Inventor · disambiguated record
Warren G. Hafner
Also filed as: HAFNER JR WARREN G · HAFNER WARREN G
9 granted patents·137 citations·filing 1985–2000
89Inventor score
Top patents by PatentIndex Score
9 records- 0181US4686388AIntegrated circuit substrate bias selection circuitPITNEY BOWES INC·Filed 1985·Granted Aug 11, 1987·33 cites·4 claims
- 0265US4827205AOn-chip voltage supply regulatorPITNEY BOWES INC·Filed 1987·Granted May 2, 1989·18 cites·5 claims
- 0363US4998203APostage meter with a non-volatile memory security circuitDIGIULIO PETER C·Filed 1989·Granted Mar 5, 1991·22 cites·2 claims
- 0459US6329856B1Method and apparatus for tracking and controlling voltage and current transitionsSUMMIT MICROELECTRONICS INC·Filed 2000·Granted Dec 11, 2001·9 cites·18 claims
- 0548US4706159AMultiple power supply overcurrent protection circuitPITNEY BOWES INC·Filed 1985·Granted Nov 10, 1987·8 cites·10 claims
- 0647US4701856AReset delay circuit for an electronic postage meterPITNEY BOWES INC·Filed 1985·Granted Oct 20, 1987·10 cites·5 claims
- 0747US4675550AMode detection circuit for a dual purpose analog inputPITNEY BOWES INC·Filed 1985·Granted Jun 23, 1987·8 cites·4 claims
- 0845US4746818ACircuit for maintaining the state of an output despite changes in the state of inputPITNEY BOWES INC·Filed 1985·Granted May 24, 1988·15 cites·9 claims
- 0944US4747057AElectronic postage meter having power up and power down protection circuitryPITNEY BOWES INC·Filed 1985·Granted May 24, 1988·14 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →