Contech Technologies, Inc.
Records under this name other than patents Contech Technologies, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Back to Contech Technologies, Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,994,381 | Stab joint coupling Formerly held Term ended Term ended Jul 20, 2020 · From the USPTO record | Term ended | Term ended Jul 20, 2020 | From the USPTO record |
| US 8,434,971 | Retaining Wall Block with Face Connection Formerly held Lapsed on the fee record Ended May 7, 2017 · Medium confidence | Lapsed on the fee record | Ended May 7, 2017 | Medium confidence |
| US 6,524,722 | Corrugated Structural Metal Plate Formerly held Lapsed on the fee record Ended Feb 25, 2015 · High confidence | Lapsed on the fee record | Ended Feb 25, 2015 | High confidence |
| US 4,417,939 | System for producing a bitumen laminate Formerly held Term ended Term ended no later than Nov 29, 2003 · Low confidence | Term ended | Term ended no later than Nov 29, 2003 | Low confidence |
| US 4,702,502 | Gasket for making joints in corrugated plastic pipe Term ended Term ended no later than Oct 27, 2007 · Low confidence | Term ended | Term ended no later than Oct 27, 2007 | Low confidence |
| US 4,846,660 | Apparatus for producing double wall pipe Formerly held Term ended Term ended no later than Jul 11, 2009 · Low confidence | Term ended | Term ended no later than Jul 11, 2009 | Low confidence |
| US 4,914,939 | Self propelled internal pipe arching apparatus Formerly held Term ended Term ended no later than Apr 10, 2010 · Low confidence | Term ended | Term ended no later than Apr 10, 2010 | Low confidence |
| US 4,974,440 | Self propelled internal pipe arching apparatus Formerly held Term ended Term ended no later than Dec 4, 2010 · Low confidence | Term ended | Term ended no later than Dec 4, 2010 | Low confidence |
| US 5,124,109 | Method for producing a double wall pipe Term ended Term ended no later than Jun 23, 2012 · Low confidence | Term ended | Term ended no later than Jun 23, 2012 | Low confidence |
| US 5,380,121 | Slotted drain Formerly held Term ended Term ended no later than Jan 10, 2015 · Low confidence | Term ended | Term ended no later than Jan 10, 2015 | Low confidence |