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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
DH

David Henke — 3 Patents

RIRtc Industries: 3 patents #26 of 49Top 55%
Hawthorn Woods, IL: #56 of 142 inventorsTop 40%
Illinois: #26,899 of 84,256 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
David Henke has been granted 3 US patents while listed as an inventor at Rtc Industries. The first was granted in 1999 and the most recent in November 2009. David Henke ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list David Henke in Hawthorn Woods, IL, US.

Patents per Year

Patents granted per year, 1999 to 2009Bar chart with a peak of 1 patents in 1999.peak 11999: 1 patents19992008: 1 patents20082009: 1 patents2009

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7621409 Product securement and management system Stephen N. Hardy, Adam Gold, John Ward, Max Syvuk, John Swafford 2009-11-24
7451881 Product securement and management system Stephen N. Hardy, Adam Gold, John Ward, Max Syvuk, John Swafford 2008-11-18
5924367 Shelf sign system Kent Bach, Max Syvuk 1999-07-20