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USPTO Patent Rankings Data through Dec 31, 2025
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William C. Downing — 1 Patent

CACabot: 1 patents #336 of 601Top 60%
Aurora, IL: #590 of 1,049 inventorsTop 60%
Illinois: #49,230 of 84,256 inventorsTop 60%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
William C. Downing has been granted 1 US patent while listed as an inventor at Cabot. All of these patents were granted in 2000. William C. Downing ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list William C. Downing in Aurora, IL, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6117000 Polishing pad for a semiconductor substrate Sriram Anjur 2000-09-12 $21,373,000