Inventor · disambiguated record
John Campbell
Also filed as: CAMPBELL JOHN · CAMPBELL JOHN A · CAMPBELL JOHN A L · CAMPBELL JOHN ANDERSON
21 granted patents·4 pending applications·613 citations·filing 1974–2009
96Inventor score
Top patents by PatentIndex Score
25 records- 0190US3953194AProcess for reclaiming cemented metal carbideALLEGHENY LUDLUM IND INC·Filed 1975·Granted Apr 27, 1976·50 cites·19 claims
- 0289USD340638SFurniture leg shoeCAMPBELL JOHN A·Filed 1992·Granted Oct 26, 1993·40 cites·1 claims
- 0389US4113289AExhaust system and muffler lap jointDONALDSON CO INC·Filed 1977·Granted Sep 12, 1978·55 cites·13 claims
- 0487US7958095B1Methods and apparatus for collecting and processing file system dataEMC CORP·Filed 2009·Granted Jun 7, 2011·14 cites·20 claims
- 0587US7539706B1Methods and apparatus for collecting and processing file system dataEMC CORP·Filed 2004·Granted May 26, 2009·47 cites·24 claims
- 0686US4380353ADust control system and method of operationPEABODY COAL CO·Filed 1981·Granted Apr 19, 1983·79 cites·23 claims
- 0785US4629392ASystem for batch loading coal into railroad carsKERR MCGEE COAL CORP·Filed 1984·Granted Dec 16, 1986·46 cites·17 claims
- 0885US4200335AGauging apparatus and method, particularly for controlling mining by a mining machinePEABODY COAL CO·Filed 1978·Granted Apr 29, 1980·29 cites·42 claims
- 0984US7478404B1System and methods for event impact analysisEMC CORP·Filed 2004·Granted Jan 13, 2009·29 cites·20 claims
- 1084US3997017AAuxiliary hydrostatic front wheel drive systemCATERPILLAR TRACTOR CO·Filed 1974·Granted Dec 14, 1976·30 cites·8 claims
- 1183US4102550AMining method and apparatusPEABODY COAL CO·Filed 1976·Granted Jul 25, 1978·26 cites·5 claims
- 1277US7296832B1Locking mechanism for door hingeCAMPBELL JOHN·Filed 2005·Granted Nov 20, 2007·12 cites·11 claims
- 1376US4173373AAdvance method and apparatus for miningPEABODY COAL CO·Filed 1977·Granted Nov 6, 1979·19 cites·5 claims
- 1475US4969537AMuffler assembly and method of manufactureDONALDSON CO INC·Filed 1988·Granted Nov 13, 1990·42 cites·6 claims
- 1565US4904154ALoading system for railroad carsKERR MCGEE COAL CORP·Filed 1988·Granted Feb 27, 1990·25 cites·16 claims
- 1658US6427321B2Automatic decking and automatic fastening systemGEN MOTORS CORP·Filed 1999·Granted Aug 6, 2002·23 cites·18 claims
- 1755US4974284APicnic table caster assemblyFAULTLESS DOERNER MFG·Filed 1990·Granted Dec 4, 1990·20 cites·2 claims
- 1853US4082360AMining apparatus and methodPEABODY COAL CO·Filed 1976·Granted Apr 4, 1978·8 cites·16 claims
- 1944US2007090071A1Dual bucket holderCAMPBELL JOHN G·Filed 2005·Application pending·0 cites
- 2043US2004193431A1Remote gaming systemFiled 2001·Application pending·0 cites
- 2141US2008202034A1Door jamb locking plate assemblyCAMPBELL JOHN·Filed 2007·Application pending·0 cites
- 2240US2006020816A1Method and system for managing authentication attemptsCAMPBELL JOHN R·Filed 2005·Application pending·0 cites
- 2335US5452839AStud gun positioning apparatusSOLAR TURBINES INC·Filed 1994·Granted Sep 26, 1995·9 cites·14 claims
- 2432US6086311AHandtruck with deflectable mandrel for locking inside the core of a reel or spool to be lifted and movedFiled 1997·Granted Jul 11, 2000·8 cites·18 claims
- 2524US4746498AProcess for reducing gaseous sulfur dioxide content of flue gases by preheating coals prior to burning such coals and by controlling combustion temperature levelsKERR MCGEE COAL CORP·Filed 1984·Granted May 24, 1988·2 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →