Baker Oil Tools, Inc.
131Patents
0Active
131Granted
39Portfolio score
Filing activity: Feb 17, 1972 → Jul 18, 1988
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4413682A | Method and apparatus for installing a cementing float shoe on the bottom of a well casing | Fixed Constructions | 217 | Expired |
| US4605063A | Chemical injection tubing anchor-catcher | Fixed Constructions | 116 | Expired |
| US4443347A | Proppant charge and method | Emerging Cross-Sectional Technologies | 111 | Expired |
| US4862967A | Method of employing a coated elastomeric packing element | Fixed Constructions | 94 | Expired |
| US4495073A | Retrievable screen device for drill pipe and the like | Performing Operations; Transporting | 90 | Expired |
| US4747201A | Boosterless perforating gun | Emerging Cross-Sectional Technologies | 90 | Expired |
| US4541486A | One trip perforating and gravel pack system | Fixed Constructions | 89 | Expired |
| US4457376A | Flapper type safety valve for subterranean wells | Fixed Constructions | 89 | Expired |
| US4531552A | Concentric insulating conduit | Mechanical Engineering; Lighting; Heating | 88 | Expired |
| US4657089A | Method and apparatus for initiating subterranean well perforating gun firing from bottom to top | Mechanical Engineering; Lighting; Heating | 87 | Expired |
| US4708208A | Method and apparatus for setting, unsetting, and retrieving a packer from a subterranean well | Fixed Constructions | 85 | Expired |
| US4664819A | Proppant charge and method | Emerging Cross-Sectional Technologies | 81 | Expired |
| US3963076A | Method and apparatus for gravel packing well bores | Fixed Constructions | 80 | Expired |
| US4523649A | Rotational alignment method and apparatus for tubing conveyed perforating guns | Fixed Constructions | 77 | Expired |
| US4564459A | Proppant charge and method | Emerging Cross-Sectional Technologies | 74 | Expired |
| US4778008A | Selectively releasable and reengagable expansion joint for subterranean well tubing strings | Fixed Constructions | 65 | Expired |
| US4552218A | Unloading injection control valve | Fixed Constructions | 61 | Expired |
| US4478286A | Equalizing valve for subterranean wells | Fixed Constructions | 59 | Expired |
| US4531587A | Downhole flapper valve | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4611658A | High pressure retrievable gravel packing apparatus | Fixed Constructions | 52 | Expired |
| US4648455A | Method and apparatus for steam injection in subterranean wells | Fixed Constructions | 52 | Expired |
| US4498536A | Method of washing, injecting swabbing or flow testing subterranean wells | Fixed Constructions | 51 | Expired |
| US3987854A | Gravel packing apparatus and method | Fixed Constructions | 50 | Expired |
| US4508167A | Selective casing bore receptacle | Fixed Constructions | 50 | Expired |
| US4730835A | Anti-extrusion seal element | Fixed Constructions | 49 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.