Frank B. Cramer
12Patents
9h-index
1Co-inventors
62Inventor score
Filing activity: Oct 7, 1974 → Apr 15, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4224948A | Wrist borne pulse meter/chronometer | Physics | 100 | Expired |
| US6012533A | Fire safety system | Emerging Cross-Sectional Technologies | 41 | Expired |
| US5918679A | Fire safety system | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4158697A | Coal treatment apparatus | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4033113A | Steam generation with coal | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US3933128A | Steam generation with coal | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US3966582A | Solubilization and reaction of coal and like carbonaceous feedstocks to hydrocarbons and apparatus therefor | Chemistry; Metallurgy | 12 | Expired |
| US4148356A | Steam generation with coal | Emerging Cross-Sectional Technologies | 9 | Expired |
| US3966583A | Coal treatment process and apparatus | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4169583A | Apparatus for reducing ore | Chemistry; Metallurgy | 9 | Expired |
| US4050904A | Solubilization and reaction of coal and like carbonaceous feedstocks to hydrocarbons and apparatus therefor | Chemistry; Metallurgy | 8 | Expired |
| US4104056A | Ore reduction using molten salts | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.