Marshall Williams
18Patents
9h-index
11Co-inventors
69Inventor score
Filing activity: Aug 22, 1975 → Dec 21, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4560983A | Dynamically interactive responsive control device and system | Electricity | 140 | Expired |
| US4427978A | Multiplexed liquid crystal display having a gray scale image | Physics | 105 | Expired |
| US3964417A | Water vehicles | Performing Operations; Transporting | 35 | Expired |
| US7921309B1 | Systems and methods for determining and managing the power remaining in a handheld electronic device | Physics | 25 | Active |
| US4446389A | Quadrature tach decoder circuit | Physics | 14 | Expired |
| US4594563A | Signal comparison circuit and phase-locked-loop using same | Electricity | 12 | Expired |
| US4530107A | Shift register delay circuit | Electricity | 11 | Expired |
| US6437828B1 | Line-quadrupler in home theater uses line-doubler of AV-part and scaler in graphics controller of PC-part | Physics | 11 | Expired |
| US4802023A | System for reading and writing vertical interval time code | Physics | 10 | Expired |
| US4786985A | Method and apparatus for extracting binary signals included in vertical blanking intervals of video signals | Physics | 8 | Expired |
| US4532560A | Apparatus and method for indicating tape time | Physics | 7 | Expired |
| US4679098A | Video tape transport servo for variable tape speed control | Physics | 6 | Expired |
| US6580461B2 | Line-quadrupler in home theater uses line-doubler of AV-part and scaler in graphics controller of PC-part | Physics | 6 | Expired |
| US9042833B1 | Infrared and capacitance based sensing for proximity detection | Electricity | 4 | Active |
| US5768600A | Method for supplying DC power from a PC's internal power supply to any associated peripheral devices | Physics | 4 | Expired |
| US6014750A | Techniques for distributing/supplying intra-computer DC power to external peripheral devices of a computer system | Physics | 3 | Expired |
| US5153850A | Method and apparatus for modifying two's complement multiplier to perform unsigned magnitude multiplication | Physics | 2 | Expired |
| US4557434A | Tape remaining circuit | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.