John E. Callan
13Patents
10h-index
5Co-inventors
61Inventor score
Filing activity: May 12, 1975 → Jul 25, 1988
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4504927A | Programmable controller with expandable I/O interface circuitry | Physics | 75 | Expired |
| US4065034A | Gun-type dispenser for heat softenable adhesive or sealant compounds | Physics | 46 | Expired |
| US5038317A | Programmable controller module rack with a relative rack slot addressing mechanism | Physics | 45 | Expired |
| US3976530A | Method for producing a two component polymeric tape | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4435706A | Switch network | Electricity | 23 | Expired |
| US4092282A | Hot melt sealant composition | Chemistry; Metallurgy | 22 | Expired |
| US4079313A | Digital watts transducer | Physics | 20 | Expired |
| US4418374A | Latch relay drive circuit | Electricity | 14 | Expired |
| US4507571A | Optically coupled input circuit for digital control | Physics | 10 | Expired |
| US4127545A | Hot melt crosslinked butyl sealant | Chemistry; Metallurgy | 10 | Expired |
| US4112020A | Hot melt butyl sealant intermediate | Chemistry; Metallurgy | 9 | Expired |
| US4039855A | Solid state relay | Electricity | 1 | Expired |
| US4288744A | Summing watt-hour transducer | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.