Donald E. Smith
26Patents
20h-index
22Co-inventors
85Inventor score
Filing activity: Jan 11, 1982 → Aug 1, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5806111A | Stretcher controls | Human Necessities | 216 | Expired |
| US6089593A | Ambulatory care chair | Emerging Cross-Sectional Technologies | 145 | Expired |
| US6315319A | Ambulatory care chair | Emerging Cross-Sectional Technologies | 127 | Expired |
| US5987671A | Stretcher center wheel mechanism | Human Necessities | 97 | Expired |
| US6846042B2 | Ambulatory care chair | Emerging Cross-Sectional Technologies | 89 | Expired |
| US6286165A | Stretcher center wheel mechanism | Human Necessities | 80 | Expired |
| US6505359B2 | Stretcher center wheel mechanism | Human Necessities | 76 | Expired |
| US6042052A | Retractable step fairing for amphibian airplane | Performing Operations; Transporting | 75 | Expired |
| US5613255A | Hospital bed having scissors lifting apparatus | Human Necessities | 74 | Expired |
| US6565112B2 | Ambulatory care chair | Emerging Cross-Sectional Technologies | 72 | Expired |
| US6598247B1 | Stretcher with mechanical power assist | Human Necessities | 55 | Expired |
| US6446283B1 | Convertible stretcher | Human Necessities | 51 | Expired |
| US6464208B1 | I-beam walk assist device | Human Necessities | 46 | Expired |
| US5627340A | Floor box with improved activation ring | Electricity | 43 | Expired |
| US5553984A | Encapsulated nut | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6772460B2 | Pedal arrangement for stretcher apparatus | Human Necessities | 34 | Expired |
| US6640361B2 | Convertible stretcher | Human Necessities | 33 | Expired |
| US5004100A | Golf club and bag security device | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5831212A | Electrical junction box for a poured concrete floor | Electricity | 25 | Expired |
| US6751815B2 | Convertible stretcher | Human Necessities | 21 | Expired |
| US4502259A | Trim strip with positioning leg | Performing Operations; Transporting | 10 | Expired |
| USD291903S | Compound bow with a cable tension adjustment | General | 8 | Expired |
| US4678219A | Helicopter cargo hook | Performing Operations; Transporting | 6 | Expired |
| USD282481S | Compound bow | General | 3 | Expired |
| US10144029B2 | Flexible auxiliary nozzle carrier | Performing Operations; Transporting | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.