EFB, Inc.
Records under this name other than patents EFB, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 9 of 9 · Back to EFB, Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,040,008 | Method for removal of particles and VOC from an airstream Formerly held In force · From the USPTO record | In force | From the USPTO record | |
| US 8,889,079 | Apparatus for Removal of Particles and VOC from an Airstream Formerly held In force · High confidence | In force | High confidence | |
| US 7,318,288 | Apparatus and method using an electrified filter bed for removal of pollutants from a flue gas stream Lapsed on the fee record Ended Jan 15, 2012 · From the USPTO record | Lapsed on the fee record | Ended Jan 15, 2012 | From the USPTO record |
| US 4,144,359 | Apparatus and method for controlling pollutant emissions and for enhancing the manufacture of asphaltic roofing Term ended Term ended no later than Mar 13, 1999 · Low confidence | Term ended | Term ended no later than Mar 13, 1999 | Low confidence |
| US 4,308,036 | Filter apparatus and method for collecting fly ash and fine dust Term ended Term ended no later than Dec 29, 2001 · Low confidence | Term ended | Term ended no later than Dec 29, 2001 | Low confidence |
| US 4,374,652 | Filter apparatus and method for collecting fly ash and fine dust Term ended Term ended no later than Feb 22, 2003 · Low confidence | Term ended | Term ended no later than Feb 22, 2003 | Low confidence |
| US 4,505,723 | Filter apparatus Term ended Term ended no later than Mar 19, 2005 · Low confidence | Term ended | Term ended no later than Mar 19, 2005 | Low confidence |
| US 4,542,000 | Method for treating gas streams Term ended Term ended no later than Sep 17, 2005 · Low confidence | Term ended | Term ended no later than Sep 17, 2005 | Low confidence |
| US 4,668,489 | Method for treating gas streams Term ended Term ended no later than May 26, 2007 · Low confidence | Term ended | Term ended no later than May 26, 2007 | Low confidence |