Pierre Dobrovolny — 30 Patents at Zenith Electronics

Pierre Dobrovolny has been granted 30 US patents while listed as an inventor at Zenith Electronics. The first was granted in 1983 and the most recent in December 2007. Pierre Dobrovolny ranks #121,623 of 4,157,543 US inventors in our database (top 2.9%). Patent records list Pierre Dobrovolny in North Riverside, IL, US.

Issued Patents All Time

Showing 1–25 of 30 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
7310505	Attenuation control for tuners	—	2007-12-18
7072636	Printed circuit doubly balanced mixer for upconverter	—	2006-07-04
6675005	Printed single balanced downconverter mixer	—	2004-01-06
6650199	RF A/B switch with substantial isolation	—	2003-11-18
6472957	Low power switchable filter tuner	—	2002-10-29
6281857	Dipole UHF antenna	—	2001-08-28
6181292	Combined UHF and VHF antenna	—	2001-01-30
6150993	Adaptive indoor antenna system	—	2000-11-21
6133965	Digital AGC control for high definition television tuner	—	2000-10-17
6070061	Adjacent channel rejection in double conversion tuner	—	2000-05-30
6035185	Selective RF circuit with varactor tuned bandpass switched bandpass filters	James Wolford	2000-03-07
5923221	Oscillator for digital ATV signals having low phase noise	—	1999-07-13
5917386	Printed circuit transformer hybrids for RF mixers	—	1999-06-29
5834988	Frequency compensated PIN diode attenuator	—	1998-11-10
5752179	Selective RF circuit with varactor tuned and switched bandpass filters	—	1998-05-12	$4,673,000
5420646	Bandswitched tuning system having a plurality of local oscillators for a digital television receiver	—	1995-05-30	$3,679,000
5311318	Double conversion digital tuning system using separate digital numbers for controlling the local oscillators	—	1994-05-10	$2,155,000
5280648	Double-balanced high level wide band RF mixer	—	1994-01-18	$1,679,000
5270824	AGC circuit for double conversion digital television tuner	—	1993-12-14	$716,000
5027163	High level wide band RF mixer	—	1991-06-25	$968,000
4823400	Radio frequency mixer	—	1989-04-18	$4,846,000
4621245	Intermediate frequency filter for a DBS receiver	Dominic J. Nicoletto	1986-11-04	$630,000
4571560	Switched bandpass filter	—	1986-02-18	$1,873,000
4523159	Microwave oscillator and single balanced mixer for satellite television receiver	—	1985-06-11	$1,875,000
4480338	Lowpass-highpass electronic switch	—	1984-10-30	$4,288,000

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Pierre Dobrovolny — 30 Patents

Issued Patents All Time

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