David Campbell
10Patents
5h-index
12Co-inventors
63Inventor score
Filing activity: Oct 3, 1989 → Dec 4, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5013188A | Process for replacing a length of buried pipe | Mechanical Engineering; Lighting; Heating | 41 | Expired |
| US5032048A | Quick-fastening nut | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4998453A | Hydraulic bolt tensioner | Performing Operations; Transporting | 27 | Expired |
| USD601847S1 | Hot water dispenser | General | 22 | Expired |
| US9874874B2 | Dynamic compliance monitoring of unmanned vehicles | Performing Operations; Transporting | 9 | Active |
| US5249486A | Torque wrench | Performing Operations; Transporting | 4 | Expired |
| USD345612S | Self-serve water dispenser kiosk | General | 4 | Expired |
| US5788411A | Roller compacted concrete dam and method of construction | Fixed Constructions | 2 | Expired |
| US6374900B1 | Upper mould holder for a die holder assembly used in die-casting machines | Performing Operations; Transporting | 1 | Expired |
| US12420014B2 | Dosing of incretin pathway drugs | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.