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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Allen Hefner — 3 Patents

CRCree: 3 patents #288 of 639Top 50%
Travilah, MD: #16 of 46 inventorsTop 35%
Maryland: #10,230 of 35,612 inventorsTop 30%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Allen Hefner has been granted 3 US patents while listed as an inventor at Cree. The first was granted in 2009 and the most recent in October 2013. Allen Hefner ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Allen Hefner in Travilah, MD, US.

Patents per Year

Patents granted per year, 2009 to 2013Bar chart with a peak of 1 patents in 2009.peak 12009: 1 patents20092011: 1 patents20112013: 1 patents2013

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8546874 Power switching semiconductor devices including rectifying junction-shunts Sei-Hyung Ryu, Anant Agarwal 2013-10-01 $33,603,000
8034688 Methods of forming power switching semiconductor devices including rectifying junction-shunts Sei-Hyung Ryu, Anant Agarwal 2011-10-11 $7,604,000
7598567 Power switching semiconductor devices including rectifying junction-shunts Sei-Hyung Ryu, Anant Agarwal 2009-10-06 $19,906,000