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

Charles W. Markham — 6 Patents

PAPacesetter: 1 patents #587 of 832Top 75%
Clearwater, FL: #111 of 932 inventorsTop 15%
Florida: #9,271 of 67,251 inventorsTop 15%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Charles W. Markham has been granted 6 US patents while listed as an inventor at Pacesetter. The first was granted in 1985 and the most recent in March 2006. Charles W. Markham ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Charles W. Markham in Clearwater, FL, US.

Patents per Year

Patents granted per year, 1985 to 2006Bar chart with a peak of 2 patents in 1985.peak 21985: 2 patents19851987: 1 patents19871988: 1 patents19881990: 1 patents19902006: 1 patents2006

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7020525 Flexible electrical interconnect for an implantable medical device Dion F. Davis 2006-03-28 $17,982,000
4931059 Needle/stylet combination 1990-06-05
4774948 Marking and retraction needle having retrievable stylet 1988-10-04
4693257 Needle aspiration biopsy device with enclosed fluid supply 1987-09-15
4555243 Flexible and protective guide device for use with aspirating needles 1985-11-26
4549554 Aspiration biopsy device 1985-10-29