Inventor · disambiguated record
Randy Longsdorf
Also filed as: LONGSDORF RANDY · LONGSDORF RANDY J
15 granted patents·529 citations·filing 1987–2006
95Inventor score
Top patents by PatentIndex Score
15 records- 0193US7321846B1Two-wire process control loop diagnosticsROSEMOUNT INC·Filed 2006·Granted Jan 22, 2008·39 cites·25 claims
- 0293US7018800B2Process device with quiescent current diagnosticsROSEMOUNT INC·Filed 2003·Granted Mar 28, 2006·52 cites·42 claims
- 0389US7280048B2Process control loop current verificationROSEMOUNT INC·Filed 2005·Granted Oct 9, 2007·26 cites·23 claims
- 0489US5710552ABarrier deviceROSEMOUNT INC·Filed 1995·Granted Jan 20, 1998·79 cites·20 claims
- 0587US6006338AProcess transmitter communication circuitROSEMOUNT INC·Filed 1997·Granted Dec 21, 1999·64 cites·20 claims
- 0686US7098798B2Process device with loop overrideROSEMOUNT INC·Filed 2003·Granted Aug 29, 2006·21 cites·50 claims
- 0785US7630861B2Dedicated process diagnostic deviceROSEMOUNT INC·Filed 2006·Granted Dec 8, 2009·18 cites·32 claims
- 0884US5847567AMicrowave level gauge with remote transducerROSEMOUNT INC·Filed 1994·Granted Dec 8, 1998·54 cites·22 claims
- 0981US4804958ATwo-wire transmitter with threshold detection circuitROSEMOUNT INC·Filed 1987·Granted Feb 14, 1989·42 cites·7 claims
- 1077US7464721B2Process equipment validationROSEMOUNT INC·Filed 2004·Granted Dec 16, 2008·25 cites·56 claims
- 1176US7627441B2Process device with vibration based diagnosticsROSEMOUNT INC·Filed 2003·Granted Dec 1, 2009·30 cites·50 claims
- 1274US5323289ALightning protection for field mounted instrumentsROSEMOUNT INC·Filed 1992·Granted Jun 21, 1994·36 cites·23 claims
- 1364US7991582B2Process device with diagnostic annunciationROSEMOUNT INC·Filed 2004·Granted Aug 2, 2011·10 cites·31 claims
- 1463US8180466B2Process device with supervisory overlayerLONGSDORF RANDY·Filed 2003·Granted May 15, 2012·13 cites·29 claims
- 1557US5410730AInterface controller for matching a process address field from a plurality of fields and generating a corresponding device address fieldROSEMOUNT INC·Filed 1993·Granted Apr 25, 1995·20 cites·19 claims
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