Assignee
HENGST WALTER GMBH & CO KG
DE·22 granted patents·1,224 citations·filing 1987–2003
Top patents by PatentIndex Score
22 records- 0196US6685829B1Fluid filter with a discharge dome that is fixed to the housingHENGST WALTER GMBH & CO KG·Filed 2000·Granted Feb 3, 2004·107 cites·9 claims
- 0296US6505615B2Device to deoil the crankcase ventilation gases of an internal combustion engineHENGST WALTER GMBH & CO KG·Filed 2002·Granted Jan 14, 2003·79 cites·20 claims
- 0395US5538626ALiquid filterHENGST WALTER GMBH & CO KG·Filed 1994·Granted Jul 23, 1996·108 cites·19 claims
- 0495US5176483ADetachment lock for a bolt connectionHENGST WALTER GMBH & CO KG·Filed 1991·Granted Jan 5, 1993·161 cites·11 claims
- 0594US4906365AFilter for cleaning lubricating oilHENGST WALTER GMBH & CO KG·Filed 1988·Granted Mar 6, 1990·106 cites·8 claims
- 0693US5922196ALiquid filter with connection flangeHENGST WALTER GMBH & CO KG·Filed 1996·Granted Jul 13, 1999·109 cites·10 claims
- 0792US6569326B1Fluid filter with a central component which can be assembledHENGST WALTER GMBH & CO KG·Filed 2000·Granted May 27, 2003·70 cites·8 claims
- 0891US6635105B2Electrostatic precipitatorHENGST WALTER GMBH & CO KG·Filed 2001·Granted Oct 21, 2003·61 cites·15 claims
- 0988US5468386AFilter assembly and preassembled drain valve unit thereforHENGST WALTER GMBH & CO KG·Filed 1994·Granted Nov 21, 1995·73 cites·19 claims
- 1086US4948503AOil filter cover in combination with an oil filter cartridgeHENGST WALTER GMBH & CO KG·Filed 1988·Granted Aug 14, 1990·50 cites·2 claims
- 1181US6921479B2Fluid filter with removable central component with additional retainerHENGST WALTER GMBH & CO KG·Filed 2000·Granted Jul 26, 2005·26 cites·2 claims
- 1281US6016923AFilter cartridge for a filter for filtering liquid or gaseous mediaHENGST WALTER GMBH & CO KG·Filed 1996·Granted Jan 25, 2000·56 cites·21 claims
- 1381US5718825ALiquid filter, in particular fuel or oil filterHENGST WALTER GMBH & CO KG·Filed 1995·Granted Feb 17, 1998·64 cites·11 claims
- 1477US5660729AFilter cartridge for a filter for filtering liquid or gaseous mediaHENGST WALTER GMBH & CO KG·Filed 1996·Granted Aug 26, 1997·49 cites·24 claims
- 1574US6926825B2Fluid filter with removable central component with additional retainerHENGST WALTER GMBH & CO KG·Filed 2003·Granted Aug 9, 2005·16 cites·17 claims
- 1671US5603829ADevice for centrifugally and mechanically separating particulate contaminants from lube oilHENGST WALTER GMBH & CO KG·Filed 1994·Granted Feb 18, 1997·29 cites·13 claims
- 1759US6696671B2Device for heating a meltable materialHENGST WALTER GMBH & CO KG·Filed 2001·Granted Feb 24, 2004·5 cites·11 claims
- 1851US6173859B1Filter housing with irregular ribHENGST WALTER GMBH & CO KG·Filed 1997·Granted Jan 16, 2001·23 cites·6 claims
- 1951US4811719AFuel preheaterHENGST WALTER GMBH & CO KG·Filed 1987·Granted Mar 14, 1989·14 cites·4 claims
- 2041US4793407AHeat exchanger for two fluid mediaHENGST WALTER GMBH & CO KG·Filed 1987·Granted Dec 27, 1988·7 cites·7 claims
- 2139US6616817B1Electrodeposition deviceHENGST WALTER GMBH & CO KG·Filed 2000·Granted Sep 9, 2003·3 cites·4 claims
- 2238US4729427AHeat exchangerHENGST WALTER GMBH & CO KG·Filed 1987·Granted Mar 8, 1988·8 cites·14 claims
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