Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Randolf Köhn — 4 Patents

Basf Se: 3 patents #4,656 of 13,826Top 35%
BGBasell Polyolefine Gmbh: 1 patents #272 of 517Top 55%
Bath, GB: #59 of 321 inventorsTop 20%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Randolf Köhn has been granted 4 US patents while listed as an inventor at Basf Se. The first was granted in 2004 and the most recent in July 2006. Randolf Köhn ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Randolf Köhn in Bath, GB.

Patents per Year

Patents granted per year, 2004 to 2006Bar chart with a peak of 2 patents in 2005.peak 22004: 1 patents20042005: 2 patents20052006: 1 patents2006

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7081557 Method for the oligomerization of olefins using a cycloalkylalkyl-substituted triazacyclohexane Shahram Mihan, Ferenc Molnar, Heiko Maas, Martina Egen 2006-07-25 $41,968,000
6887958 Method for polymerizing olefins Shahram Mihan, Guido Seifert 2005-05-03 $266,000
6844290 Oligomerization catalyst Heiko Maas, Shahram Mihan, Guido Seifert, Jurgen Tropsch 2005-01-18 $455,000
6803431 Method for the polymerization of olefins Shahram Mihan, Dieter Lilge, Gunther Schweier, Guido Seifert 2004-10-12 $267,000