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USPTO Patent Rankings Data through Dec 31, 2025
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Leonard Dietch — 7 Patents

ZEZenith Electronics: 6 patents #53 of 411Top 15%
ZRZenith Radio: 1 patents #81 of 184Top 45%
Skokie, IL: #92 of 674 inventorsTop 15%
Illinois: #13,121 of 84,256 inventorsTop 20%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
Leonard Dietch has been granted 7 US patents while listed as an inventor at Zenith Electronics. The first was granted in 1980 and the most recent in May 1988. Leonard Dietch ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Leonard Dietch in Skokie, IL, US.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4745329 Front assembly for an ultra-high resolution color cathode ray tube having an improved shadow mask compensated for diffraction and process therefor 1988-05-17 $2,527,000
4737681 Support means for a tensioned foil shadow mask James R. Fendley, Paul Strauss, John M. Jarosz 1988-04-12 $6,784,000
4705357 Shadow mask having aperture occlusion prevention means 1987-11-10 $843,000
4680196 Method for shadow mask protection during manufacture 1987-07-14 $4,355,000
4593225 Tension mask colar cathode ray tube Kazimir Palac 1986-06-03 $1,561,000
4575691 Cable isolator with overvoltage protection Raymond G. Capek, Anthony Cocco, Michael Livshits 1986-03-11 $4,313,000
4217521 High potential static discharge means for television cathode ray tubes James W. Schwartz 1980-08-12 $1,273,000