GROUP CBS, INC.
134Patents
1Active
134Granted
43Portfolio score
Filing activity: Aug 20, 1973 → Feb 24, 2017
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6295092A | System for analyzing television programs | Electricity | 133 | Expired |
| US3970803A | Printed sound track system | Physics | 112 | Expired |
| US4185808A | Connector hardware for percussive instruments | Physics | 92 | Expired |
| US4485457A | Memory system including RAM and page switchable ROM | Human Necessities | 85 | Expired |
| US4605950A | Two channel compatible high definition television broadcast system | Electricity | 65 | Expired |
| US4602381A | Adaptive expanders for FM stereophonic broadcasting system utilizing companding of difference signal | Electricity | 64 | Expired |
| US4072821A | Microphone system for producing signals for quadraphonic reproduction | Electricity | 61 | Expired |
| US4179704A | Television system for displaying and recording paths of motion | Electricity | 61 | Expired |
| US4064530A | Noise reduction system for color television | Electricity | 61 | Expired |
| US4050084A | Comb filter for television signals having adaptive features | Electricity | 58 | Expired |
| US4096353A | Microphone system for producing signals for quadraphonic reproduction | Electricity | 54 | Expired |
| US4027333A | Multiplex color television transmission system | Electricity | 52 | Expired |
| US4501424A | Manual controller for video system | Physics | 49 | Expired |
| US4513966A | Vehicle jump for a toy vehicle game | Human Necessities | 43 | Expired |
| US4268864A | Image enhancement system for television | Electricity | 43 | Expired |
| US4409877A | Electronic tone generating system | Physics | 39 | Expired |
| US5994965A | Silicon carbide high frequency high power amplifier | Electricity | 37 | Expired |
| US5881115A | Method and system for automatically executing multiple procedures for a complex process facility | Physics | 34 | Expired |
| US4570250A | Optical sound-reproducing apparatus | Physics | 33 | Expired |
| US4064626A | Cutter for sheet material | Performing Operations; Transporting | 33 | Expired |
| US5977831A | Hybrid system for control and monitoring of an amplifier | Electricity | 32 | Expired |
| US4670784A | Methods for coping with non-uniform phosphor aging in dual mode television receivers | Electricity | 31 | Expired |
| US3981220A | Snare drum with tone ring | Physics | 30 | Expired |
| US4168510A | Television system for displaying and recording paths of motion | Electricity | 28 | Expired |
| US4406923A | Automatic loudness controller | Electricity | 28 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.