DM

David McDonald

UG United States Gypsum: 2 patents #5 of 75Top 7%
📍 Glenview, IL: #17 of 79 inventorsTop 25%
🗺 Illinois: #967 of 6,921 inventorsTop 15%
Overall (2011): #105,026 of 364,097Top 30%
2
Patents 2011

Issued Patents 2011

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7908810 Corrugated steel deck system including acoustic features Stephen W. Payne, Jr., Kurt Goodfriend, Dennis Albert Socha, John Ellicson, Francis Harold Laux +2 more 2011-03-22
7861955 Wet-grinding gypsum with polycarboxylates Sharon L. Tracy, Qingxia Liu 2011-01-04