Partial year: Data through Q3 2025 (Sept 30). Full-year totals not yet available.
DL

Dennis Mark Lettkeman

UG United States Gypsum: 1 patents #3 of 15Top 20%
📍 Broken Arrow, OK: #11 of 36 inventorsTop 35%
🗺 Oklahoma: #202 of 722 inventorsTop 30%
Overall (2025): #405,936 of 469,880Top 90%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12291485 Gypsum cement compositions with aggregate stabilizers and methods for forming floor underlayment Karl Glenn Niessner, John W. Wilson, William Kelly Bedwell 2025-05-06