Inventor · disambiguated record
Rolf Vollmer
Also filed as: VOLLMER ROLF
75 granted patents·40 pending applications·892 citations·filing 1988–2023
99Inventor score
Top patents by PatentIndex Score
115 records- 0198US7141905B2Permanent magnet synchronous machineSIEMENS AG·Filed 2005·Granted Nov 28, 2006·61 cites·22 claims
- 0293US9935534B2Electric machine with permanently excited inner statorSIEMENS AG·Filed 2015·Granted Apr 3, 2018·6 cites·6 claims
- 0393US8922072B2Electrical machine with a cooling channel and method for manufacturing the sameBOTT ERICH·Filed 2010·Granted Dec 30, 2014·17 cites·27 claims
- 0493US8378541B2Magnetic radial bearing and magnetic bearing system having a three-phase controllerSIEMENS AG·Filed 2009·Granted Feb 19, 2013·14 cites·10 claims
- 0593US7709984B2Device for determining a shaft center deviationSIEMENS AG·Filed 2006·Granted May 4, 2010·16 cites·15 claims
- 0692US6812612B2Stator for a synchronous machineSIEMENS AG·Filed 2003·Granted Nov 2, 2004·48 cites·9 claims
- 0791US7777373B2Cooling device of an electrical machineSIEMENS AG·Filed 2005·Granted Aug 17, 2010·23 cites·10 claims
- 0891US7732967B2Electrical machine comprising a winding system with coil groupsSIEMENS AG·Filed 2006·Granted Jun 8, 2010·25 cites·10 claims
- 0990US8441158B2Linear motor with reduced force rippleVOLLMER ROLF·Filed 2011·Granted May 14, 2013·11 cites·8 claims
- 1090US8134273B2Electrical machine with skew-running magnet pole boundariesVOLLMER ROLF·Filed 2007·Granted Mar 13, 2012·23 cites·8 claims
- 1190US8063517B2Combination drive with a hybrid reluctance motorBOTT ERICH·Filed 2006·Granted Nov 22, 2011·24 cites·10 claims
- 1290US8026640B2Electric machine having a rotary and a linear actuatorSIEMENS AG·Filed 2005·Granted Sep 27, 2011·20 cites·18 claims
- 1390US6943467B2Electric machine with heat pipesSIEMENS AG·Filed 2003·Granted Sep 13, 2005·46 cites·10 claims
- 1490US6768238B2Rotor for a permanent magnet synchronous machineSIEMENS AG·Filed 2002·Granted Jul 27, 2004·44 cites·14 claims
- 1589US7915777B2Ring coil motorSIEMENS AG·Filed 2007·Granted Mar 29, 2011·16 cites·13 claims
- 1689US7755315B2Rotary linear drive having a transmitter deviceSIEMENS AG·Filed 2005·Granted Jul 13, 2010·18 cites·6 claims
- 1789US6483221B1Electric motorSIEMENS AG·Filed 1999·Granted Nov 19, 2002·76 cites·7 claims
- 1888US7859160B2Electric machine with concentrated windingsSIEMENS AG·Filed 2006·Granted Dec 28, 2010·17 cites·7 claims
- 1987US8283815B2Electrical machineVOLLMER ROLF·Filed 2007·Granted Oct 9, 2012·15 cites·11 claims
- 2086US8115360B2Electric machine with stepped winding structureVOLLMER ROLF·Filed 2009·Granted Feb 14, 2012·14 cites·8 claims
- 2186US7705507B2Electrical machine having a three-phase winding systemSIEMENS AG·Filed 2007·Granted Apr 27, 2010·14 cites·7 claims
- 2284US7977826B2Multipole permanent-magnet synchronous machine having tooth-wound coilsSIEMENS AG·Filed 2005·Granted Jul 12, 2011·13 cites·10 claims
- 2384US6628031B2Harmonic-frequency synchronous machine with flux concentrationSIEMENS AG·Filed 2002·Granted Sep 30, 2003·28 cites·15 claims
- 2482US8035371B2Measuring system for detecting a rotary-linear displacement and corresponding rotary-linear driveSIEMENS AG·Filed 2008·Granted Oct 11, 2011·14 cites·18 claims
- 2581US9343935B2Rotor of a permanently excited synchronous machineSIEMENS AG·Filed 2013·Granted May 17, 2016·5 cites·14 claims
- 2681US8853894B2Cylindrical linear motor having low cogging forcesFICK MICHAEL·Filed 2012·Granted Oct 7, 2014·10 cites·16 claims
- 2781US7285883B2Drive system for linear and rotary movementsSIEMENS AG·Filed 2004·Granted Oct 23, 2007·25 cites·15 claims
- 2881US6858965B2Stator for a synchronous machineSIEMENS AG·Filed 2003·Granted Feb 22, 2005·26 cites·12 claims
- 2980US8227951B2Permanent-magnet synchronous machine having skewed magnets for reduced torque rippleGROSSMANN UDO·Filed 2009·Granted Jul 24, 2012·16 cites·10 claims
- 3080US7564158B2Three-phase synchronous machine having a permanent magnet rotor with an induction cageSIEMENS AG·Filed 2003·Granted Jul 21, 2009·24 cites·14 claims
- 3180US5911548ATool for the production of arc-shaped groovesWALTER AG·Filed 1997·Granted Jun 15, 1999·45 cites·19 claims
- 3279US10014737B2Rotor for an electric machineSIEMENS AG·Filed 2015·Granted Jul 3, 2018·2 cites·20 claims
- 3378US11451121B2Method for producing a material layer and a material layer structure for a dynamoelectric rotary machineSIEMENS AG·Filed 2019·Granted Sep 20, 2022·1 cites·19 claims
- 3478US11031838B2Housing unit for an electric machineSIEMENS AG·Filed 2018·Granted Jun 8, 2021·2 cites·16 claims
- 3578US10097055B2Permanently-excited dynamoelectric machineSIEMENS AG·Filed 2015·Granted Oct 9, 2018·2 cites·19 claims
- 3677US6879079B2Permanent magnet rotor electrical synchronous machine with different alternatively arranged tooth pitch widthsSIEMENS AG·Filed 2001·Granted Apr 12, 2005·21 cites·11 claims
- 3775US11482893B2Material layer for high rotational speedsSIEMENS AG·Filed 2019·Granted Oct 25, 2022·1 cites·11 claims
- 3875US6885187B2Transmitter system for a ferraris motion transmitterSIEMENS AG·Filed 2002·Granted Apr 26, 2005·20 cites·14 claims
- 3973US5676505AMethod and milling tool to make deep grooves in a workpiece, especially in rotors of generators and turbinesWALTER AG·Filed 1995·Granted Oct 14, 1997·39 cites·19 claims
- 4071US12129892B2Bearing bush for a rotating shaft, bearing shield, electric motor and method for manufacturing a damping elementSIEMENS AG·Filed 2022·Granted Oct 29, 2024·0 cites·10 claims
- 4171US9160206B2Permanent-magnet-excited electric motor with heating device, and operating methodPOTORADI DETLEF·Filed 2011·Granted Oct 13, 2015·5 cites·5 claims
- 4270US9673672B2Individual-segment rotor having retaining ringsSIEMENS AG·Filed 2013·Granted Jun 6, 2017·3 cites·8 claims
- 4368US12184132B2Method for manufacturing a magnetic sheet and a stack of magnetic sheets and electric machine and electric vehicleSIEMENS AG·Filed 2020·Granted Dec 31, 2024·0 cites·6 claims
- 4468US9509185B2Rotor with permanent excitation including permanent magnets and soft-magnetic flux conducting elements therebetween, electric machine having such a rotor and manufacturing method for the rotorSIEMENS AG·Filed 2013·Granted Nov 29, 2016·2 cites·18 claims
- 4566US12165804B2Electrical steel sheet with structured surface for domain refiningSIEMENS AG·Filed 2019·Granted Dec 10, 2024·0 cites·11 claims
- 4665US9401628B2Permanently excited synchronous machine with ferrite magnetsSIEMENS AG·Filed 2013·Granted Jul 26, 2016·1 cites·10 claims
- 4764US12266464B2Magnetic sheet stack, method for manufacturing a magnetic sheet stack and electric machineSIEMENS AG·Filed 2020·Granted Apr 1, 2025·0 cites·10 claims
- 4864US8674560B2Linear drive module for a rotary/linear driveBUDDE THOMAS·Filed 2008·Granted Mar 18, 2014·6 cites·10 claims
- 4963US12126230B2Method for producing a material layer with at least one recessSIEMENS AG·Filed 2021·Granted Oct 22, 2024·0 cites·16 claims
- 5063US11888362B2Method to manufacture an electric machine, installation, vehicleSOLLER THOMAS·Filed 2021·Granted Jan 30, 2024·0 cites·8 claims
Showing the top 50 of 115 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Rolf Vollmer 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 →