Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Charles D. Helfenberger — 3 Patents

Charlotte, NC: #1,347 of 4,868 inventorsTop 30%
North Carolina: #14,708 of 45,564 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Charles D. Helfenberger has been granted 3 US patents. The first was granted in 2016 and the most recent in April 2017. Charles D. Helfenberger ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Charles D. Helfenberger in Charlotte, NC, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9633212 Intelligent key selection and generation Todd W. Arnold, Elizabeth A. Dames, Richard V. Kisley, Jimmie R. Mayfield, Jr. 2017-04-25 $1,937,000
9607159 Intelligent key selection and generation Todd W. Arnold, Elizabeth A. Dames, Richard V. Kisley, Jimmie R. Mayfield, Jr. 2017-03-28 $2,520,000
9471796 Intelligent key selection and generation Todd W. Arnold, Elizabeth A. Dames, Richard V. Kisley, Jimmie R. Mayfield, Jr. 2016-10-18 $1,445,000