David Markham
6Patents
3h-index
6Co-inventors
50Inventor score
Filing activity: Sep 29, 1982 → Oct 8, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4455234A | Process of extracting a metal value | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6317191A | Process for viewing a positive motion picture film scene image with integral audio soundtrack | Physics | 5 | Expired |
| US6400399B1 | Process for viewing a motion picture film with concurrently displayed subtitle text | Physics | 4 | Expired |
| US6422702B1 | Method for monitoring film remaining in a motion picture film magazine | Physics | 1 | Expired |
| US4577290A | Replicator with improved propagation performance | Physics | 0 | Expired |
| US10204531B2 | Injection dummy | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.