Bowen Tools, Inc.
27Patents
0Active
27Granted
33Portfolio score
Filing activity: Apr 18, 1975 → Mar 6, 1995
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5388651A | Top drive unit torque break-out system | Fixed Constructions | 120 | Expired |
| US5501286A | Method and apparatus for displacing a top drive torque track | Fixed Constructions | 98 | Expired |
| US4715456A | Slips for well pipe | Fixed Constructions | 83 | Expired |
| US4558842A | Connector for joining blowout preventer members | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5381867A | Top drive torque track and method of installing same | Fixed Constructions | 30 | Expired |
| US3955634A | Hydraulic well jar | Fixed Constructions | 30 | Expired |
| US4877217A | Fail-safe blowout preventer | Fixed Constructions | 29 | Expired |
| US4135068A | Dead man safety assembly | Electricity | 25 | Expired |
| US4332062A | Bowl structure | Fixed Constructions | 23 | Expired |
| US3987858A | Hydromechanical drilling jar | Fixed Constructions | 23 | Expired |
| US4398729A | Blowout preventer inner ram seal assembly | Fixed Constructions | 22 | Expired |
| US4076436A | Stress relieved tool elements | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4027816A | Seal assembly | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4456215A | Inner seal and support rod assembly for high pressure blowout preventers | Fixed Constructions | 21 | Expired |
| US4439167A | Shock absorber assembly | Fixed Constructions | 19 | Expired |
| US5584353A | Well jar accelerator with expansion chamber | Fixed Constructions | 17 | Expired |
| US4369977A | Seal for an overshot and a method of doing same | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US5289845A | Oilfield tubing reel and reel assembly | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4648447A | Casing scraper | Fixed Constructions | 14 | Expired |
| US4331006A | Shock absorber assembly | Fixed Constructions | 12 | Expired |
| US4706745A | Lock-down releasing spear assembly | Fixed Constructions | 10 | Expired |
| US4387885A | Shock absorber assembly for absorbing shocks encountered by a drill string | Fixed Constructions | 6 | Expired |
| US4080761A | Control valve assembly | Performing Operations; Transporting | 5 | Expired |
| US4842058A | Load detection and indicator apparatus for well tubing or the like | Fixed Constructions | 2 | Expired |
| US4793410A | Load detection and indicator apparatus for well tubing or the like | Fixed Constructions | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.