Inventor · disambiguated record
Marshall L. Spector
Also filed as: SPECTOR MARSHALL · SPECTOR MARSHALL L
13 granted patents·774 citations·filing 1975–1999
94Inventor score
Top patents by PatentIndex Score
13 records- 0198US4271026AControl of activated sludge wastewater treating process for enhanced phosphorous removalAIR PROD & CHEM·Filed 1979·Granted Jun 2, 1981·145 cites·26 claims
- 0297US4162153AHigh nitrogen and phosphorous content biomass produced by treatment of a BOD-containing materialAIR PROD & CHEM·Filed 1977·Granted Jul 24, 1979·106 cites·17 claims
- 0396US4056465AProduction of non-bulking activated sludgeAIR PROD & CHEM·Filed 1976·Granted Nov 1, 1977·124 cites·19 claims
- 0496US3994802ARemoval of BOD and nitrogenous pollutants from wastewatersAIR PROD & CHEM·Filed 1975·Granted Nov 30, 1976·95 cites·29 claims
- 0588US5182021ABiological process for enhanced removal of ammonia, nitrite, nitrate, and phosphate from wastewaterUNIV LEHIGH·Filed 1991·Granted Jan 26, 1993·71 cites·17 claims
- 0685US4802905AMethod for protecting plants and plant matter from stressAIR PROD & CHEM·Filed 1987·Granted Feb 7, 1989·31 cites·9 claims
- 0785US4488968ARemoval of phosphates and BOD from wastewatersAIR PROD & CHEM·Filed 1983·Granted Dec 18, 1984·48 cites·4 claims
- 0884US4731185ABiological wastewater treating systemAIR PROD & CHEM·Filed 1983·Granted Mar 15, 1988·44 cites·9 claims
- 0974US6224779B1Inhibition of algae in swimming poolsFiled 1999·Granted May 1, 2001·39 cites·14 claims
- 1065US4650585AMethod for minimizing diurnal swing in phosphorus content of effluent streams from wastewater treating plantsAIR PROD & CHEM·Filed 1984·Granted Mar 17, 1987·21 cites·8 claims
- 1164US4552663AProcess for the removal of ammoniacal nitrogen in the BOD sorption zone of a wastewater treatment plantAIR PROD & CHEM·Filed 1984·Granted Nov 12, 1985·21 cites·6 claims
- 1254US5820760AProcess for reducing nitrous oxide emission from waste water treatmentCOMPETITIVE TECHNOLOGIES OF PA·Filed 1997·Granted Oct 13, 1998·19 cites·15 claims
- 1340US4556491AAvoidance of rising sludge in biological wastewater treatment clarifiersAIR PROD & CHEM·Filed 1984·Granted Dec 3, 1985·10 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →