Doris Engineering
Records under this name other than the patents Doris Engineering holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned. None of them is counted in the 1 patents it holds.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,864,419 | Foundation support system for an offshore wind energy convertor, corresponding to an offshore wind power generating facility Formerly held In force · From the USPTO record | In force | From the USPTO record | |
| US 6,321,844 | Hybrid riser and method for sub-sea transportation of petroleum products with the device Term ended Term ended May 25, 2020 · From the USPTO record | Term ended | Term ended May 25, 2020 | From the USPTO record |
| US 6,478,511 | Floating system with tensioned lines Term ended Term ended May 4, 2020 · From the USPTO record | Term ended | Term ended May 4, 2020 | From the USPTO record |
| US 6,213,157 | Submarine pipeline for transporting petroleum products Term ended Term ended Apr 10, 2020 · From the USPTO record | Term ended | Term ended Apr 10, 2020 | From the USPTO record |
| US 6,082,391 | Device for hybrid riser for the sub-sea transportation of petroleum products Formerly held Term ended Term ended Sep 4, 2018 · From the USPTO record | Term ended | Term ended Sep 4, 2018 | From the USPTO record |
| US 8,727,663 | Capture and storage installation for hydrocarbons escaping an underwater well Lapsed on the fee record Ended May 20, 2018 · From the USPTO record | Lapsed on the fee record | Ended May 20, 2018 | From the USPTO record |
| US 6,139,224 | Semi-submersible platform for offshore oil field operation and method of installing a platform of this kind Lapsed on the fee record Ended Oct 31, 2012 · From the USPTO record | Lapsed on the fee record | Ended Oct 31, 2012 | From the USPTO record |
| US 4,556,004 | Floating device for hoisting and transporting loads Term ended Term ended no later than Dec 3, 2005 · Low confidence | Term ended | Term ended no later than Dec 3, 2005 | Low confidence |
| US 4,684,292 | Oscillating platform on flexible piles for work at sea Term ended Term ended no later than Aug 4, 2007 · Low confidence | Term ended | Term ended no later than Aug 4, 2007 | Low confidence |
| US 4,797,034 | Oscillating marine platform with a rigid base Term ended Term ended no later than Jan 10, 2009 · Low confidence | Term ended | Term ended no later than Jan 10, 2009 | Low confidence |