Compagnie Maritime D'Expertises
🏢 View company profile →15Patents
0Active
15Granted
32Portfolio score
Filing activity: Aug 19, 1974 → Jun 30, 1988
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4142739A | Pipe connector apparatus having gripping and sealing means | Emerging Cross-Sectional Technologies | 99 | Expired |
| US4068490A | Method and apparatus for assembling and laying underwater pipeline | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US3943982A | Apparatus for internally checking well pipe bore and for automatically sealing leaks therein | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4253779A | Method for aligning two submerged pipe sections | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4245578A | Process and apparatus for handling a diving machine | Performing Operations; Transporting | 7 | Expired |
| US4067199A | Method and apparatus of launching floats to lighten underwater conduits | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4171175A | Apparatus for underwater welding of pipes | Performing Operations; Transporting | 7 | Expired |
| US4302652A | Method of welding the ends of submerged pipes by sleeve abutment | Performing Operations; Transporting | 7 | Expired |
| US4894512A | Method and device for underwater electrical welding | Performing Operations; Transporting | 5 | Expired |
| US4214692A | Butt-welding apparatus for assembling and laying pipe strings in deep water | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4133180A | Apparatus for welding submerged pipe ends | Performing Operations; Transporting | 4 | Expired |
| US4045035A | Inflatable lip seal for pipes | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4103500A | Apparatus for connecting the ends of submerged pipes | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4068491A | Method and apparatus for connecting the ends of submerged pipes | Performing Operations; Transporting | 2 | Expired |
| US4251167A | Method of welding together submerged pipe ends by means of a telescopic connection sleeve | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.