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USPTO Patent Rankings Data through Dec 31, 2025
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Ralf Steinstrasser — 2 Patents

Merck: 2 patents #3,930 of 9,382Top 45%
Roßdorf, DE: #49 of 121 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Ralf Steinstrasser has been granted 2 US patents while listed as an inventor at Merck. The first was granted in 1993 and the most recent in September 1999. Ralf Steinstrasser ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Ralf Steinstrasser in Roßdorf, DE.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5958471 Spray dried polyol composition and method of making Eugen Schwarz, Gernot Moschl, Heinrich Nikolaus 1999-09-28 $109,743,000
5238663 Nickel recovery process Werner Vikari, Heinrich Nikolaus, Gunther Feldmann-Schlohbohm, Klaus Behne 1993-08-24 $32,969,000