Krofta Technologies Corp.
Records under this name other than patents Krofta Technologies Corp. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
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| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,174,434 | Three zone dissolved air floatation clarifier with fixed lamellae and improved paddle-and-ramp sludge removal system Term ended Term ended Jan 25, 2019 · From the USPTO record | Term ended | Term ended Jan 25, 2019 | From the USPTO record |
| US 5,013,429 | Apparatus for stabilizing sludge Term ended Term ended no later than May 7, 2011 · Low confidence | Term ended | Term ended no later than May 7, 2011 | Low confidence |
| US 5,078,861 | Water clarifying apparatus Term ended Term ended no later than Jan 7, 2012 · Low confidence | Term ended | Term ended no later than Jan 7, 2012 | Low confidence |
| US 5,145,582 | Method for stabilizing sludge Term ended Term ended no later than Sep 8, 2012 · Low confidence | Term ended | Term ended no later than Sep 8, 2012 | Low confidence |
| US 5,160,611 | Apparatus for aerating water Term ended Term ended no later than Nov 3, 2012 · Low confidence | Term ended | Term ended no later than Nov 3, 2012 | Low confidence |
| US 5,188,729 | Sludge collection apparatus for a water clarifier Term ended Term ended no later than Feb 23, 2013 · Low confidence | Term ended | Term ended no later than Feb 23, 2013 | Low confidence |
| US 5,242,585 | Apparatus and method for deinking waste paper pulp Term ended Term ended no later than Sep 7, 2013 · Low confidence | Term ended | Term ended no later than Sep 7, 2013 | Low confidence |
| US 5,320,750 | Water clarifier with first filtrate isolation, improved backwashing and improved bubble generation Term ended Term ended no later than Jun 14, 2014 · Low confidence | Term ended | Term ended no later than Jun 14, 2014 | Low confidence |
| US 5,415,771 | High capacity single tank water clarification system Term ended Term ended no later than May 16, 2015 · Low confidence | Term ended | Term ended no later than May 16, 2015 | Low confidence |
| US 5,567,319 | High capacity single tank water clarification method Term ended Term ended no later than Oct 22, 2016 · Low confidence | Term ended | Term ended no later than Oct 22, 2016 | Low confidence |