David Upton Johnson
3Patents
3h-index
4Co-inventors
39Inventor score
Filing activity: Sep 30, 1991 → Aug 1, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6082724A | Variable speed signature collating apparatus | Performing Operations; Transporting | 48 | Expired |
| US5622268A | Apparatus for calipering a collated assemblage | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5187479A | Backlash compensation circuit for use with an incremental encoder | Electricity | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.