Inventor · disambiguated record
Steven J. Geissler
Also filed as: GEISSLER STEVEN · GEISSLER STEVEN J
34 granted patents·3 pending applications·1,598 citations·filing 1991–2023
98Inventor score
Files withILLINOIS TOOL WORKS23ADVANCED ENERGY IND INC5KAUFMAN & ROBINSON INC4GEISSLER STEVEN J3MILLER ELECTRIC MFG2
Top patents by PatentIndex Score
37 records- 0199US6329636B1Method and apparatus for receiving a universal input voltage in a welding plasma or heating power sourceILLINOIS TOOL WORKS·Filed 2000·Granted Dec 11, 2001·142 cites·36 claims
- 0298US7235759B2Method and apparatus for receiving a universal input voltage in a welding, plasma or heating power sourceILLINOIS TOOL WORKS·Filed 2006·Granted Jun 26, 2007·29 cites·45 claims
- 0398US6115273APower converter with low loss switchingILLINOIS TOOL WORKS·Filed 1998·Granted Sep 5, 2000·188 cites·13 claims
- 0497US6987242B2Method and apparatus for receiving a universal input voltage in a welding, plasma or heating power sourceILLINOIS TOOL WORKS·Filed 2004·Granted Jan 17, 2006·74 cites·94 claims
- 0595US7005845B1Power measurement mechanism for a transformer coupled plasma sourceADVANCED ENERGY IND INC·Filed 2004·Granted Feb 28, 2006·55 cites·14 claims
- 0695US6815639B2Method and apparatus for receiving a universal input voltage in a welding, plasma or heating power sourceILLINOIS TOOL WORKS·Filed 2003·Granted Nov 9, 2004·51 cites·35 claims
- 0795US5343023AInduction heater having a power inverter and a variable frequency output inverterMILLER ELECTRIC MFG·Filed 1991·Granted Aug 30, 1994·109 cites·32 claims
- 0894US6822396B2Transformer ignition circuit for a transformer coupled plasma sourceADVANCED ENERGY IND INC·Filed 2003·Granted Nov 23, 2004·45 cites·21 claims
- 0994US6819096B2Power measurement mechanism for a transformer coupled plasma sourceADVANCED ENERGY IND INC·Filed 2003·Granted Nov 16, 2004·46 cites·8 claims
- 1093US7778056B2Power converter with low loss switchingGEISSLER STEVEN J·Filed 2008·Granted Aug 17, 2010·31 cites·12 claims
- 1193US7336512B2Power convertor with low loss switchingILLINOIS TOOL WORKS·Filed 2005·Granted Feb 26, 2008·36 cites·14 claims
- 1293US7245084B1Transformer ignition circuit for a transformer coupled plasma sourceADVANCED ENERGY IND INC·Filed 2004·Granted Jul 17, 2007·41 cites·10 claims
- 1393US6625046B2Power convertor with low loss switchingILLINOIS TOOL WORKS·Filed 2002·Granted Sep 23, 2003·64 cites·6 claims
- 1493US6043471AMultiple head inductive heating systemILLINOIS TOOL WORKS·Filed 1998·Granted Mar 28, 2000·131 cites·23 claims
- 1592US5783799ASeries resonant converter, and method and apparatus for control thereofILLINOIS TOOL WORKS·Filed 1996·Granted Jul 21, 1998·76 cites·34 claims
- 1690US11823867B2Load current derived switch timing of switching resonant topologyKAUFMAN & ROBINSON INC·Filed 2021·Granted Nov 21, 2023·4 cites·20 claims
- 1790US5824990APower selection and protection circuit for inverter power supplyILLINOIS TOOL WORKS·Filed 1996·Granted Oct 20, 1998·85 cites·16 claims
- 1890US5504309AInduction heater having feedback control responsive to heat outputMILLER ELECTRIC MFG·Filed 1994·Granted Apr 2, 1996·85 cites·18 claims
- 1988US6384373B1Welding power supply having improved supplemental power circuitILLINOIS TOOL WORKS·Filed 2000·Granted May 7, 2002·40 cites·20 claims
- 2087US12112919B2Load current derived switch timing of switching resonant topologyKAUFMAN & ROBINSON INC·Filed 2023·Granted Oct 8, 2024·2 cites·29 claims
- 2186US6266257B1Power convertor with low loss switchingILLINOIS TOOL WORKS·Filed 2000·Granted Jul 24, 2001·37 cites·11 claims
- 2286US6107602ASwitchable power supply with electronically controlled output curve and adaptive hot startILLINOIS TOOL WORKS·Filed 1999·Granted Aug 22, 2000·67 cites·22 claims
- 2382US6865096B1Power convertor with low loss switchingILLINOIS TOOL WORKS·Filed 2003·Granted Mar 8, 2005·35 cites·19 claims
- 2476US12413148B2Power efficient load current derived switch timing of switching resonant topologyKAUFMAN & ROBINSON INC·Filed 2023·Granted Sep 9, 2025·0 cites·20 claims
- 2574US6426888B2Power convertor with low loss switchingILLINOIS TOOL WORKS·Filed 2001·Granted Jul 30, 2002·18 cites·22 claims
- 2674US5991180AAuxiliary open circuit voltage power supplyILLINOIS TOOL WORKS·Filed 1998·Granted Nov 23, 1999·45 cites·18 claims
- 2764US9789559B2System and method for controlling multiple processes in a welding-type power source using a refined controller architectureGEISSLER STEVEN J·Filed 2007·Granted Oct 17, 2017·1 cites·17 claims
- 2863US2010193487A1Method And Apparatus For Receiving A Universal Input Voltage In A Welding, Plasma Or Heating Power SourceILLINOIS TOOL WORKS·Filed 2009·Application pending·0 cites
- 2961US5714731AWelding power supply arc starterILLINOIS TOOL WORKS·Filed 1996·Granted Feb 3, 1998·20 cites·26 claims
- 3059US2007278197A1Method And Apparatus For Receiving A Universal Input Voltage In A Welding, Plasma Or Heating Power SourceILLINOIS TOOL WORKS·Filed 2007·Application pending·0 cites
- 3156US6087628AMethod and apparatus for controlling a welding power supplyILLINOIS TOOL WORKS·Filed 1997·Granted Jul 11, 2000·17 cites·40 claims
- 3255US6911789B2Power supply for a hot-filament cathodeADVANCED ENERGY IND INC·Filed 2003·Granted Jun 28, 2005·2 cites·10 claims
- 3354US6614670B1Isolation circuit for providing isolation from a switch of a welding power supplyILLINOIS TOOL WORKS·Filed 2000·Granted Sep 2, 2003·10 cites·23 claims
- 3453US9162310B2Enhanced power factor correction for welding and cutting power suppliesGEISSLER STEVEN J·Filed 2008·Granted Oct 20, 2015·3 cites·20 claims
- 3552US7843138B2Power supply for a hot-filament cathodeKAUFMAN & ROBINSON INC·Filed 2008·Granted Nov 30, 2010·0 cites·8 claims
- 3643US6163085AMethod and apparatus for selecting input voltage for a power supplyILLINOIS TOOL WORKS·Filed 1997·Granted Dec 19, 2000·9 cites·22 claims
- 3741US2002047000A1Method and apparatus for receiving a universal input voltage in a welding, plasma or heating power sourceILLINOIS TOOL WORKS·Filed 2001·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Steven J. Geissler 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 →