Environmental Elements Corporation
Records under this name other than patents Environmental Elements Corporation holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Back to Environmental Elements Corporation
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,245,126 | Method for enhancing collection efficiency and providing surface sterilization of an air filter Formerly held Lapsed on the fee record Ended Jun 12, 2013 · From the USPTO record | Lapsed on the fee record | Ended Jun 12, 2013 | From the USPTO record |
| US 6,245,132 | Air filter with combined enhanced collection efficiency and surface sterilization Formerly held Lapsed on the fee record Ended Jun 12, 2013 · From the USPTO record | Lapsed on the fee record | Ended Jun 12, 2013 | From the USPTO record |
| US 3,972,701 | Electrostatic precipitator having electrode stabilizer means Term ended Term ended no later than Aug 3, 1996 · Low confidence | Term ended | Term ended no later than Aug 3, 1996 | Low confidence |
| US 4,026,683 | Inlet duct and hopper apparatus for electrostatic precipitators Term ended Term ended no later than May 31, 1997 · Low confidence | Term ended | Term ended no later than May 31, 1997 | Low confidence |
| US 4,042,354 | Electrostatic precipitator having an improved discharge and collector electrode system and gas distribution means Term ended Term ended no later than Aug 16, 1997 · Low confidence | Term ended | Term ended no later than Aug 16, 1997 | Low confidence |
| US 4,048,076 | Center column drive arrangement for circular clarifiers Term ended Term ended no later than Sep 13, 1997 · Low confidence | Term ended | Term ended no later than Sep 13, 1997 | Low confidence |
| US 4,166,036 | Floating skimming apparatus Term ended Term ended no later than Aug 28, 1999 · Low confidence | Term ended | Term ended no later than Aug 28, 1999 | Low confidence |
| US 4,196,849 | Variable volume control assembly Term ended Term ended no later than Apr 8, 2000 · Low confidence | Term ended | Term ended no later than Apr 8, 2000 | Low confidence |
| US 4,251,027 | Variable volume control assembly Formerly held Term ended Term ended no later than Feb 17, 2001 · Low confidence | Term ended | Term ended no later than Feb 17, 2001 | Low confidence |
| US 4,343,194 | Flow sensing apparatus Formerly held Term ended Term ended no later than Aug 10, 2002 · Low confidence | Term ended | Term ended no later than Aug 10, 2002 | Low confidence |