Inventor · disambiguated record
David Johnsen
Also filed as: JOHNSEN DAVID S · JOHNSEN DAVID SEAN
8 granted patents·1 pending application·167 citations·filing 1996–2006
88Inventor score
Top patents by PatentIndex Score
9 records- 0191US6863717B2Plate handling system and a method of removing plates from rail tiesNORDCO INC·Filed 2002·Granted Mar 8, 2005·22 cites·22 claims
- 0282US5671679AFully automatic, multiple operation rail maintenance apparatusNORDCO INC·Filed 1996·Granted Sep 30, 1997·63 cites·36 claims
- 0381US7070004B2Robotic sod stackerSTEINER TURF EQUIPMENT INC·Filed 2003·Granted Jul 4, 2006·23 cites·10 claims
- 0473US6622633B1Railroad machine centering systemNORDCO INC·Filed 2002·Granted Sep 23, 2003·9 cites·18 claims
- 0567US7066277B2Robotic sod stackerSTEINER TURF EQUIPMENT INC·Filed 2003·Granted Jun 27, 2006·18 cites·15 claims
- 0666US6755135B2Combined tie extractor and plate remover for rail maintenanceNORDCO INC·Filed 2002·Granted Jun 29, 2004·7 cites·20 claims
- 0765US6832558B2Riding rail tie plugging apparatusNORDCO INC·Filed 2002·Granted Dec 21, 2004·7 cites·20 claims
- 0851US2007034393A1Robotic sod stackerHENDRIKS EMANUEL A·Filed 2006·Application pending·0 cites
- 0949US6095053ABulk spike loading systemNORDCO INC·Filed 1998·Granted Aug 1, 2000·18 cites·25 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →