Nicholas Zwick
9Patents
9h-index
6Co-inventors
54Inventor score
Filing activity: Nov 25, 1986 → Nov 20, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5161181A | Automatic number identification blocking system | Electricity | 147 | Expired |
| US4852149A | Automated call filter | Electricity | 102 | Expired |
| US5185786A | Automatic call center overflow retrieval system | Electricity | 62 | Expired |
| US5701340A | AD-HOC conferencing method | Electricity | 48 | Expired |
| US5638436A | Voice detection | Electricity | 36 | Expired |
| US5459781A | Selectively activated dual tone multi-frequency detector | Electricity | 30 | Expired |
| US6377576B1 | Telephone call setup procedure | Electricity | 21 | Expired |
| US4862492A | Measurement of transmission quality of a telephone channel | Electricity | 14 | Expired |
| US4760516A | Peripheral interrupt interface for multiple access to an interrupt level | Physics | 13 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.