Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Lloyd E. Matthews — 4 Patents

ZEZenith Electronics: 2 patents #142 of 411Top 35%
ZRZenith Radio: 2 patents #44 of 184Top 25%
Berwyn, IL: #32 of 152 inventorsTop 25%
Illinois: #21,640 of 84,256 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Lloyd E. Matthews has been granted 4 US patents while listed as an inventor at Zenith Electronics. The first was granted in 1980 and the most recent in December 1989. Lloyd E. Matthews ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Lloyd E. Matthews in Berwyn, IL, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4885510 Beam current compensated vertical size control 1989-12-05 $642,000
4652987 Regulator with rectifier IR drop compensation Philip J. Nowaczyk 1987-03-24 $1,393,000
4289994 Vertical drive circuit for video display Gregory J. Beaumont 1981-09-15 $1,063,000
4234828 Self-oscillating sawtooth current deflection generator 1980-11-18 $3,584,000