David Spells
4Patents
3h-index
5Co-inventors
43Inventor score
Filing activity: Jan 31, 2002 → Sep 2, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7467351B1 | Layered master pages | Physics | 26 | Expired |
| US8020092B1 | Layered master pages | Physics | 5 | Active |
| US8739120B2 | System and method for stage rendering in a software authoring tool | Electricity | 4 | Active |
| US8700994B1 | Layered master pages | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.