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USPTO Patent Rankings Data through Dec 31, 2025
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Roy E. Downham — 2 Patents

ASAdvanced Systems: 2 patents #8 of 26Top 35%
Green Bay, WI: #254 of 718 inventorsTop 40%
Wisconsin: #17,225 of 40,088 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Roy E. Downham has been granted 2 US patents while listed as an inventor at Advanced Systems. The first was granted in 1988 and the most recent in May 1989. Roy E. Downham ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Roy E. Downham in Green Bay, WI, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4833794 Dryer apparatus for floating a running web and having baffle means for spent return air Paul H. Stibbe, Robert A. Daane 1989-05-30
4785986 Paper web handling apparatus having improved air bar with dimensional optimization Robert A. Daane 1988-11-22