William Douglas Walker
13Patents
4h-index
19Co-inventors
57Inventor score
Filing activity: Apr 27, 1990 → Oct 6, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6668810B1 | Ignition coil assembly with spark plug connector | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US6178957A | Pencil ignition coil assembly module | Electricity | 17 | Expired |
| US9272171B2 | Pivoting fluid conduit sequencing mechanism | Mechanical Engineering; Lighting; Heating | 12 | Active |
| US6114933A | Pencil ignition coil assembly module environmental shield | Electricity | 9 | Expired |
| US6650219B1 | Ignition coil core isolation | Electricity | 4 | Expired |
| US7131183B2 | Screw in high voltage housing terminal for ignition coil | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7053746B2 | Pencil ignition coil | Electricity | 3 | Expired |
| US6882259B1 | Using a circuit board for ignition coil internal connections | Electricity | 2 | Expired |
| US7209023B2 | Ignition coil with separating wall | Electricity | 2 | Expired |
| US6794974B2 | Ignition coil core isolation | Electricity | 2 | Expired |
| US5042734A | Drive roll assembly for strand winding apparatus | Performing Operations; Transporting | 1 | Expired |
| US10518117B2 | Firefighting nozzle | Performing Operations; Transporting | 0 | Active |
| US6956457B2 | Ignition coil core isolation | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.