Inventor
Robert D. Lorenz
Inventor
Madison, WI, US
Overview
Patents· 36 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Pprimary
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters17%
H02KDynamo-electric machines10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
G01RMeasuring electric variables6%
Y02TClimate change mitigation technologies related to transportation6%
B60LPropulsion of electrically-propelled vehicles5%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure5%
G05BControl or regulating systems in general5%
H01FMagnets5%
H02JElectric power networks5%
PatentTitleYear
11,085,977Method and apparatus for integrating current sensors in a power semiconductor module202111,011,965Permanent magnet synchronous motor202110,784,804Magnetization state control method and magnetization state control device202010,763,769Controller for power convertor and motor driving system202010,547,261Variable magnetization machine controller202010,491,065Permanent magnet synchronous motor201910,483,892Variable magnetization machine controller201910,171,019Controller for power converter201910,146,211Variable magnetization machine controller20189,692,265'Variable magnetic flux-type rotary electric machine'20179,647,583'Variable magnetization machine controller'20179,577,484'Variable magnetomotive force rotary electric machine and control device for variable magnetomotive force rotary electric machine'20179,281,772'Controller for power converter'20169,214,861'Loss optimization control for DC-to-DC converter'20159,116,197'Integrated interconnect and magnetic-field detector for current sensing'20158,531,143'Permanent magnet motor with stator-based saliency for position sensorless drive'20137,522,434'Temperature estimation based on a signal oscillation'20096,856,850'Controlling web tension, and accumulating lengths of web, using a festoon'20056,714,852'Observer for engine crankshaft torque'20046,473,669'Controlling web tension, and accumulating lengths of web, by actively controlling velocity and acceleration of a festoon'20026,336,070'Apparatus and method for engine crankshaft torque ripple control in a hybrid electric vehicle'20026,314,333'Method and apparatus for controlling web tension by actively controlling velocity and acceleration of a dancer roll'20015,714,831'Method and apparatus for improved control of piezoelectric positioners'19985,659,480'Method for coordinating motion control of a multiple axis machine'19975,585,709'Method and apparatus for transducerless position and velocity estimation in drives for AC machines'19965,565,752'Method and apparatus for transducerless position and velocity estimation in drives for AC machines'19965,559,419'Method and apparatus for transducerless flux estimation in drives for induction machines'19965,341,083'Contactless battery charging system'19945,341,280'Contactless coaxial winding transformer power transfer system'19945,334,923'Motor torque control method and apparatus'19945,301,096'Submersible contactless power delivery system'19945,261,266'Sensor tip for a robotic gripper and method of manufacture'19935,157,319'Contactless battery charging system'19925,010,773'Sensor tip for a robotic gripper and method of manufacture'19914,982,611'Multiple-degree-of-freedom sensor tip for a robotic gripper'19914,708,483'Optical measuring apparatus and method'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–2021Based in Madison, WI, US· patent location history
1991–2021Patents assigned to WISCONSIN ALUMNI RES FOUND (25)· patent assignee history
1992–1994Patents assigned to ELECTRIC POWER RES INST (4)· patent assignee history
2001–2005Patents assigned to KIMBERLY CLARK CO (3)· patent assignee history
2017–2021Patents assigned to NISSAN MOTOR (9)· patent assignee history
2017Patents assigned to KATO TAKASHI (2)· patent assignee history
2021Based in Madison, NJ, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WISCONSIN ALUMNI RES FOUND | 25 | 1991–2021 |
| NISSAN MOTOR | 9 | 2017–2021 |
| ELECTRIC POWER RES INST | 4 | 1992–1994 |
| KIMBERLY CLARK CO | 3 | 2001–2005 |
| KATO TAKASHI | 2 | 2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Madison, WI, US | 35 | 1987–2021 |
| Madison, New Jersey, US | 1 | 2021 |