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USPTO Patent Rankings Data through Dec 31, 2025
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Douglas E. LeDuc — 4 Patents

ATAT&T: 2 patents #7,295 of 18,772Top 40%
Intel: 2 patents #13,316 of 30,777Top 45%
Bolingbrook, IL: #148 of 491 inventorsTop 35%
Illinois: #21,640 of 84,256 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Douglas E. LeDuc has been granted 4 US patents while listed as an inventor at AT&T. The first was granted in 1994 and the most recent in June 2008. Douglas E. LeDuc ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Douglas E. LeDuc in Bolingbrook, IL, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7386764 System and method for fault detection and recovery John Lash, Nagendra Kolluru 2008-06-10 $23,380,000
7000154 System and method for fault detection and recovery John Lash, Nagendra Kolluru 2006-02-14 $11,997,000
6484202 Method and apparatus for determining the status of a transmission link David Frank Simak 2002-11-19 $21,412,000
5355404 Method of controlling parameter downloading from a communication switching system to customer stations Ravindranath Madhavan 1994-10-11