Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Alfred Hackenberger — 4 Patents

Basf Se: 4 patents #3,853 of 13,826Top 30%
Ludwigshafen, DE: #665 of 1,722 inventorsTop 40%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Alfred Hackenberger has been granted 4 US patents while listed as an inventor at Basf Se. The first was granted in 1985 and the most recent in March 1991. Alfred Hackenberger ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Alfred Hackenberger in Ludwigshafen, DE.

Patents per Year

Patents granted per year, 1985 to 1991Bar chart with a peak of 1 patents in 1985.peak 11985: 1 patents19851987: 1 patents19871990: 1 patents19901991: 1 patents1991

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5003049 Dyes containing fluorotriazine and dichloropyridazone groups Udo Bergmann, Manfred Patsch 1991-03-26
4927935 3-cyanoquinoline derivatives Manfred Patsch 1990-05-22
4705869 Preparation of fatty acid esters of ascorbic acid Helmut Nickels 1987-11-10
4506089 Preparation of methyl m-nitrobenzoate Manfred Patsch, Manfred Gaeng 1985-03-19