John G. Ryan
13Patents
10h-index
18Co-inventors
69Inventor score
Filing activity: Apr 10, 1978 → Nov 6, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5111816A | System configuration for combined defibrillator/pacemaker | Human Necessities | 137 | Expired |
| US6044124A | Delta sigma PLL with low jitter | Electricity | 65 | Expired |
| US4868908A | Power supply down-conversion, regulation and low battery detection system | Electricity | 56 | Expired |
| US6462623B1 | Method and apparatus for PLL with improved jitter performance | Electricity | 53 | Expired |
| US4952864A | Power supply down-conversion, regulation and low battery detection system | Electricity | 51 | Expired |
| US6704908B1 | Method and apparatus for automatically generating a phase lock loop (PLL) | Electricity | 23 | Expired |
| US6414558B1 | Method and apparatus for random sequence generator | Electricity | 16 | Expired |
| US6198420A | Multiple level quantizer | Electricity | 13 | Expired |
| US6188294A | Method and apparatus for random sequence generator | Electricity | 12 | Expired |
| USD256509S | Hairsetter | General | 11 | Expired |
| USD319947S | Combined carrying case and containers for food, drink, and pencils | General | 10 | Expired |
| US4866389A | Circuit and method for measuring battery voltage by time of discharge of a capacitor | Physics | 9 | Expired |
| US6396424B1 | Bubble suppression method and apparatus | Electricity | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.