Ocean Riser Systems AS
11Patents
8Active
11Granted
44Portfolio score
Filing activity: Sep 10, 2002 → Nov 29, 2011 · 5 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7497266B2 | Arrangement and method for controlling and regulating bottom hole pressure when drilling deepwater offshore wells | Fixed Constructions | 55 | Active |
| US7264058B2 | Arrangement and method for regulating bottom hole pressures when drilling deepwater offshore wells | Fixed Constructions | 53 | Expired |
| US7367410B2 | Method and device for liner system | Fixed Constructions | 48 | Expired |
| US7513310B2 | Method and arrangement for performing drilling operations | Fixed Constructions | 33 | Expired |
| US8640778B2 | Systems and methods for subsea drilling | Fixed Constructions | 12 | Active |
| US8978774B2 | System and method for drilling a subsea well | Fixed Constructions | 10 | Active |
| US8573307B2 | High pressure sleeve for dual bore HP riser | Fixed Constructions | 6 | Active |
| US7950463B2 | Method and arrangement for removing soils, particles or fluids from the seabed or from great sea depths | Fixed Constructions | 5 | Active |
| US8322439B2 | Arrangement and method for regulating bottom hole pressures when drilling deepwater offshore wells | Fixed Constructions | 4 | Active |
| US9062498B2 | Riserless, pollutionless drilling system | Fixed Constructions | 3 | Active |
| US8678352B2 | Wireline intervention system | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.