John T. Sullivan
3Patents
1Active
3Granted
31Portfolio score
Filing activity: Jun 26, 1987 → Apr 20, 2009 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5823543A | Roller skate shock absorber system | Human Necessities | 28 | Expired |
| US7612660B1 | Pit road display | Performing Operations; Transporting | 1 | Active |
| US4781356A | Pinch type valves | Mechanical Engineering; Lighting; Heating | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.