Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Fred Windt — 2 Patents

SCSchering: 2 patents #1,083 of 2,442Top 45%
Berlin, DE: #3,253 of 9,690 inventorsTop 35%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Fred Windt has been granted 2 US patents while listed as an inventor at Schering. The first was granted in 1989 and the most recent in December 1991. Fred Windt ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Fred Windt in Berlin, DE.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5071657 Device for transdermal administration of active medicinal agents Horst Oloff, Johannes Tack, Ingfried Zimmermann 1991-12-10
4822616 Vaginal ring Ingfried Zimmermann, Hans-Jurgen Reck 1989-04-18