John R. Smith
10Patents
6h-index
15Co-inventors
63Inventor score
Filing activity: May 29, 1975 → Sep 8, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3958633A | Flapper-type subsurface safety valve | Fixed Constructions | 49 | Expired |
| US5165093A | Interstitial X-ray needle | Electricity | 40 | Expired |
| USRE35383E | Interstitial X-ray needle | General | 35 | Expired |
| US5027741A | Fire escape device | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4441312A | Combined cycle ramjet engine | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4753266A | Valve assembly | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4517689A | Toilet seat | Human Necessities | 5 | Expired |
| US8056359B2 | Fast freeze shelf | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US11981590B2 | Multiple chamber septic tank with a plurality of large and small access ports | Emerging Cross-Sectional Technologies | 0 | Active |
| USD522586S1 | Emergency address marker | General | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.