William Perlman
7Patents
7h-index
9Co-inventors
56Inventor score
Filing activity: Mar 13, 1978 → Jan 13, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5583576A | Rating-dependent parental lock-out for television reception | Electricity | 226 | Expired |
| US6125259A | Intelligent and user friendly channel up/down control | Electricity | 122 | Expired |
| US5758145A | Method and apparatus for generating dynamic and hybrid sparse indices for workfiles used in SQL queries | Emerging Cross-Sectional Technologies | 45 | Expired |
| US5978792A | Method and apparatus for generating dynamic and hybrid sparse indices for workfiles used in SQL queries | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4186802A | Fracing process | Fixed Constructions | 31 | Expired |
| US4665990A | Multiple-stage coal seam fracing method | Fixed Constructions | 28 | Expired |
| US4566539A | Coal seam fracing method | Fixed Constructions | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.