William Callahan
4Patents
2h-index
4Co-inventors
41Inventor score
Filing activity: Sep 9, 1985 → Mar 12, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4645227A | Pintle bracket | Performing Operations; Transporting | 11 | Expired |
| US6491275B1 | Computer accessory having assemblage of mouse pad and paper pad | Emerging Cross-Sectional Technologies | 7 | Expired |
| US11579119B1 | Radial springs on sensor arms of pipeline inspection tool | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11680927B1 | Dual layer circuit board for sensors on a pipeline inspection tool | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.