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

David Carroll — 7 Patents

Cisco: 5 patents #2,819 of 13,007Top 25%
Apex, NC: #323 of 1,394 inventorsTop 25%
North Carolina: #7,540 of 45,564 inventorsTop 20%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
David Carroll has been granted 7 US patents while listed as an inventor at Cisco. The first was granted in 2001 and the most recent in July 2020. David Carroll ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list David Carroll in Apex, NC, US.

Patents per Year

Patents granted per year, 2001 to 2020Bar chart with a peak of 2 patents in 2003.peak 22001: 1 patents20012003: 2 patents20032004: 2 patents20042017: 1 patents20172020: 1 patents2020

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10724306 Drilling rig system having improved electrical subsystem Norman S. Myers 2020-07-28
9644431 Drilling rig system having improved electrical subsystem Norman S. Myers 2017-05-09
6704318 Switched token ring over ISL (TR-ISL) network Carson Stuart, Jeffrey Kidd, Kara J. Adams, Kenneth H. Potter, Jr., Wayne Garavaglia 2004-03-09 $78,521,000
6674727 Distributed ring protocol and database John Fitzgerald, Kara J. Adams, Kenneth H. Potter, Jr., Gary William Kramling 2004-01-06 $95,382,000
6657951 Backup CRF VLAN John Fitzgerald, Kara J. Adams, Kenneth H. Potter, Jr., Gary William Kramling 2003-12-02 $69,230,000
6563832 Token ring bridge distributed in a switched fabric Carson Stuart, Kevin R. Lingle, Claude A. Cartee, Eric Decker, Jeffrey Kidd +3 more 2003-05-13 $186,864,000
6304575 Token ring spanning tree protocol Kara J. Adams, Kenneth H. Potter, Jr., Praveen Jain 2001-10-16 $438,197,000