Prabhat K. Gupta
21Patents
13h-index
24Co-inventors
81Inventor score
Filing activity: Dec 30, 1976 → Aug 12, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5596676A | Mode-specific method and apparatus for encoding signals containing speech | Physics | 342 | Expired |
| US5649055A | Voice activity detector for speech signals in variable background noise | Physics | 115 | Expired |
| US5459814A | Voice activity detector for speech signals in variable background noise | Physics | 98 | Expired |
| US5734789A | Voiced, unvoiced or noise modes in a CELP vocoder | Physics | 88 | Expired |
| US5949888A | Comfort noise generator for echo cancelers | Physics | 57 | Expired |
| US5666370A | High performance error control coding in channel encoders and decoders | Electricity | 44 | Expired |
| US5809463A | Method of detecting double talk in an echo canceller | Electricity | 40 | Expired |
| US5491771A | Real-time implementation of a 8Kbps CELP coder on a DSP pair | Physics | 39 | Expired |
| US4244721A | Method of making composite borosilicate glass articles | Chemistry; Metallurgy | 26 | Expired |
| US5689556A | Method of detecting narrow-band signals in an echo canceller | Electricity | 23 | Expired |
| US5533133A | Noise suppression in digital voice communications systems | Electricity | 22 | Expired |
| US4181403A | Optical fiber with compression surface layer | Chemistry; Metallurgy | 21 | Expired |
| US5649012A | Method for synthesizing an echo path in an echo canceller | Electricity | 13 | Expired |
| US5633982A | Removal of swirl artifacts from celp-based speech coders | Physics | 12 | Expired |
| US10182271B1 | Systems and methods for playback of summary media content | Electricity | 10 | Active |
| US5793755A | Echo suppressor for facsimile calls in a satellite network | Electricity | 3 | Expired |
| US11120027B2 | Systems and methods for identifying a category of a search term and providing search results subject to the identified category | Physics | 1 | Active |
| US4362542A | Method of producing a strong optical fiber | Chemistry; Metallurgy | 1 | Expired |
| US12061634B2 | Methods and systems for performing context maintenance on search queries in a conversational search environment | Physics | 0 | Active |
| US11880373B2 | Systems and methods for identifying a category of a search term and providing search results subject to the identified category | Physics | 0 | Active |
| US10778558B2 | Methods and apparatus to improve computing resource utilization | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.