Friedbert Nees has been granted 6 US patents while listed as an inventor at Basf Se . The first was granted in 1985 and the most recent in May 1990. Friedbert Nees ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Friedbert Nees in Blankenloch, DE.
Patents per Year Patents granted per year, 1985 to 1990 Bar chart with a peak of 2 patents in 1985. peak 2 1985: 2 patents 1985 1986: 1 patents 1986 1987: 2 patents 1987 1990: 1 patents 1990
Issued Patents All Time
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Showing 1–6 of 6 patents
Patent # Title Co-Inventors Date
4925823 Process and catalyst for the preparation of methacrylic acid Richard Krabetz , Gerd Duembgen , Franz Merger , Gerd Fouquet 1990-05-15
4667044 Process for the production of aromatic glycidyl esters Peter Werle , Gunther Reissmann , Wolfgang Merk 1987-05-19
4638085 Preparation of methyl methacrylate from methacrolein Franz J. Broecker , Gerd Duembgen , Gerd Fouquet , Richard Krabetz , Franz Merger 1987-01-20
4595778 Preparation of methacrylic acid and catalyst therefor Gerd Duembgen , Gerd Fouquet , Richard Krabetz , Franz Merger 1986-06-17
4520125 Catalyst for the preparation of methyl methacrylate Karl Baer , Peter Bassler , Gerd Duembgen , Gerd Fouquet , Richard Krabetz +1 more 1985-05-28
4496770 Process for the preparation of .alpha.-alkylacroleins Gerd Duembgen , Gerd Fouquet , Richard Krabetz , Ekhart Lucas , Franz Merger 1985-01-29
