Inventor · disambiguated record
David K. Johansen
Also filed as: JOHANSEN DAVID · JOHANSEN DAVID K
8 granted patents·3 pending applications·147 citations·filing 1978–2010
88Inventor score
Top patents by PatentIndex Score
11 records- 0192US7475801B2Systems for providing controlled power to ultrasonic welding probesDUKANE CORP·Filed 2006·Granted Jan 13, 2009·26 cites·15 claims
- 0276US4258306AState of battery charge indicator circuitGOULD INC·Filed 1978·Granted Mar 24, 1981·23 cites·23 claims
- 0372US5880580AAutomatic regulation of power delivered by ultrasonic transducerDUKANE CORP·Filed 1998·Granted Mar 9, 1999·34 cites·7 claims
- 0470US7225965B2Multiple probe power systems and methods for ultrasonic weldingDUKANE CORP·Filed 2003·Granted Jun 5, 2007·9 cites·22 claims
- 0564US4218644ATime controlled battery chargerGOULD INC·Filed 1978·Granted Aug 19, 1980·27 cites·12 claims
- 0663US4267500AControl cooling meansGOULD INC·Filed 1978·Granted May 12, 1981·13 cites·20 claims
- 0746US2006213952A1Multiple probe power systems and methods for ultrasonic weldingDUKANE CORP·Filed 2006·Application pending·0 cites
- 0845US2006011707A1Multiple probe power systems and methods for ultrasonic weldingDUKANE CORP·Filed 2005·Application pending·0 cites
- 0938US4439719AVariable timing circuit for motive power battery chargersGNB BATTERIES INC·Filed 1982·Granted Mar 27, 1984·13 cites·30 claims
- 1036US2010230901A1Magnetic fluid rotary feedthrough with sensing and communication capabilityFERROTEC UK LTD·Filed 2010·Application pending·0 cites
- 1123US4450401AControl circuit for automatic battery chargersGNB BATTERIES INC·Filed 1982·Granted May 22, 1984·2 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →