Inventor · disambiguated record
Herbert Wallace Campbell
Also filed as: CAMPBELL HERBERT W · CAMPBELL HERBERT WALLACE
7 granted patents·335 citations·filing 1984–2012
88Inventor score
Top patents by PatentIndex Score
7 records- 0196US4618735AProcess and apparatus for the conversion of sludgesCANADIAN PATENTS DEV·Filed 1984·Granted Oct 21, 1986·124 cites·14 claims
- 0289US7160472B2Treatment of a waste stream through production and utilization of oxyhydrogen gasXOGEN TECHNOLOGIES INC·Filed 2003·Granted Jan 9, 2007·58 cites·26 claims
- 0387US4781796AApparatus for the conversion of sludgesCANADIAN PATENTS DEV·Filed 1987·Granted Nov 1, 1988·57 cites·5 claims
- 0485US4544489AProcess and apparatus for controlled addition of conditioning material to sewage sludgeCANADIAN PATENTS DEV·Filed 1984·Granted Oct 1, 1985·55 cites·20 claims
- 0583US9296629B2Treatment of a waste stream through production and utilization of oxyhydrogen gasXOGEN TECHNOLOGIES INC·Filed 2012·Granted Mar 29, 2016·7 cites·5 claims
- 0673US7837882B2Treatment of a waste stream through production and utilization of oxyhydrogen gasXOGEN TECHNOLOGIES INC·Filed 2006·Granted Nov 23, 2010·6 cites·13 claims
- 0761US5003814ASampling processes for use in the controlled addition of conditioning material to suspensions, sludges and the like and apparatus thereofLENON ENVIONMENTAL INC·Filed 1989·Granted Apr 2, 1991·28 cites·26 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →