Daewoo E&C Co., Ltd.
Records under this name other than patents Daewoo E&C Co., Ltd. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 6 of 6 · Back to Daewoo E&C Co., Ltd.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,518,261 | Water purification apparatus and method for using pressure filter and pore control fiber filter Lapsed on the fee record Ended Aug 27, 2025 · From the USPTO record | Lapsed on the fee record | Ended Aug 27, 2025 | From the USPTO record |
| US 8,557,114 | Water purification apparatus and method for using pressure filter and pore control fiber filter Lapsed on the fee record Ended Oct 15, 2017 · From the USPTO record | Lapsed on the fee record | Ended Oct 15, 2017 | From the USPTO record |
| US 8,341,788 | Method for constructing precast coping for bridge Lapsed on the fee record Ended Jan 1, 2017 · From the USPTO record | Lapsed on the fee record | Ended Jan 1, 2017 | From the USPTO record |
| US 7,373,683 | Construction method for prestressed concrete girder bridges Lapsed on the fee record Ended May 20, 2016 · From the USPTO record | Lapsed on the fee record | Ended May 20, 2016 | From the USPTO record |
| US 5,643,488 | Multi-room modular construction system Term ended Term ended no later than Jul 1, 2017 · Low confidence | Term ended | Term ended no later than Jul 1, 2017 | Low confidence |
| US 5,728,334 | DWS system method for manufacturing pre-cast concrete modules Term ended Term ended no later than Mar 17, 2018 · Low confidence | Term ended | Term ended no later than Mar 17, 2018 | Low confidence |