Tim Coffield
16Patents
12h-index
19Co-inventors
67Inventor score
Filing activity: Oct 17, 1997 → Nov 18, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6729691B2 | Chair back construction | Human Necessities | 228 | Expired |
| US6669292B2 | Ergonomic chair | Human Necessities | 192 | Expired |
| US7014269B2 | Chair back construction | Human Necessities | 156 | Expired |
| US7066537B2 | Chair back construction | Human Necessities | 153 | Expired |
| US6168239A | Seat back with shaped internal ribs | Emerging Cross-Sectional Technologies | 65 | Expired |
| USD476821S1 | Ergonomic chair | General | 65 | Expired |
| US5951110A | Contoured plastic seat back | Emerging Cross-Sectional Technologies | 49 | Expired |
| USD462187S1 | Chair | General | 24 | Expired |
| US6033027A | Seat back with corner indentations | Emerging Cross-Sectional Technologies | 24 | Expired |
| USD460869S1 | Chair | General | 17 | Expired |
| USD477151S1 | Armless ergonomic chair | General | 16 | Expired |
| US6523900B1 | Chair seat | Human Necessities | 16 | Expired |
| US6042187A | Seat back with aperture identifiers | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6652030B2 | Chair seat | Human Necessities | 8 | Expired |
| USD462858S1 | Chair back frame | General | 2 | Expired |
| USD477164S1 | Chair back | General | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.