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USPTO Patent Rankings Data through Sept 30, 2025
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Partial year: Data through Q3 2025 (Sept 30). Full-year totals not yet available.
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Allen J. Massman

Calmar, IA: #1 of 1 inventorsTop 100%
Iowa: #375 of 1,331 inventorsTop 30%
Overall (2025): #468,200 of 469,880Top 100%
1 Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12326184 Captive clutch for vehicle transmission Chase H. Langreck, James W. Weissenfluh 2025-06-10

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