Inventor · disambiguated record
Andrew H. Nippert
Also filed as: NIPPERT ANDREW · NIPPERT ANDREW H · NIPPERT ANDREW HENRY
15 granted patents·762 citations·filing 1991–2019
95Inventor score
Files withCATERPILLAR INC15
Top patents by PatentIndex Score
15 records- 0198US5600237AMethod and apparatus for determining the position of an armature in an electromagnetic actuator by measuring the driving voltage frequencyCATERPILLAR INC·Filed 1995·Granted Feb 4, 1997·135 cites·6 claims
- 0297US6655136B2System and method for accumulating hydraulic fluidCATERPILLAR INC·Filed 2001·Granted Dec 2, 2003·85 cites·24 claims
- 0397US5481187AMethod and apparatus for determining the position of an armature in an electromagnetic actuatorCATERPILLAR INC·Filed 1991·Granted Jan 2, 1996·134 cites·4 claims
- 0492US6681571B2Digital controlled fluid translating deviceCATERPILLAR INC·Filed 2001·Granted Jan 27, 2004·42 cites·23 claims
- 0590US6739127B2Hydraulic system pump charging and recirculation apparatusCATERPILLAR INC·Filed 2002·Granted May 25, 2004·38 cites·20 claims
- 0690US5578904AMethod and apparatus for determining the position of an armature of an electromagnetic actuator in response to the magnitude and time derivative of the actuator coil currentCATERPILLAR INC·Filed 1995·Granted Nov 26, 1996·40 cites·8 claims
- 0789US6651545B2Fluid translating deviceCATERPILLAR INC·Filed 2001·Granted Nov 25, 2003·37 cites·12 claims
- 0889US6389343B1Steering resistance deviceCATERPILLAR INC·Filed 2000·Granted May 14, 2002·47 cites·27 claims
- 0989US5856771ASolenoid actuator assemblyCATERPILLAR INC·Filed 1994·Granted Jan 5, 1999·54 cites·18 claims
- 1087US5137254APressure compensated flow amplifying poppet valveCATERPILLAR INC·Filed 1991·Granted Aug 11, 1992·57 cites·24 claims
- 1178US5208570ASolenoid construction and method for making sameCATERPILLAR INC·Filed 1992·Granted May 4, 1993·29 cites·14 claims
- 1275US6431050B1Apparatus for multiplexing a plurality of hydraulic cylindersCATERPILLAR INC·Filed 2000·Granted Aug 13, 2002·24 cites·11 claims
- 1368US5865156AActuator which uses fluctuating pressure from an oil pump that powers a hydraulically actuated fuel injectorCATERPILLAR INC·Filed 1997·Granted Feb 2, 1999·27 cites·14 claims
- 1451US11118636B2Clutch control valve assembly having armature with anti-adhesion surface treatmentCATERPILLAR INC·Filed 2019·Granted Sep 14, 2021·0 cites·15 claims
- 1546US5986530ASolenoid and method for manufacturingCATERPILLAR INC·Filed 1998·Granted Nov 16, 1999·13 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →