITACHI POWDERED METALS·Filed 1996·Granted Apr 20, 1999·28 cites·12 claims
- 1680US5834664AWear-resistant sintered alloy, and its production methodHITACHI POWDERED METALS·Filed 1997·Granted Nov 10, 1998·35 cites·18 claims
- 1780US4783898AMethod of producing a shaft having plate-like member joined theretoHITACHI POWDERED METALS·Filed 1987·Granted Nov 15, 1988·28 cites·11 claims
- 1879US5437545AMethod and apparatus for extruding powdered materialHITACHI POWDERED METALS·Filed 1993·Granted Aug 1, 1995·25 cites·11 claims
- 1979US5326526ASintered iron alloy composition and method of manufacturing the sameHITACHI POWDERED METALS·Filed 1991·Granted Jul 5, 1994·26 cites·18 claims
- 2079US5156854APress forming apparatus for sintered partsHITACHI POWDERED METALS·Filed 1992·Granted Oct 20, 1992·23 cites·1 claims
- 2179US4702771AWear-resistant, sintered iron alloy and process for producing the sameHITACHI POWDERED METALS·Filed 1986·Granted Oct 27, 1987·28 cites·14 claims
- 2279US4648903AIron base sintered, wear-resistant materials and method for producing the sameHITACHI POWDERED METALS·Filed 1985·Granted Mar 10, 1987·25 cites·6 claims
- 2378US6616726B2Material for valve guidesHITACHI POWDERED METALS·Filed 2001·Granted Sep 9, 2003·12 cites·9 claims
- 2478US4552590AFerro-sintered alloysHITACHI POWDERED METALS·Filed 1983·Granted Nov 12, 1985·21 cites·2 claims
- 2577US5810479AHydrodynamic thrust porous bearingHITACHI POWDERED METALS·Filed 1997·Granted Sep 22, 1998·30 cites·13 claims
- 2675US6852143B2Turbo component for turbochargerHITACHI POWDERED METALS·Filed 2002·Granted Feb 8, 2005·11 cites·2 claims
- 2775US6660056B2Valve seat for internal combustion enginesHITACHI POWDERED METALS·Filed 2001·Granted Dec 9, 2003·10 cites·14 claims
- 2875US4422875AFerro-sintered alloysHITACHI POWDERED METALS·Filed 1981·Granted Dec 27, 1983·19 cites·1 claims
- 2974US6498424B1Field emission type cathode, electron emission apparatus and electron emission apparatus manufacturing methodHITACHI POWDERED METALS·Filed 2000·Granted Dec 24, 2002·10 cites·42 claims
- 3073US5722036AManufacturing process of connecting rod assembly and compacting dieHITACHI POWDERED METALS·Filed 1996·Granted Feb 24, 1998·33 cites·16 claims
- 3173US5545487AWear-resistant sintered aluminum alloy and method for producing the sameHITACHI POWDERED METALS·Filed 1995·Granted Aug 13, 1996·24 cites·8 claims
- 3273US5409531AReleasing agent for die castingHITACHI POWDERED METALS·Filed 1993·Granted Apr 25, 1995·17 cites·7 claims
- 3372US7892481B2Manufacturing method for wear resistant sintered member, sintered valve seat, and manufacturing method thereforHITACHI POWDERED METALS·Filed 2006·Granted Feb 22, 2011·4 cites·15 claims
- 3472US6562098B1Wear resistant sintered memberHITACHI POWDERED METALS·Filed 2002·Granted May 13, 2003·14 cites·19 claims
- 3571US7556864B2Sintered gearHITACHI POWDERED METALS·Filed 2003·Granted Jul 7, 2009·16 cites·7 claims
- 3671US6120727AManufacturing method of sintered composite machine component having inner part and outer partHITACHI POWDERED METALS·Filed 1999·Granted Sep 19, 2000·34 cites·13 claims
- 3770US9441286B2Oil-impregnated sintered bearing and production method thereforHITACHI POWDERED METALS·Filed 2012·Granted Sep 13, 2016·1 cites·6 claims
- 3870US4935056AWear-resistant copper-base sintered oil-containing bearing materialsHITACHI POWDERED METALS·Filed 1989·Granted Jun 19, 1990·17 cites·1 claims
- 3969US7870674B2Production method for oil-impregnated sintered bearingHITACHI POWDERED METALS·Filed 2005·Granted Jan 18, 2011·2 cites·5 claims
- 4069US5682588AMethod for producing ferrous sintered alloy having quenched structureHITACHI POWDERED METALS·Filed 1996·Granted Oct 28, 1997·22 cites·3 claims
- 4168US7947219B2Process for manufacturing composite sintered machine componentsHITACHI POWDERED METALS·Filed 2007·Granted May 24, 2011·2 cites·4 claims
- 4268US7601196B2Alloy powder for forming hard phase and ferriferous mixed powder using the same, and manufacturing method for wear resistant sintered alloy and wear resistant sintered alloyHITACHI POWDERED METALS·Filed 2007·Granted Oct 13, 2009·1 cites·8 claims
- 4368US6758662B2Die for die compacting of powdered materialHITACHI POWDERED METALS·Filed 2001·Granted Jul 6, 2004·13 cites·12 claims
- 4468US5824922AWear-resistant sintered alloy, and its production methodHITACHI POWDERED METALS·Filed 1997·Granted Oct 20, 1998·21 cites·18 claims
- 4567US9260772B2Hard phase forming alloy powder, wear resistant sintered alloy, and production method for wear resistant sintered alloyHITACHI POWDERED METALS·Filed 2012·Granted Feb 16, 2016·0 cites·9 claims
- 4667US5746516APorous bearing system having internal grooves and electric motor provided with the sameHITACHI POWDERED METALS·Filed 1996·Granted May 5, 1998·25 cites·5 claims
- 4767US4379762AMethod of producing picture tube coating compositionsHITACHI POWDERED METALS·Filed 1980·Granted Apr 12, 1983·18 cites·3 claims
- 4866US7553445B2Manufacturing processes of sintered alloy and oil-impregnated sintered bearingHITACHI POWDERED METALS·Filed 2004·Granted Jun 30, 2009·9 cites·14 claims
- 4966US6737016B2Process for manufacturing sintered slide bearingHITACHI POWDERED METALS·Filed 2002·Granted May 18, 2004·10 cites·12 claims
- 5066US5529602ASintered iron alloy resistant to abrasion at high temperature and method of manufacturing the sameHITACHI POWDERED METALS·Filed 1995·Granted Jun 25, 1996·21 cites·11 claims
Showing the top 50 of 103 patent records by PatentIndex Score.
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