KK

Karl-Heinz Kupfer

U.S. Philips: 11 patents #220 of 8,851Top 3%
Overall (All Time): #475,093 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
4803549 Low-pass filter for limiting the frequency band of a luminance signal 1989-02-07
4796101 Automatic FM sideband level control for video recorders 1989-01-03
4768962 Feed-through connector for RF signals Paul Friese 1988-09-06
4756024 RF-input circuit arrangement for a television tuner 1988-07-05
4736457 Circuit arrangement for a tuner for changing over two frequency bands 1988-04-05
4710974 Circuit arrangement for a tuner for changing over several frequency ranges 1987-12-01
4667167 Circuit for automatic gain control 1987-05-19
4573211 Two-circuit resonant bandpass filter for television tuners 1986-02-25
4525681 Narrow-band amplifier, more specifically television intermediate frequency amplifier 1985-06-25
4467393 Trimming capacitor 1984-08-21
4369417 Circuit for tunable radio-frequency circuits 1983-01-18