John Bertrand
9Patents
8h-index
13Co-inventors
66Inventor score
Filing activity: Dec 3, 1976 → Jun 5, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5150410A | Secure digital conferencing system | Electricity | 99 | Expired |
| US4720861A | Digital speech coding circuit | Physics | 77 | Expired |
| US4093989A | Spectrum analyzer using digital filters | Physics | 50 | Expired |
| US4890327A | Multi-rate digital voice coder apparatus | Physics | 34 | Expired |
| US6078612A | Radio architecture for an advanced digital radio in a digital communication system | Electricity | 28 | Expired |
| US4321680A | Spectrum analyzer with frequency band selection | Physics | 21 | Expired |
| US4612625A | Decimator employing finite impulse response digital filters | Electricity | 14 | Expired |
| US6188720A | Modulation and signaling converter | Electricity | 9 | Expired |
| US5881096A | Method for removing bias in a frequency hopping digital communication system | Electricity | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.