David Simpson
16Patents
10h-index
11Co-inventors
69Inventor score
Filing activity: Dec 24, 1984 → Apr 17, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5706819A | Ultrasonic diagnostic imaging with harmonic contrast agents | Human Necessities | 126 | Expired |
| US5867874A | Implement holder attached to a hat or cap | Emerging Cross-Sectional Technologies | 57 | Expired |
| US5951478A | Two pulse technique for ultrasonic harmonic imaging | Human Necessities | 43 | Expired |
| US6676606B2 | Ultrasonic diagnostic micro-vascular imaging | Physics | 37 | Expired |
| US4612948A | Portable shelter or tent enclosure, structures and components therefor | Emerging Cross-Sectional Technologies | 32 | Expired |
| USD407537S | Implement holder for a hat or cap | General | 27 | Expired |
| US6620103B1 | Ultrasonic diagnostic imaging system for low flow rate contrast agents | Physics | 22 | Expired |
| US6508767B2 | Ultrasonic harmonic image segmentation | Physics | 21 | Expired |
| USD412611S | Implement holder attached to a hat or cap | General | 15 | Expired |
| US4884589A | Cover for collapsible shelter | Emerging Cross-Sectional Technologies | 13 | Expired |
| US9327955B2 | Funnel for facilitating emptying of a liquid-filled container | Performing Operations; Transporting | 5 | Active |
| US10130164B2 | Collapsible gantry car wash | Human Necessities | 1 | Active |
| US11481880B2 | Power doppler imaging system and method with improved clutter suppression | Physics | 0 | Active |
| USRE43048E1 | Ultrasonic diagnostic imaging with harmonic contrast agents | General | 0 | Expired |
| US11259662B2 | Sports memorabilia jersey hanger with transparent body form and athlete related imagery | Human Necessities | 0 | Active |
| US10010205B2 | Sports memorabilia jersey hanger with transparent body form and athlete related imagery | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.