Inventor · disambiguated record
James A. Ulrich
Also filed as: ULRICH JAMES · ULRICH JAMES A
9 granted patents·1 pending application·101 citations·filing 1978–2022
87Inventor score
Files withROCKWELL AUTOMATION TECH INC4DRS POWER & CONTROL TECHNOLOGI2DRS POWER & TECHNOLOGIES INC1GRITTER DAVID J1J V MANUFACTURING & WELDING IN1
Top patents by PatentIndex Score
10 records- 0192US11641167B1Transformerless parallel AFE with ground current regulatorROCKWELL AUTOMATION TECH INC·Filed 2022·Granted May 2, 2023·3 cites·20 claims
- 0292US4232599AWaste paper compacter with front access featuresJ V MANUFACTURING & WELDING IN·Filed 1978·Granted Nov 11, 1980·57 cites·14 claims
- 0390US10476381B1Power conversion system and filter thereforROCKWELL AUTOMATION TECH INC·Filed 2018·Granted Nov 12, 2019·7 cites·20 claims
- 0485US10008952B1Power conversion system with conditioner capacitor discharge apparatusROCKWELL AUTOMATION TECH INC·Filed 2016·Granted Jun 26, 2018·5 cites·20 claims
- 0575US7894224B2Voltage drive system with hysteretic current control and method of operating the sameDRS POWER & TECHNOLOGIES INC·Filed 2008·Granted Feb 22, 2011·16 cites·23 claims
- 0674US10389213B2Apparatus for reduced voltage stress on AC motors and cablesROCKWELL AUTOMATION TECH INC·Filed 2016·Granted Aug 20, 2019·1 cites·20 claims
- 0750US6604056B2Method and system of harmonic regulationDRS POWER & CONTROL TECHNOLOGI·Filed 2001·Granted Aug 5, 2003·8 cites·40 claims
- 0842US6681190B2Method and system of harmonic regulationDRS POWER & CONTROL TECHNOLOGI·Filed 2003·Granted Jan 20, 2004·4 cites·8 claims
- 0936US2015145462A1Method and apparatus for current auto balancing for parallel converter systemsULRICH JAMES A·Filed 2013·Application pending·0 cites
- 1035US8693227B2Inverter control when feeding high impedance loadsGRITTER DAVID J·Filed 2011·Granted Apr 8, 2014·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →