Conoco Inc.
864Patents
0Active
864Granted
45Portfolio score
Filing activity: Sep 22, 1975 → Sep 6, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5411104A | Coalbed methane drilling | Fixed Constructions | 359 | Expired |
| US4813495A | Method and apparatus for deepwater drilling | Fixed Constructions | 282 | Expired |
| US5402847A | Coal bed methane recovery | Fixed Constructions | 242 | Expired |
| US4418752A | Thermal oil recovery with solvent recirculation | Fixed Constructions | 219 | Expired |
| US4986355A | Process for the preparation of fluid loss additive and gel breaker | Emerging Cross-Sectional Technologies | 218 | Expired |
| US4848467A | Formation fracturing process | Chemistry; Metallurgy | 214 | Expired |
| US5285204A | Coil tubing string and downhole generator | Emerging Cross-Sectional Technologies | 209 | Expired |
| US4957165A | Well treatment process | Emerging Cross-Sectional Technologies | 207 | Expired |
| US4986354A | Composition and placement process for oil field chemicals | Emerging Cross-Sectional Technologies | 202 | Expired |
| US4986353A | Placement process for oil field chemicals | Emerging Cross-Sectional Technologies | 187 | Expired |
| US5285008A | Spoolable composite tubular member with integrated conductors | Human Necessities | 147 | Expired |
| US4817721A | Reducing the permeability of a rock formation | Chemistry; Metallurgy | 137 | Expired |
| US5172765A | Method using spoolable composite tubular member with energy conductors | Electricity | 136 | Expired |
| US5228518A | Downhole activated process and apparatus for centralizing pipe in a wellbore | Fixed Constructions | 128 | Expired |
| US4886354A | Method and apparatus for measuring crystal formation | Physics | 123 | Expired |
| US4739654A | Method and apparatus for downhole chromatography | Fixed Constructions | 119 | Expired |
| US4790383A | Method and apparatus for multi-zone casing perforation | Fixed Constructions | 96 | Expired |
| US5097870A | Composite tubular member with multiple cells | Human Necessities | 92 | Expired |
| US4732213A | Colloidal silica-based fluid diversion | Chemistry; Metallurgy | 88 | Expired |
| US5049738A | Laser-enhanced oil correlation system | Physics | 86 | Expired |
| US5253709A | Method and apparatus for sealing pipe perforations | Fixed Constructions | 83 | Expired |
| US5469916A | System for depth measurement in a wellbore using composite coiled tubing | Fixed Constructions | 78 | Expired |
| US6473696B1 | Method and process for prediction of subsurface fluid and rock pressures in the earth | Physics | 76 | Expired |
| US5363929A | Downhole fluid motor composite torque shaft | Emerging Cross-Sectional Technologies | 75 | Expired |
| US5176180A | Composite tubular member with axial fibers adjacent the side walls | Emerging Cross-Sectional Technologies | 74 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.