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USPTO Patent Rankings Data through Dec 31, 2025
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Robert Maerkl — 9 Patents

Basf Se: 9 patents #1,877 of 13,826Top 15%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Robert Maerkl has been granted 9 US patents while listed as an inventor at Basf Se. The first was granted in 1988 and the most recent in January 1992. Robert Maerkl ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%).

Patents per Year

Patents granted per year, 1988 to 1992Bar chart with a peak of 4 patents in 1988.peak 41988: 4 patents19881989: 1 patents19891990: 3 patents19901992: 1 patents1992

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
5081313 Process for the preparation of 2,3-dialkoxypropanals Dieter Koeffer, Werner Bertleff 1992-01-14
4925972 Preparation of alkyl pentenoates Wolfgang Harder 1990-05-15
4910328 Preparation of omega-formylalkanecarboxylic esters Werner Bertleff, Michael Roeper 1990-03-20
4894474 Preparation of alkyl pentenoates Werner Bertleff, Hans J. Wilfinger, Gunter Schuch, Wolfgang Harder, Gebhard Kuehn +1 more 1990-01-16
4861895 Treatment of aqueous solutions obtained in the carbalkoxylation of olefinically unsaturated compounds Werner Bertleff, Peter Magnussen, Gebhard Kuehn, Peter Stops 1989-08-29
4777284 Continuous preparation of carbalkoxy-containing aliphatic compounds Werner Bertleff, Gebhard Kuehn, Paul Panitz, Peter Stops, Rudolf Kummer +1 more 1988-10-11
4755625 Preparation of 1,1,2-trialkoxyethanes Werner Bertleff, Rudolf Kummer 1988-07-05
4740525 Preparation of ethylene glycol Werner Bertleff, Wolfgang Harder, Rudolf Kummer 1988-04-26
4724241 Preparation of ethylene glycol Wolfgang Harder 1988-02-09