David J. Ritch
22Patents
17h-index
20Co-inventors
77Inventor score
Filing activity: Apr 30, 1997 → Nov 17, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5934758A | Membrane chair | Emerging Cross-Sectional Technologies | 202 | Expired |
| USD423261S | Chair | General | 83 | Expired |
| US6030037A | Horizontally nestable chair | Human Necessities | 75 | Expired |
| USD411928S | Chair | General | 54 | Expired |
| USD546085S1 | Seating unit | General | 52 | Expired |
| US6286901A | Chair | Human Necessities | 42 | Expired |
| USD530104S1 | Work space divider | General | 37 | Expired |
| USD407576S | Chair | General | 35 | Expired |
| USD417793S | Chair | General | 34 | Expired |
| USD535838S1 | Seating unit | General | 34 | Expired |
| US6142566A | Chair | Human Necessities | 32 | Expired |
| US6766748B2 | Table with support leg having an elongated channel | Human Necessities | 27 | Expired |
| USD467445S1 | Chair | General | 23 | Expired |
| USD460630S1 | Privacy screen | General | 23 | Expired |
| US6764144B2 | Storage unit | Human Necessities | 22 | Expired |
| USD548475S1 | Seating unit | General | 17 | Expired |
| US7325873B2 | Seating unit | Human Necessities | 17 | Expired |
| USD575968S1 | Table leg | General | 13 | Expired |
| USD412416S | Base | General | 13 | Expired |
| USD580687S1 | Table leg | General | 6 | Expired |
| US7874620B2 | Health care chair | Human Necessities | 5 | Active |
| US8596593B2 | Worksurface leg mount system | Human Necessities | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.