Assignee
KROFCHAK DAVID
4 granted patents·1 pending application·89 citations·filing 1977–2006
Top patents by PatentIndex Score
5 records- 0186US4229295ASolidification of aqueous sludgeKROFCHAK DAVID·Filed 1979·Granted Oct 21, 1980·48 cites·9 claims
- 0265US4216012AProcess for the treatment of incinerated sewage sludge ashKROFCHAK DAVID·Filed 1979·Granted Aug 5, 1980·16 cites·16 claims
- 0361US4110212AMethod of treating a waste liquid containing polluting compoundsKROFCHAK DAVID·Filed 1977·Granted Aug 29, 1978·17 cites·8 claims
- 0459US4279635AProcess for treating phosphatic clay suspensionsKROFCHAK DAVID·Filed 1979·Granted Jul 21, 1981·8 cites·13 claims
- 0545US2007209476A1Treatment of base metal smelter slagKROFCHAK DAVID·Filed 2006·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →