Inventor · disambiguated record
Donald N. Campbell
Also filed as: CAMPBELL DONALD N · CAMPBELL DONALD NICHOLAS
15 granted patents·587 citations·filing 1981–2020
95Inventor score
Top patents by PatentIndex Score
15 records- 0190US4525704AEnzymatic toxic gas sensorALLIED CORP·Filed 1983·Granted Jun 25, 1985·43 cites·19 claims
- 0290US4378499AChemical conversion for ion mobility detectors using surface interactionsBENDIX CORP·Filed 1981·Granted Mar 29, 1983·83 cites·8 claims
- 0388US5053343ASelective ionization of gas constituents using electrolytic reactionsENVIRONMENTAL TECH GROUP·Filed 1989·Granted Oct 1, 1991·72 cites·19 claims
- 0487US11259576B1Illuminated high-visibility safety vestCAMPBELL DONALD NICHOLAS·Filed 2020·Granted Mar 1, 2022·3 cites·20 claims
- 0586US4839143ASelective ionization of gas constituents using electrolytic reactionsALLIED SIGNAL INC·Filed 1985·Granted Jun 13, 1989·63 cites·4 claims
- 0685US5021654AAll ceramic ion mobility spectrometer cellENVIRONMENTAL TECH GROUP·Filed 1989·Granted Jun 4, 1991·63 cites·30 claims
- 0781US4712008AIon mobility spectrometerALLIED CORP·Filed 1986·Granted Dec 8, 1987·54 cites·8 claims
- 0877US4525266AElectrochemical gas sensorALLIED CORP·Filed 1983·Granted Jun 25, 1985·33 cites·15 claims
- 0975US5013188AProcess for replacing a length of buried pipeCAMPBELL DAVID B·Filed 1990·Granted May 7, 1991·71 cites·13 claims
- 1071US4500391AMethod of and system for real time differential pulse detectionALLIED CORP·Filed 1983·Granted Feb 19, 1985·29 cites·24 claims
- 1169US4928033AThermionic ionization sourceENVIRONMENTAL TECH GROUP·Filed 1988·Granted May 22, 1990·15 cites·8 claims
- 1264US4744954AAmperometric gas sensor containing a solid electrolyteALLIED SIGNAL INC·Filed 1986·Granted May 17, 1988·23 cites·8 claims
- 1351US5614417ASulfur chemiluminescence detection methodFiled 1995·Granted Mar 25, 1997·16 cites·1 claims
- 1449US4595486AElectrochemical gas sensorALLIED CORP·Filed 1985·Granted Jun 17, 1986·14 cites·21 claims
- 1534US4597299AIon gate sample gas inlet control for gas chromatograph analyzerALLIED CORP·Filed 1985·Granted Jul 1, 1986·5 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →