Inventor · disambiguated record
Donald K. Zahrte, Sr.
Also filed as: ZAHRTE DONALD · ZAHRTE DONALD K · ZAHRTE SR DONALD · ZAHRTE SR DONALD K
11 granted patents·2 pending applications·1,735 citations·filing 1991–2019
94Inventor score
Files withPOWERWARE CORP6BEST POWER TECH INC2GEN SIGNAL CORP2RENAISSANCE LEARNING INC2THE VOLLRATH CO LLC1
Top patents by PatentIndex Score
13 records- 0198US5602462AUninterruptible power systemBEST POWER TECH INC·Filed 1995·Granted Feb 11, 1997·636 cites·51 claims
- 0296US5790391AStandby power systemGEN SIGNAL CORP·Filed 1996·Granted Aug 4, 1998·211 cites·35 claims
- 0395US6292379B1Distributed internal fault bypass in a modular uninterruptible power supplyPOWERWARE CORP·Filed 2000·Granted Sep 18, 2001·271 cites·27 claims
- 0494US5315533ABack-up uninterruptible power systemBEST POWER TECH INC·Filed 1991·Granted May 24, 1994·272 cites·48 claims
- 0591US7132833B2System for detecting defective battery packsPOWERWARE CORP·Filed 2001·Granted Nov 7, 2006·45 cites·27 claims
- 0691US6266260B1Inverter having center switch and uninterruptible power supply implementing samePOWERWARE CORP·Filed 2000·Granted Jul 24, 2001·81 cites·35 claims
- 0788US6218744B1Uninterruptible power supply and ferroresonant transformer for use therewithPOWERWARE CORP·Filed 2000·Granted Apr 17, 2001·96 cites·57 claims
- 0887US5729120ADynamic voltage regulation stabilization for AC power supply systemsGEN SIGNAL CORP·Filed 1996·Granted Mar 17, 1998·55 cites·32 claims
- 0982US6605879B2Battery charger control circuit and an uninterruptible power supply utilizing samePOWERWARE CORP·Filed 2001·Granted Aug 12, 2003·63 cites·23 claims
- 1054US7068861B2Device and method for inspecting markingsRENAISSANCE LEARNING INC·Filed 2001·Granted Jun 27, 2006·5 cites·14 claims
- 1152US11381076B2AC controlled relay drive circuitTHE VOLLRATH CO LLC·Filed 2019·Granted Jul 5, 2022·0 cites·18 claims
- 1243US2009232419A1System for detecting markingsRENAISSANCE LEARNING INC·Filed 2009·Application pending·0 cites
- 1339US2004168818A1System for detecting defective battery packsPOWERWARE CORP·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →