Donald Chadwick
48Patents
27h-index
36Co-inventors
85Inventor score
Filing activity: Nov 10, 1975 → Jul 30, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6035901A | Woven fabric membrane for a seating surface | Emerging Cross-Sectional Technologies | 254 | Expired |
| US6059368A | Office chair | Emerging Cross-Sectional Technologies | 249 | Expired |
| US6386634B1 | Office chair | Emerging Cross-Sectional Technologies | 224 | Expired |
| US6588842B2 | Backrest | Emerging Cross-Sectional Technologies | 196 | Expired |
| US6722741B2 | Seating structure having a backrest with a bowed section | Emerging Cross-Sectional Technologies | 175 | Expired |
| US6125521A | Process for making an office chair | Emerging Cross-Sectional Technologies | 170 | Expired |
| US5772282A | Tilt control mechanism for a chair | Emerging Cross-Sectional Technologies | 168 | Expired |
| US4889385A | Chair seat-and-back support | Human Necessities | 164 | Expired |
| US6733080B2 | Seating structure having a backrest with a flexible membrane and a moveable armrest | Emerging Cross-Sectional Technologies | 162 | Expired |
| US4529247A | One-piece shell chair | Emerging Cross-Sectional Technologies | 162 | Expired |
| US6966604B2 | Chair with a linkage assembly | Emerging Cross-Sectional Technologies | 159 | Expired |
| US6702390B2 | Support assembly for a seating structure | Emerging Cross-Sectional Technologies | 145 | Expired |
| US6726286B2 | Seating structure having a fabric with a weave pattern | Emerging Cross-Sectional Technologies | 139 | Expired |
| US7594700B2 | Contoured seating structure | Emerging Cross-Sectional Technologies | 123 | Expired |
| USD346279S | Chair | General | 118 | Expired |
| US7887131B2 | Lumbar support | Human Necessities | 112 | Active |
| USD289120S | Chair shell | General | 102 | Expired |
| US5765804A | Pneumatic support colunm for a chair | Emerging Cross-Sectional Technologies | 78 | Expired |
| US4533791A | Input/output device arrangements for terminals | Emerging Cross-Sectional Technologies | 72 | Expired |
| USD386023S | Seat and back unit for a chair | General | 61 | Expired |
| USD377431S | Seat and back unit for a chair | General | 60 | Expired |
| USD471024S1 | Chair | General | 52 | Expired |
| USD420523S | Chair | General | 37 | Expired |
| US8480171B2 | Office chair | Human Necessities | 36 | Active |
| USD607661S1 | Chair | General | 32 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.