Assignee
MAHLE GMBH
DE·143 granted patents·6 pending applications·2,288 citations·filing 1974–2007
Top patents by PatentIndex Score
149 records- 0197US6729291B1Multipart cooled piston for an internal combustion engineMAHLE GMBH·Filed 2003·Granted May 4, 2004·48 cites·1 claims
- 0297US6026777APiston having a barrel of forged steel and a cooling channelMAHLE GMBH·Filed 1999·Granted Feb 22, 2000·81 cites·1 claims
- 0396US6698391B1Multipart cooled piston for a combustion engineMAHLE GMBH·Filed 2002·Granted Mar 2, 2004·40 cites·7 claims
- 0496US6659062B1Cooled piston for internal combustion enginesMAHLE GMBH·Filed 2000·Granted Dec 9, 2003·41 cites·4 claims
- 0596US5261363APiston with separate head and skirtMAHLE GMBH·Filed 1993·Granted Nov 16, 1993·64 cites·10 claims
- 0693US5778533AMethod of producing a one-part cooling duct pistonMAHLE GMBH·Filed 1995·Granted Jul 14, 1998·80 cites·6 claims
- 0793US4334507APiston for an internal combustion engine and method for producing sameMAHLE GMBH·Filed 1980·Granted Jun 15, 1982·63 cites·11 claims
- 0889US6698392B1Single-part cooling channel piston for a combustion engineMAHLE GMBH·Filed 2002·Granted Mar 2, 2004·25 cites·7 claims
- 0988US7131418B2Cooled piston for an internal combustion engineMAHLE GMBH·Filed 2003·Granted Nov 7, 2006·30 cites·7 claims
- 1088US6763758B2Multi-part cooled piston for an internal combustion engineMAHLE GMBH·Filed 2002·Granted Jul 20, 2004·25 cites·13 claims
- 1187US7584694B2Composite piston for an internal combustion engineMAHLE GMBH·Filed 2005·Granted Sep 8, 2009·12 cites·2 claims
- 1286US7415959B2Cooling channel cover for a piston of an internal combustion engineMAHLE GMBH·Filed 2005·Granted Aug 26, 2008·11 cites·2 claims
- 1386US6957638B2Piston for an internal combustion engineMAHLE GMBH·Filed 2003·Granted Oct 25, 2005·22 cites·4 claims
- 1486US6892689B2Cooling duct piston for a direct-injection diesel engineMAHLE GMBH·Filed 2001·Granted May 17, 2005·23 cites·6 claims
- 1586US6772846B1Method for drilling shaker bores into the cooling channel of a single-part pistonMAHLE GMBH·Filed 2003·Granted Aug 10, 2004·22 cites·6 claims
- 1686US5052280ACoolable trunk piston for internal combustion enginesMAHLE GMBH·Filed 1987·Granted Oct 1, 1991·69 cites·24 claims
- 1785US6453797B1Piston for an internal combustion engineMAHLE GMBH·Filed 1999·Granted Sep 24, 2002·41 cites·3 claims
- 1884US7380536B2Combustion bowl in the crown of a piston for a diesel engineMAHLE GMBH·Filed 2005·Granted Jun 3, 2008·15 cites·9 claims
- 1984US6938603B2Method for the production of a one-piece piston for an internal combustion engineMAHLE GMBH·Filed 2003·Granted Sep 6, 2005·21 cites·10 claims
- 2084US5257603ACoated piston and process for applying coatingMAHLE GMBH·Filed 1992·Granted Nov 2, 1993·45 cites·12 claims
- 2183US7806098B2Cylinder sleeve for an internal combustion engineMAHLE GMBH·Filed 2005·Granted Oct 5, 2010·14 cites·3 claims
- 2282US6691666B1Multipart cooled piston for a combustion engine and method for manufacture thereofMAHLE GMBH·Filed 2003·Granted Feb 17, 2004·24 cites·9 claims
- 2382US5560283APiston-Cylinder assembly of an internal combustion engineMAHLE GMBH·Filed 1993·Granted Oct 1, 1996·50 cites·15 claims
- 2481US7647863B2Piston pin bearing for pistons of an internal combustion engineMAHLE GMBH·Filed 2005·Granted Jan 19, 2010·11 cites·9 claims
- 2581US6467397B1Constructed piston or piston consisting of components that are welded or soldered togetherMAHLE GMBH·Filed 2000·Granted Oct 22, 2002·26 cites·2 claims
- 2680US6938604B2Cooling channel cover for a one-piece piston of an internal combustion engineMAHLE GMBH·Filed 2003·Granted Sep 6, 2005·18 cites·14 claims
- 2780US6877473B2Diesel engine pistonMAHLE GMBH·Filed 2001·Granted Apr 12, 2005·18 cites·3 claims
- 2880US6487773B2Method of making one-piece pistonMAHLE GMBH·Filed 2001·Granted Dec 3, 2002·22 cites·8 claims
- 2979US6622613B1Multipiece pistonMAHLE GMBH·Filed 2000·Granted Sep 23, 2003·18 cites·9 claims
- 3078US7051684B2Oil inlet for an internal combustion engine piston that is provided with a cooling ductMAHLE GMBH·Filed 2003·Granted May 30, 2006·19 cites·4 claims
- 3176US7172011B2Method for the production of a lost-foam casting model for a light metal cylinder linerMAHLE GMBH·Filed 2006·Granted Feb 6, 2007·5 cites·7 claims
- 3276US5546896AArticulated, oil-cooled piston for internal combustion enginesMAHLE GMBH·Filed 1995·Granted Aug 20, 1996·36 cites·7 claims
- 3376US3971355APiston rod-connecting rod interconnections for internal combustion enginesMAHLE GMBH·Filed 1974·Granted Jul 27, 1976·32 cites·4 claims
- 3475US6722263B2Bottom covering of a cooling chamber for pistons of internal combustion enginesMAHLE GMBH·Filed 2000·Granted Apr 20, 2004·33 cites·4 claims
- 3574US7572344B2Method for the production of wear-resistant sides for a keystone ring for internal combustion engineMAHLE GMBH·Filed 2005·Granted Aug 11, 2009·4 cites·6 claims
- 3674US6789460B2Multipart cooled piston for a combustion engineMAHLE GMBH·Filed 2002·Granted Sep 14, 2004·16 cites·8 claims
- 3773US6820582B1Cooling channel cover for a one-piece piston of an internal combustion engineMAHLE GMBH·Filed 2003·Granted Nov 23, 2004·14 cites·15 claims
- 3873US5516425AOil filter for the cleaning of lubricating oilMAHLE GMBH·Filed 1995·Granted May 14, 1996·49 cites·6 claims
- 3973US4704950APlunger piston for internal combustion enginesMAHLE GMBH·Filed 1987·Granted Nov 10, 1987·31 cites·4 claims
- 4071US6202619B1Piston with a central cooling chamberMAHLE GMBH·Filed 1998·Granted Mar 20, 2001·22 cites·6 claims
- 4171US5357920ACooled multi-component piston for internal combustion enginesMAHLE GMBH·Filed 1991·Granted Oct 25, 1994·36 cites·5 claims
- 4270US6920860B2Cooling channel cover for a one-piece piston of an internal combustion engineMAHLE GMBH·Filed 2003·Granted Jul 26, 2005·12 cites·15 claims
- 4370US4599935APlunger piston for internal combustion enginesMAHLE GMBH·Filed 1984·Granted Jul 15, 1986·26 cites·12 claims
- 4469US7308850B2Piston for combustion engineMAHLE GMBH·Filed 2004·Granted Dec 18, 2007·11 cites·6 claims
- 4569US6647861B1Cooled piston for internal combustion enginesMAHLE GMBH·Filed 2000·Granted Nov 18, 2003·16 cites·8 claims
- 4669US6592690B1Method for hardening ring-shaped grooves by means of laser beamsMAHLE GMBH·Filed 2000·Granted Jul 15, 2003·10 cites·8 claims
- 4769US5947065APiston with cooling channelMAHLE GMBH·Filed 1996·Granted Sep 7, 1999·15 cites·7 claims
- 4869US5211101APiston with oval shaped landsMAHLE GMBH·Filed 1991·Granted May 18, 1993·24 cites·7 claims
- 4968US7305960B2Piston for an internal combustion engineMAHLE GMBH·Filed 2003·Granted Dec 11, 2007·14 cites·3 claims
- 5067US7409903B2One-piece piston for an internal combustion engineMAHLE GMBH·Filed 2004·Granted Aug 12, 2008·10 cites·8 claims
Showing the top 50 of 149 patent records by PatentIndex Score.
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