Inventor · disambiguated record
Darrell E. Johnson
Also filed as: JOHNSON DARRELL E · JOHNSON DARRELL L
3 granted patents·1 pending application·88 citations·filing 1986–2006
73Inventor score
Top patents by PatentIndex Score
4 records- 0166US6828910B2Apparatus for monitoring gas concentrationsGE MED SYS INFORMATION TECH·Filed 2003·Granted Dec 7, 2004·62 cites·27 claims
- 0247US2006194059A1Annular furnace spacers and method of using sameHONEYWELL INT INC·Filed 2006·Application pending·0 cites
- 0342US4779384ARail grinderHARSCO CORP·Filed 1986·Granted Oct 25, 1988·16 cites·43 claims
- 0432US5341029AMethod for supervising a switchSICK OPTIK ELEKTRONIK ERWIN·Filed 1990·Granted Aug 23, 1994·10 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →