Inventor · disambiguated record
David R. Sigler
Also filed as: SIGLER DAVID · SIGLER DAVID M · SIGLER DAVID R · SIGLER DAVID RUDOLPH
84 granted patents·25 pending applications·618 citations·filing 1984–2020
99Inventor score
Files withGM GLOBAL TECH OPERATIONS LLC59SIGLER DAVID R16GM GLOBAL TECH OPERATIONS INC14GEN MOTORS CORP11KLEBER RICHARD M2
Top patents by PatentIndex Score
109 records- 0198US8525066B2Electrode for spot weldingSIGLER DAVID R·Filed 2009·Granted Sep 3, 2013·35 cites·14 claims
- 0297US8436269B2Welding electrode with contoured faceSIGLER DAVID R·Filed 2006·Granted May 7, 2013·46 cites·4 claims
- 0397US8274010B2Welding electrode with contoured faceSIGLER DAVID R·Filed 2010·Granted Sep 25, 2012·33 cites·18 claims
- 0496US8222560B2Weld electrode for attractive weld appearanceSIGLER DAVID R·Filed 2009·Granted Jul 17, 2012·46 cites·17 claims
- 0595US8052029B1Method of calibrating a friction stir spot welding systemGM GLOBAL TECH OPERATIONS INC·Filed 2010·Granted Nov 8, 2011·19 cites·16 claims
- 0695US8033443B1Anvil with rolling elements for friction stir weldingGM GLOBAL TECH OPERATIONS INC·Filed 2010·Granted Oct 11, 2011·19 cites·8 claims
- 0795US6861609B2Welding electrode for aluminum sheetsGEN MOTORS CORP·Filed 2003·Granted Mar 1, 2005·78 cites·17 claims
- 0894US9676065B2Resistance spot welding of aluminum to aluminum and steel to steelGM GLOBAL TECH OPERATIONS LLC·Filed 2012·Granted Jun 13, 2017·14 cites·20 claims
- 0994US9346118B2Forming and re-forming welding electrodes with contoured facesSIGLER DAVID R·Filed 2010·Granted May 24, 2016·11 cites·13 claims
- 1094US8927894B2Weld electrode for attractive weld appearanceSIGLER DAVID R·Filed 2008·Granted Jan 6, 2015·18 cites·16 claims
- 1193US10421148B2External heat assisted welding of dissimilar metal workpiecesGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Sep 24, 2019·5 cites·20 claims
- 1293US10335892B2Weld electrode for attractive weld appearanceGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted Jul 2, 2019·4 cites·20 claims
- 1393US10189227B2Tailored panel assembly and method of manufacturing the sameGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Jan 29, 2019·5 cites·14 claims
- 1493US8250725B2Joining polymer workpieces to other componentsSIGLER DAVID R·Filed 2007·Granted Aug 28, 2012·24 cites·20 claims
- 1592US8640320B2Method of joining by roller hemming and solid state welding and system for sameCARSLEY JOHN E·Filed 2011·Granted Feb 4, 2014·12 cites·12 claims
- 1690US10857619B2Control of intermetallic compound growth in aluminum to steel resistance weldingGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Dec 8, 2020·4 cites·11 claims
- 1790US10857618B2Improving mechanical performance of Al-steel weld joints by limiting steel sheet deformationGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Granted Dec 8, 2020·4 cites·18 claims
- 1890US9839971B2Resistance spot welding steel and aluminum workpieces with hot welding electrode at aluminum workpieceGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted Dec 12, 2017·7 cites·20 claims
- 1989US10682724B2Resistance spot welding of aluminum-to-aluminum, aluminum-to-steel, and steel-to-steel in a specified sequence and using a coverGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Jun 16, 2020·3 cites·13 claims
- 2089US10052710B2Resistance spot welding steel and aluminum workpieces using electrode weld face coverGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted Aug 21, 2018·7 cites·16 claims
- 2189US9440305B2Method of resistance spot welding aluminum alloy workpiecesGM GLOBAL TECH OPERATIONS LLC·Filed 2013·Granted Sep 13, 2016·6 cites·14 claims
- 2289US8833215B2Cutting tool for forming and re-forming welding electrodes with contoured facesSIGLER DAVID R·Filed 2012·Granted Sep 16, 2014·8 cites·17 claims
- 2389US8590768B2Battery tab joint by reaction metallurgySIGLER DAVID R·Filed 2010·Granted Nov 26, 2013·8 cites·22 claims
- 2489US8481170B2Composite manufactureVANIMISETTI SAMPATH K·Filed 2011·Granted Jul 9, 2013·9 cites·15 claims
- 2588US10766095B2Mating electrodes for resistance spot welding of aluminum workpieces to steel workpiecesGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Sep 8, 2020·3 cites·18 claims
- 2688US10500679B2Resistance welding electrode and method of resistance weldingGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Dec 10, 2019·3 cites·10 claims
- 2788US10259071B2Resistive welding electrode and method for spot welding steel and aluminum alloy workpieces with the resistive welding electrodeGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Apr 16, 2019·3 cites·20 claims
- 2888US9999939B2Resistance spot welding steel and aluminum workpieces with electrode insertGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted Jun 19, 2018·7 cites·20 claims
- 2987US8643241B2End ring assembly and method of forming sameKLEBER RICHARD M·Filed 2011·Granted Feb 4, 2014·7 cites·17 claims
- 3087US8523045B2Method of joining copper conductorsPERRY THOMAS A·Filed 2012·Granted Sep 3, 2013·6 cites·23 claims
- 3187US8350179B2Application of surface relief to spot welding electrodesGM GLOBAL TECH OPERATIONS INC·Filed 2009·Granted Jan 8, 2013·9 cites·15 claims
- 3286US11065710B2Resistance spot welding workpiece stack-ups having a steel workpiece and an aluminum workpiece with a steel plateGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Granted Jul 20, 2021·2 cites·20 claims
- 3385US11132986B2Tailored panel assembly and method of manufacturing the sameGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Granted Sep 28, 2021·1 cites·20 claims
- 3485US10058949B2Resistance spot welding steel and aluminum workpieces using insertable coverGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted Aug 28, 2018·5 cites·19 claims
- 3585US10010966B2Electrode for resistance spot welding of dissimilar metalsGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted Jul 3, 2018·4 cites·15 claims
- 3684US8785807B2Welding electrode and method of forming a resistance spot weld jointVANIMISETTI SAMPATH K·Filed 2011·Granted Jul 22, 2014·5 cites·11 claims
- 3783US9662738B2Welding electrode and method of forming a resistance spot weld jointGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted May 30, 2017·4 cites·20 claims
- 3882US11084119B2Electrode for resistance spot welding of dissimilar materialsGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Granted Aug 10, 2021·1 cites·19 claims
- 3981US10625367B2Method of resistance spot welding aluminum to steelGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Apr 21, 2020·2 cites·5 claims
- 4081US8851811B2Stabilizer for dressing electrodes and method of using the sameSIGLER DAVID R·Filed 2010·Granted Oct 7, 2014·6 cites·17 claims
- 4179US10166627B2Aluminum alloy to steel welding processGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted Jan 1, 2019·3 cites·20 claims
- 4278US10751830B2Welding electrode for use in a resistance spot welding workpiece stack-ups that include an aluminum workpiece and a steel workpieceGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Aug 25, 2020·1 cites·15 claims
- 4378US10610956B2Welding electrode cutting tool and method of using the sameGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Apr 7, 2020·2 cites·17 claims
- 4478US9987705B2Resistance spot welding of steel to pre-coated aluminumGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted Jun 5, 2018·3 cites·17 claims
- 4578US9682439B2Welding electrode with contoured faceGM GLOBAL TECH OPERATIONS LLC·Filed 2013·Granted Jun 20, 2017·3 cites·10 claims
- 4677US9737956B2Resistance spot welding thin gauge steelsGM GLOBAL TECH OPERATIONS LLC·Filed 2013·Granted Aug 22, 2017·3 cites·16 claims
- 4775US9731379B2Welding light metal workpieces by reaction metallurgyGM GLOBAL TECH OPERATIONS LLC·Filed 2015·Granted Aug 15, 2017·1 cites·20 claims
- 4875US8963042B2Welding light metal workpieces by reaction metallurgySIGLER DAVID R·Filed 2009·Granted Feb 24, 2015·3 cites·11 claims
- 4974US10245675B2Multi-stage resistance spot welding method for workpiece stack-up having adjacent steel and aluminum workpiecesGM GLOBAL TECH OPERATIONS LLC·Filed 2015·Granted Apr 2, 2019·1 cites·20 claims
- 5074US9999938B2Multi-step direct welding of an aluminum-based workpiece to a steel workpieceGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted Jun 19, 2018·2 cites·18 claims
Showing the top 50 of 109 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →