NWL Transformers
Records under this name other than patents NWL Transformers holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 8 of 8 · Back to NWL Transformers
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,326,860 | Ripple insensitive electric precipitator Term ended Term ended no later than Apr 27, 2002 · Low confidence | Term ended | Term ended no later than Apr 27, 2002 | Low confidence |
| US 4,390,830 | Back corona detection and current setback for electrostatic precipitators Term ended Term ended no later than Jun 28, 2003 · Low confidence | Term ended | Term ended no later than Jun 28, 2003 | Low confidence |
| US 4,429,347 | Easily removable support assembly for a high voltage DC power supply Term ended Term ended no later than Jan 31, 2004 · Low confidence | Term ended | Term ended no later than Jan 31, 2004 | Low confidence |
| US 4,527,221 | Support assembly for a high voltage DC power supply Term ended Term ended no later than Jul 2, 2005 · Low confidence | Term ended | Term ended no later than Jul 2, 2005 | Low confidence |
| US 4,536,659 | Visible disconnect/ground switch Term ended Term ended no later than Aug 20, 2005 · Low confidence | Term ended | Term ended no later than Aug 20, 2005 | Low confidence |
| US 4,772,998 | Electrostatic precipitator voltage controller having improved electrical characteristics Term ended Term ended no later than Sep 20, 2008 · Low confidence | Term ended | Term ended no later than Sep 20, 2008 | Low confidence |
| US 4,928,456 | Process for rapping of electrostatic precipitator surfaces Term ended Term ended no later than May 29, 2010 · Low confidence | Term ended | Term ended no later than May 29, 2010 | Low confidence |
| US 5,015,267 | Process for rapping of electrostatic precipitator surfaces Term ended Term ended no later than May 14, 2011 · Low confidence | Term ended | Term ended no later than May 14, 2011 | Low confidence |