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USPTO Patent Rankings Data through Dec 31, 2025
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Robert B. Schlenk — 3 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Louisville, KY: #939 of 3,201 inventorsTop 30%
Kentucky: #3,399 of 11,577 inventorsTop 30%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Robert B. Schlenk has been granted 3 US patents while listed as an inventor at Unknown. The first was granted in 1991 and the most recent in October 1996. Robert B. Schlenk ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Robert B. Schlenk in Louisville, KY, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5565116 Stud welding David D. Barton 1996-10-15
5309343 Driver circuit having paralleled transistors and current-variable resistive elements 1994-05-03
5072159 Lamp driver circuit 1991-12-10