Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David Kaczan — 2 Patents

Basf Se: 2 patents #5,851 of 13,826Top 45%
Southgate, MI: #56 of 166 inventorsTop 35%
Michigan: #35,377 of 86,293 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
David Kaczan has been granted 2 US patents while listed as an inventor at Basf Se. The first was granted in 2011 and the most recent in November 2012. David Kaczan ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list David Kaczan in Southgate, MI, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
8308975 Polyol formed from an epoxidized oil Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, Theodore M. Smiecinski 2012-11-13
8084631 Polyol formed from an EPOXIDIZED oil Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, Theodore M. Smiecinski 2011-12-27