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USPTO Patent Rankings Data through Dec 31, 2025
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C. Mark Leaphart — 7 Patents

UNUnknown: 8 patents #1,262 of 83,584Top 2%
Columbia, SC: #119 of 1,151 inventorsTop 15%
South Carolina: #2,197 of 15,501 inventorsTop 15%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
C. Mark Leaphart has been granted 7 US patents while listed as an inventor at Unknown. The first was granted in 1987 and the most recent in March 2008. C. Mark Leaphart ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list C. Mark Leaphart in Columbia, SC, US.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
7340783 Compressed air drain opening device J. Leaphart, Carlos R. Schoolcraft, Michael Ernst 2008-03-11
7328793 Plunger storage unit J. Leaphart, William L. Noack, Eugene Schneider 2008-02-12
D535073 Plunger bell J. Leaphart 2007-01-09
6862753 Compressed air drain opening device J. Leaphart 2005-03-08
6789276 Compressed air drain opening device J. Leaphart 2004-09-14
6484326 Compressed air drain opening device J. Leaphart 2002-11-26
4714353 Laundering bag for paired items 1987-12-22