Filtertech Inc.
Records under this name other than patents Filtertech Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 10 of 10 · Back to Filtertech Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,572,373 | Oil filtration vessel Term ended Term ended Dec 26, 2024 · From the USPTO record | Term ended | Term ended Dec 26, 2024 | From the USPTO record |
| US 6,089,379 | Liquid filtration media support belt Term ended Term ended Mar 30, 2018 · From the USPTO record | Term ended | Term ended Mar 30, 2018 | From the USPTO record |
| US 3,959,139 | Liquid purification system Term ended Term ended no later than May 25, 1996 · Low confidence | Term ended | Term ended no later than May 25, 1996 | Low confidence |
| US 4,137,169 | Liquid filtration system Term ended Term ended no later than Jan 30, 1999 · Low confidence | Term ended | Term ended no later than Jan 30, 1999 | Low confidence |
| US 4,448,683 | Liquid filtration system with level-responsive contaminant removal and air flow control for vacuum producer Term ended Term ended no later than May 15, 2004 · Low confidence | Term ended | Term ended no later than May 15, 2004 | Low confidence |
| US 4,880,538 | Edge seal for liquid filtration apparatus Term ended Term ended no later than Nov 14, 2009 · Low confidence | Term ended | Term ended no later than Nov 14, 2009 | Low confidence |
| US 4,963,259 | Sludge dewatering filter press Term ended Term ended no later than Oct 16, 2010 · Low confidence | Term ended | Term ended no later than Oct 16, 2010 | Low confidence |
| US 5,222,680 | Apparatus for rewinding liquid filtration media Term ended Term ended no later than Jun 29, 2013 · Low confidence | Term ended | Term ended no later than Jun 29, 2013 | Low confidence |
| US 5,238,565 | Liquid filtration apparatus with adjustable media guide and improved segregation of clean and contaminated liquid Term ended Term ended no later than Aug 24, 2013 · Low confidence | Term ended | Term ended no later than Aug 24, 2013 | Low confidence |
| US 5,312,524 | Distillation system for recovery of industrial process liquids Term ended Term ended no later than May 17, 2014 · Low confidence | Term ended | Term ended no later than May 17, 2014 | Low confidence |