Inventor · disambiguated record
Ralf Strumpler
Also filed as: STRUEMPLER RALF · STRUMPLER RALF
24 granted patents·1 pending application·686 citations·filing 1991–2006
97Inventor score
Top patents by PatentIndex Score
25 records- 0196US6738246B1Electrical circuit breaker for protecting against overcurrentsABB RESEARCH LTD·Filed 2000·Granted May 18, 2004·101 cites·18 claims
- 0294US5313184AResistor with PTC behaviorASEA BROWN BOVERI·Filed 1992·Granted May 17, 1994·73 cites·17 claims
- 0393US5414403ACurrent-limiting componentABB RESEARCH LTD·Filed 1993·Granted May 9, 1995·72 cites·24 claims
- 0488US5990778ACurrent-limiting resistor having PTC behaviorABB RESEARCH LTD·Filed 1998·Granted Nov 23, 1999·54 cites·8 claims
- 0586US5416462AElectrical resistance elementABB RESEARCH LTD·Filed 1993·Granted May 16, 1995·45 cites·20 claims
- 0684US5858533AComposite materialABB RESEARCH LTD·Filed 1997·Granted Jan 12, 1999·40 cites·11 claims
- 0779US6563683B1Electrical switchgearABB RESEARCH LTD·Filed 1999·Granted May 13, 2003·45 cites·12 claims
- 0878US6469611B1Non-linear resistance with varistor behavior and method for the production thereofABB RESEARCH LTD·Filed 1999·Granted Oct 22, 2002·33 cites·20 claims
- 0976US5602520AElectrical resistance element and use of this resistance element in a current limiterABB RESEARCH LTD·Filed 1994·Granted Feb 11, 1997·28 cites·25 claims
- 1072US6613993B1Microrelay working parallel to the substrateABB RESEARCH LTD·Filed 2000·Granted Sep 2, 2003·16 cites·22 claims
- 1172US5925467AElectrically and thermally conductive plastic and use of this plasticABB RESEARCH LTD·Filed 1996·Granted Jul 20, 1999·34 cites·12 claims
- 1271US6492799B1Monitor circuit for a current limiting deviceABB RESEARCH LTD·Filed 2000·Granted Dec 10, 2002·19 cites·18 claims
- 1370US6429766B1Electrical device comprising a PTC polymer element for overcurrent fault and short-circuit fault protectionABB RESEARCH LTD·Filed 2001·Granted Aug 6, 2002·8 cites·15 claims
- 1470US5248890AValance specific lanthanide doped optoelectronic metal fluoride semiconductor deviceFORSCHUNGSZENTRUM JUELICH GMBH·Filed 1991·Granted Sep 28, 1993·28 cites·15 claims
- 1569US6628485B1Apparatus for limiting an electrical currentABB RESEARCH LTD·Filed 2000·Granted Sep 30, 2003·17 cites·10 claims
- 1668US6515570B2Fuse with overstoichiometric amount of oxidantABB RESEARCH LTD·Filed 2000·Granted Feb 4, 2003·14 cites·28 claims
- 1761US7524166B2Compressor cleaning systemABB RESEARCH LTD·Filed 2006·Granted Apr 28, 2009·8 cites·20 claims
- 1861US5861795ACurrent-limiting resistor having PTC behaviorABB RESEARCH LTD·Filed 1997·Granted Jan 19, 1999·16 cites·15 claims
- 1959US6157290AResistor elementABB RESEARCH LTD·Filed 1999·Granted Dec 5, 2000·13 cites·14 claims
- 2056US7109560B2Micro-electromechanical system and method for production thereofABB RESEARCH LTD·Filed 2002·Granted Sep 19, 2006·8 cites·23 claims
- 2148US6932928B2Method of producing a PTC-resistor deviceABB RESEARCH LTD·Filed 2001·Granted Aug 23, 2005·2 cites·15 claims
- 2244US6259349B1Electrical component with a constriction in a PTC polymer elementABB RESEARCH LTD·Filed 1999·Granted Jul 10, 2001·7 cites·14 claims
- 2338US6396383B1Protective elementABB RESEARCH LTD·Filed 1998·Granted May 28, 2002·5 cites·14 claims
- 2436US2005225311A1Binary voltage indicatorABB RESEARCH LTD·Filed 2002·Application pending·0 cites
- 2535US6743989B2MicroswitchABB RESEARCH LTD·Filed 2001·Granted Jun 1, 2004·0 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when Ralf Strumpler files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →