DORIS ENGINEERING
🏢 View company profile →15Patents
2Active
15Granted
34Portfolio score
Filing activity: Aug 12, 1985 → Dec 23, 2019
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6082391A | Device for hybrid riser for the sub-sea transportation of petroleum products | Emerging Cross-Sectional Technologies | 41 | Expired |
| US6321844A | Hybrid riser and method for sub-sea transportation of petroleum products with the device | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4895481A | Non-rigid marine platform with surface wellheads | Performing Operations; Transporting | 25 | Expired |
| US6213157A | Submarine pipeline for transporting petroleum products | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US6139224A | Semi-submersible platform for offshore oil field operation and method of installing a platform of this kind | Performing Operations; Transporting | 15 | Expired |
| US4963058A | Protective barrier for the protection of offshore marine works, and method of installation of the same | Fixed Constructions | 15 | Expired |
| US4684292A | Oscillating platform on flexible piles for work at sea | Fixed Constructions | 9 | Expired |
| US4797034A | Oscillating marine platform with a rigid base | Fixed Constructions | 8 | Expired |
| US5186581A | Gravity base structure of an offshore platform resisting to icebergs | Fixed Constructions | 7 | Expired |
| US6478511B1 | Floating system with tensioned lines | Performing Operations; Transporting | 6 | Expired |
| US5044830A | Gravity base structure for an offshore platform in arctic regions | Fixed Constructions | 5 | Expired |
| US4906138A | Gravity base structure for an offshore platform in arctic regions | Fixed Constructions | 4 | Expired |
| US11053924B2 | Offshore wind turbine floating support and associated installation means | Emerging Cross-Sectional Technologies | 1 | Active |
| US4968180A | Oscillating marine platform connected via a shear device to a rigid base | Fixed Constructions | 1 | Expired |
| US8727663B2 | Capture and storage installation for hydrocarbons escaping an underwater well | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.