Blaupunkt-Werke GmbH
138Patents
0Active
138Granted
42Portfolio score
Filing activity: Feb 21, 1975 → Apr 2, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4079419A | Method and apparatus for transmitting and receiving additional information in a television signal | Electricity | 283 | Expired |
| US4476573A | Radio link remote control signaling system, and method | Physics | 113 | Expired |
| US4277817A | Large-area light source | Physics | 85 | Expired |
| US5339455A | Radio receiver adjacent-channel interference suppression circuit | Electricity | 76 | Expired |
| US4628526A | Method and system for matching the sound output of a loudspeaker to the ambient noise level | Electricity | 66 | Expired |
| US4542525A | Method and apparatus for classifying audio signals | Physics | 66 | Expired |
| US4796247A | Compact disc (CD) player and method of compensating for tracking jumps | Emerging Cross-Sectional Technologies | 56 | Expired |
| US4741185A | Vehicular tape deck locking and lock-state indicating arrangement | Emerging Cross-Sectional Technologies | 49 | Expired |
| US4313222A | H-F Portion of TV receiver | Electricity | 49 | Expired |
| US5430890A | Radio receiver for mobile reception with sampling rate oscillator frequency being an integer-number multiple of reference oscillation frequency | Electricity | 47 | Expired |
| US5119093A | Apparatus for converting a signal of a first sample rate into a signal of a second sample rate | Electricity | 44 | Expired |
| US4720700A | Security system and method for electronic apparatus, particularly car radios or similar automotive audio equipment | Performing Operations; Transporting | 44 | Expired |
| US4476582A | Mobile broadcast receiver with channels selectable according to reception location | Electricity | 43 | Expired |
| US4868881A | Method and system of background noise suppression in an audio circuit particularly for car radios | Electricity | 41 | Expired |
| US4633247A | Remote control system for selectively activating and inactivating equipment | Physics | 39 | Expired |
| US5012255A | Combination antenna and windshield heater | Electricity | 38 | Expired |
| US5659947A | Device for automatically populating a top and a bottom side of printed-circuit boards with SMD components | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4027112A | Head-rest and loudspeaker combination | Performing Operations; Transporting | 36 | Expired |
| US5493717A | Adjacent channel interference detection & suppression circuit | Electricity | 36 | Expired |
| US4850037A | Method and circuit for receiving radio wave, especially multi-antenna diversity reception and apparatus | Electricity | 32 | Expired |
| US4161995A | Loudspeaker housing forming a closed, damped system, particularly for automotive installation | Electricity | 31 | Expired |
| US4075591A | Printed circuit coils | Electricity | 30 | Expired |
| US4947251A | Suppression of flicker effects in a television receiver | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4939791A | Diversity radio receiver for use with multiple antenna, particularly car radio | Electricity | 29 | Expired |
| US3949401A | Frequency identification circuit for broadcast traffic information reception systems | Physics | 28 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.