Inventor · disambiguated record
Richard J. Zelm
Also filed as: ZELM RICHARD J
7 granted patents·197 citations·filing 1990–2018
87Inventor score
Top patents by PatentIndex Score
7 records- 0194US9664716B1Automatic insulation resistance testersMEG-ALERT INC·Filed 2014·Granted May 30, 2017·23 cites·39 claims
- 0289US9977067B1Automatic insulation resistance testersMEG ALERT INC·Filed 2017·Granted May 22, 2018·4 cites·20 claims
- 0387US5514967AAutomatic insulation test equipment for testing high voltage electrical equipment at the rated voltage levelFiled 1994·Granted May 7, 1996·82 cites·8 claims
- 0484US10782357B1Automatic insulation resistance testers with heaterMEG ALERT INC·Filed 2018·Granted Sep 22, 2020·2 cites·20 claims
- 0568US5155441AAutomatic insulation tester for grounded and ungrounded electrical equipmentZELM RICHARD J·Filed 1990·Granted Oct 13, 1992·32 cites·21 claims
- 0660US5524448AMinimum off-time device for protecting refrigeration compressors after a power interruptionFiled 1995·Granted Jun 11, 1996·33 cites·19 claims
- 0757US5172289AAutomatic insulation tester for grounded and ungrounded electrical equipmentZELM RICHARD J·Filed 1992·Granted Dec 15, 1992·21 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →