Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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William H. Racca — 3 Patents

QEQuantum Electronics: 2 patents #1 of 7Top 15%
UNUnknown: 2 patents #12,644 of 83,584Top 20%
Barrington, RI: #109 of 323 inventorsTop 35%
Rhode Island: #1,879 of 6,211 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
William H. Racca has been granted 3 US patents while listed as an inventor at Quantum Electronics. The first was granted in 1986 and the most recent in February 2000. William H. Racca ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list William H. Racca in Barrington, RI, US.

Patents per Year

Patents granted per year, 1986 to 2000Bar chart with a peak of 1 patents in 1986.peak 11986: 1 patents19861995: 1 patents19952000: 1 patents2000

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6024930 Ozone generator plate Edward F. Racca 2000-02-15
5474750 Resonant power supply circuit for ozone generators Edward F. Racca 1995-12-12
4574200 Thermistor temperature control circuit Michael A. Bolvin, Mel E. Bilezerian 1986-03-04