Assignee
ZIMPRO PASSAVANT INC
US·9 granted patents·371 citations·filing 1988–1989
Top patents by PatentIndex Score
9 records- 0196US4919815ATwo-stage anaerobic/aerobic treatment processZIMPRO PASSAVANT INC·Filed 1989·Granted Apr 24, 1990·143 cites·27 claims
- 0285US4810386ATwo-stage wastewater treatmentZIMPRO PASSAVANT INC·Filed 1988·Granted Mar 7, 1989·58 cites·22 claims
- 0382US4857198AProcess for treatment of water containing volatile and toxic compoundsZIMPRO PASSAVANT INC·Filed 1988·Granted Aug 15, 1989·52 cites·31 claims
- 0478US4897196ATwo-stage batch wastewater treatmentZIMPRO PASSAVANT INC·Filed 1988·Granted Jan 30, 1990·43 cites·15 claims
- 0569US4976873APulsing portions of a filter cell to extend a filter runZIMPRO PASSAVANT INC·Filed 1989·Granted Dec 11, 1990·29 cites·20 claims
- 0649US4818414ASlime control for primary filtration systemsZIMPRO PASSAVANT INC·Filed 1988·Granted Apr 4, 1989·13 cites·52 claims
- 0749US4812243AProcess for treating caustic cyanide metal wastesZIMPRO PASSAVANT INC·Filed 1988·Granted Mar 14, 1989·17 cites·13 claims
- 0843US4952316AContinuous aeration-batch clarification wastewater treatmentZIMPRO PASSAVANT INC·Filed 1989·Granted Aug 28, 1990·14 cites·18 claims
- 0925US4983308AAutomatic chemical cleaning of granular medium filtersZIMPRO PASSAVANT INC·Filed 1989·Granted Jan 8, 1991·2 cites·5 claims
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