Alan J. Sallwasser
22Patents
12h-index
37Co-inventors
81Inventor score
Filing activity: Nov 18, 1991 → Mar 30, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5954131A | Method and apparatus for conveying a logging tool through an earth formation | Fixed Constructions | 91 | Expired |
| US6179055A | Conveying a tool along a non-vertical well | Fixed Constructions | 89 | Expired |
| US6134892A | Cooled electrical system for use downhole | Electricity | 78 | Expired |
| US6285014A | Downhole induction heating tool for enhanced oil recovery | Electricity | 67 | Expired |
| US8925213B2 | Wellbore caliper with maximum diameter seeking feature | Physics | 46 | Active |
| US5687806A | Method and apparatus for drilling with a flexible shaft while using hydraulic assistance | Fixed Constructions | 37 | Expired |
| US5746279A | Method and apparatus for changing bits while drilling with a flexible shaft | Fixed Constructions | 23 | Expired |
| US6951114B2 | Reliable outdoor instrument cooling system | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5198770A | Logging apparatus having a wall engaging pad with longitudinally aligned detecting devices | Physics | 18 | Expired |
| US5484176A | Latch mechanism | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5596142A | Well logging apparatus comprising a measuring pad and a combinaton device including such apparatus | Fixed Constructions | 15 | Expired |
| US10301927B2 | Metal sealing device | Fixed Constructions | 13 | Active |
| US8813876B2 | Downhole tool impact dissipating tool | Fixed Constructions | 8 | Active |
| US5508514A | Well logging device with a pad | Physics | 4 | Expired |
| US9803468B2 | Wellbore caliper with maximum diameter seeking feature | Physics | 2 | Active |
| US10030503B2 | Spring with integral borehole wall applied sensor | Fixed Constructions | 1 | Active |
| US9567812B2 | Downhole tool impact dissipating tool | Fixed Constructions | 0 | Active |
| US10253576B2 | Downhole tool impact dissipating tool | Fixed Constructions | 0 | Active |
| US8316703B2 | Flexible coupling for well logging instruments | Fixed Constructions | 0 | Active |
| US9739102B2 | Downhole tool impact dissipating tool | Fixed Constructions | 0 | Active |
| US11815352B2 | Apparatus and method for determining borehole size with a borehole imaging tool | Physics | 0 | Active |
| US10605949B2 | Methods and apparatus for performing a well survey | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.