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USPTO Patent Rankings Data through Dec 31, 2025
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Gerd-Peter Gehrmann — 3 Patents

VRVon Roll: 3 patents #4 of 48Top 9%
Gerlafingen, CH: #3 of 15 inventorsTop 20%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Gerd-Peter Gehrmann has been granted 3 US patents while listed as an inventor at Von Roll. The first was granted in 1982 and the most recent in July 1984. Gerd-Peter Gehrmann ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Gerd-Peter Gehrmann in Gerlafingen, CH.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4461705 Endless chain driven rack and pinion displacement device for filter presses 1984-07-24
4362616 Apparatus for moving the filter plates of a filter press Peter Spiegel 1982-12-07
4325396 Apparatus for cleaning a filter press 1982-04-20