Inventor · disambiguated record
Helmut Keller
Also filed as: KELLER HELMUT
14 granted patents·2 pending applications·303 citations·filing 1973–2004
93Inventor score
Files withBOSCH GMBH ROBERT3WELLA AG3DAIMLER CHRYSLER AG2KELLER HELMUT2WANDEL & GOLTERMANN MANAGEMENT2
Top patents by PatentIndex Score
16 records- 0195US3930304AMethod and apparatus for selective burnout trimming of integrated circuit unitsBOSCH GMBH ROBERT·Filed 1973·Granted Jan 6, 1976·67 cites·14 claims
- 0289US7089101B2Method for assisting a driver when performing driving maneuversDAIMLER CHRYSLER AG·Filed 2003·Granted Aug 8, 2006·97 cites·14 claims
- 0384US3987392ALuminescent voltage indicator circuitBOSCH GMBH ROBERT·Filed 1974·Granted Oct 19, 1976·32 cites·20 claims
- 0476US4054828ACyclically operating transistorized power switching circuit systemBOSCH GMBH ROBERT·Filed 1975·Granted Oct 18, 1977·40 cites·42 claims
- 0557US5409503AOxidation hair dye with a content of 5-aminophenyl derivatives, process for oxidative dyeing of hair and new 5-aminophenol derivativesWELLA AG·Filed 1993·Granted Apr 25, 1995·20 cites·19 claims
- 0648US4141660APrinter for data-processing machine having single operator stationKIENZLE APPARATE GMBH·Filed 1977·Granted Feb 27, 1979·7 cites·7 claims
- 0741US5859532AMethod of and measuring arrangement for metal detection with a coil device having several separately controllable regionsVALLON GMBH·Filed 1995·Granted Jan 12, 1999·15 cites·6 claims
- 0839US2007051547A1Method for assisting the driver during driving maneuversDAIMLER CHRYSLER AG·Filed 2004·Application pending·0 cites
- 0937US5865856A2, 5-diaminobenzonitrile compounds and oxidation hair dye compositions containing sameWELLA AG·Filed 1997·Granted Feb 2, 1999·3 cites·12 claims
- 1037US5675335AMethod of improving the distortion behavior of analog-to-digital convertersWANDEL & GOLTERMANN ELEKTRONIS·Filed 1995·Granted Oct 7, 1997·9 cites·4 claims
- 1136US5955954AWarning and measuring device for personal protection in electromagnetic fieldsWANDEL & GOLTERMANN MANAGEMENT·Filed 1998·Granted Sep 21, 1999·8 cites·18 claims
- 1235US2006113119A1Method and device for assisting a driver of a vehicle during a parking maneuverDUDECK INGO·Filed 2003·Application pending·0 cites
- 1329US5877619ABattery-operated hand field-strength meter and method of null balancing sameWANDEL & GOLTERMANN MANAGEMENT·Filed 1996·Granted Mar 2, 1999·3 cites·3 claims
- 1428US4957743AMethod for treating herpesKELLER HELMUT·Filed 1986·Granted Sep 18, 1990·1 cites·4 claims
- 1528US4889716AMethod for treating herpes and chronic inflammatory intestinal tract diseaseKELLER HELMUT·Filed 1988·Granted Dec 26, 1989·1 cites·5 claims
- 1624US5935562APermanent process and agentWELLA AG·Filed 1996·Granted Aug 10, 1999·0 cites·5 claims
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