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USPTO Patent Rankings Data through Dec 31, 2025
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Gerd Littmann — 2 Patents

Basf Se: 2 patents #5,851 of 13,826Top 45%
Weinheim, DE: #244 of 558 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Gerd Littmann has been granted 2 US patents while listed as an inventor at Basf Se. The first was granted in 2007 and the most recent in March 2009. Gerd Littmann ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Gerd Littmann in Weinheim, DE.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7497931 Distillative preparation of IPDA having a high cis/trans isomer ratio Frank Funke, Thomas Hill, Jobst Rüdiger von Watzdorf, Wolfgang Mattmann, Wolfgang Harder +2 more 2009-03-03
7256313 Method for the production of isophorondiamine (ipda, 3-aminomethyl-3,5,5-trimethyl- cyclohexylamine) having a high cis/tran-isomer ratio Frank Funke, Thomas Hill, Jobst Rüdiger von Watzdorf, Wolfgang Mattmann, Wolfgang Harder +2 more 2007-08-14 $1,109,000