Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Joseph Kadlec — 5 Patents

ZEZenith Electronics: 4 patents #84 of 411Top 25%
ZRZenith Radio: 1 patents #81 of 184Top 45%
Berwyn, IL: #27 of 152 inventorsTop 20%
Illinois: #18,025 of 84,256 inventorsTop 25%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Joseph Kadlec has been granted 5 US patents while listed as an inventor at Zenith Electronics. The first was granted in 1981 and the most recent in August 1988. Joseph Kadlec ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Joseph Kadlec in Berwyn, IL, US.

Patents per Year

Patents granted per year, 1981 to 1988Bar chart with a peak of 2 patents in 1987.peak 21981: 1 patents19811986: 1 patents19861987: 2 patents19871988: 1 patents1988

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4766355 Automatic vertical size control Kenneth W. Kociolek, Thaddeus P. Okrzesik 1988-08-23 $1,268,000
4698681 Dual intensity video circuit Kenneth W. Kociolek 1987-10-06 $5,077,000
4682226 Monostable multivibrator for video display 1987-07-21 $4,642,000
4621240 Temperature compensated oscillator for raster scanned video display Robert J. Alvord, Robert L. Amberg, Michael Fegan 1986-11-04 $630,000
4253117 Multivibrator synchronization system for video display 1981-02-24 $512,000