Robert A. Cunningham
19Patents
10h-index
9Co-inventors
65Inventor score
Filing activity: Nov 19, 1976 → Jul 25, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4445734A | Telemetry drill pipe with pressure sensitive contacts | Fixed Constructions | 130 | Expired |
| US5548970A | Air handling system | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4548431A | Tool joint with internal/external make-up shoulders | Fixed Constructions | 31 | Expired |
| US4037465A | Ultrasonic probe system for the bore-side inspection of tubes and welds therein | Physics | 18 | Expired |
| US6099405A | Damper blade system | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5755810A | Hip implant prosthesis | Human Necessities | 15 | Expired |
| US4983081A | Apparatus and method for forming shiplap duct | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5421938A | Circular duct and apparatus and method of fabrication | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4694855A | Drill pipe inside blowout preventer | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4248314A | Shaft drill bit with overlapping cutter arrangement | Fixed Constructions | 10 | Expired |
| US5938524A | Damper blade system | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5186704A | Duct forming machine | Performing Operations; Transporting | 8 | Expired |
| US4391143A | Ultrasonic probe for inspecting double-wall tube | Physics | 6 | Expired |
| US5836814A | Damper blade system | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6080921A | Blade sharping device for a lever harp | Physics | 4 | Expired |
| US4431066A | Stressed relieved bit leg for an earth boring bit | Fixed Constructions | 4 | Expired |
| US6418831B1 | Tool holder and tab system for board cutting machine | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6422114B1 | Drive system for board cutting machine | Emerging Cross-Sectional Technologies | 1 | Expired |
| US9574454B2 | Full arc admission steam turbine | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.