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

David A. Dukes — 4 Patents

LILiebert: 3 patents #35 of 182Top 20%
Powell, OH: #131 of 479 inventorsTop 30%
Ohio: #19,019 of 73,341 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
David A. Dukes has been granted 4 US patents while listed as an inventor at Liebert. The first was granted in 1998 and the most recent in May 2013. David A. Dukes ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list David A. Dukes in Powell, OH, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8448594 Vehicle height restrictor and alerting device 2013-05-28
7886983 Condensation prevention system and methods of use Karl M. CRISS, Thomas Harvey 2011-02-15
7788940 Electronic equipment cabinet with integrated, high capacity, cooling system, and backup ventilation Steven Madara, Steve Sillato, Thomas Harvey 2010-09-07
5709100 Air conditioning for communications stations Daniel Baer, Frank DiPaolo, Stephen Sillato 1998-01-20