Dyckerhoff & Widmann Aktiengesellschaft
Records under this name other than patents Dyckerhoff & Widmann Aktiengesellschaft holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
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| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,055,691 | Method of mounting and tensioning a freely tensioned tension member and device for carrying out the method Formerly held Term ended Term ended Jul 30, 2018 · From the USPTO record | Term ended | Term ended Jul 30, 2018 | From the USPTO record |
| US 6,360,501 | Guide unit for a tension member at a structural component Formerly held Lapsed on the fee record Ended Mar 26, 2014 · From the USPTO record | Lapsed on the fee record | Ended Mar 26, 2014 | From the USPTO record |
| US 6,322,281 | Corrosion-protected tension member of steel Formerly held Lapsed on the fee record Ended Nov 27, 2013 · From the USPTO record | Lapsed on the fee record | Ended Nov 27, 2013 | From the USPTO record |
| US 3,964,154 | Device for simultaneously stressing a number of tension elements Term ended Term ended no later than Jun 22, 1996 · Low confidence | Term ended | Term ended no later than Jun 22, 1996 | Low confidence |
| US 3,975,476 | Method for building a cable-stayed girder bridge Term ended Term ended no later than Aug 17, 1996 · Low confidence | Term ended | Term ended no later than Aug 17, 1996 | Low confidence |
| US 3,977,350 | Tank ship, especially liquified gas tank ship Term ended Term ended no later than Aug 31, 1996 · Low confidence | Term ended | Term ended no later than Aug 31, 1996 | Low confidence |
| US 3,978,674 | Device for the discharge of compression material in the production of the compression member of a pull and pressure anchor Term ended Term ended no later than Sep 7, 1996 · Low confidence | Term ended | Term ended no later than Sep 7, 1996 | Low confidence |
| US 3,985,480 | Apparatus for the sectional cantilever construction of bridge girder systems Term ended Term ended no later than Oct 12, 1996 · Low confidence | Term ended | Term ended no later than Oct 12, 1996 | Low confidence |
| US 3,994,138 | Device for the discharge of compression material in the production of the compression member of a pull and pressure anchor Term ended Term ended no later than Nov 30, 1996 · Low confidence | Term ended | Term ended no later than Nov 30, 1996 | Low confidence |
| US 4,023,514 | Liquid storage float formed of steel concrete or prestressed concrete Term ended Term ended no later than May 17, 1997 · Low confidence | Term ended | Term ended no later than May 17, 1997 | Low confidence |