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

E. Keller Barnhardt — 4 Patents

CECem: 4 patents #15 of 51Top 30%
Charlotte, NC: #1,074 of 4,868 inventorsTop 25%
North Carolina: #12,022 of 45,564 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
E. Keller Barnhardt has been granted 4 US patents while listed as an inventor at Cem. The first was granted in 2008 and the most recent in February 2012. E. Keller Barnhardt ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list E. Keller Barnhardt in Charlotte, NC, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8114807 Synthesis and use of intermetallic iron palladium nanoparticle compositions Keith A. Porter 2012-02-14
7939785 Microwave-assisted chromatography preparation Michael J. Collins, Wyatt Price Hargett, Jr., James E. Thomas, Michael J. Collins 2011-05-10
7812291 Microwave-assisted chromatography preparation Michael J. Collins, Wyatt Price Hargett, Jr., James E. Thomas, Michael J. Collins 2010-10-12
7348526 Microwave-assisted chromatography preparation Michael J. Collins, Wyatt Price Hargett, Jr., James E. Thomas, Michael J. Collins 2008-03-25