Copermill Limited
Records under this name other than patents Copermill Limited holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 5 of 5 · Back to Copermill Limited
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,901,789 | Heat regenerators Term ended Term ended no later than Feb 20, 2010 · Low confidence | Term ended | Term ended no later than Feb 20, 2010 | Low confidence |
| US 5,029,533 | Pressure relief mechanism Term ended Term ended no later than Jul 9, 2011 · Low confidence | Term ended | Term ended no later than Jul 9, 2011 | Low confidence |
| US 5,035,402 | Furnaces Term ended Term ended no later than Jul 30, 2011 · Low confidence | Term ended | Term ended no later than Jul 30, 2011 | Low confidence |
| US 5,049,067 | Scrap metal recycling furnace systems Term ended Term ended no later than Sep 17, 2011 · Low confidence | Term ended | Term ended no later than Sep 17, 2011 | Low confidence |
| US 5,114,309 | Hot gas blower with laminated fan blades and cooling system therefor Term ended Term ended no later than May 19, 2012 · Low confidence | Term ended | Term ended no later than May 19, 2012 | Low confidence |