Daniel Campbell
6Patents
2h-index
8Co-inventors
44Inventor score
Filing activity: May 25, 1977 → Dec 23, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4098342A | Method and apparatus for maintaining electric cable inside drill pipe | Fixed Constructions | 20 | Expired |
| US4796225A | Programmable dynamic shift register with variable shift control | Physics | 3 | Expired |
| US4797846A | Digital resonant filter | Electricity | 1 | Expired |
| US12020669B1 | Mobile steel guitar | Physics | 1 | Active |
| US12056382B2 | Inference in memory | Physics | 0 | Active |
| US9445131B1 | De-blocking and de-banding filter with adjustable filter strength for video and image processing | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.