DH

David J. Hatgas

AS Ashland: 2 patents #67 of 247Top 30%
AO Ashland Oil: 1 patents #154 of 284Top 55%
📍 Carmel, IN: #585 of 1,387 inventorsTop 45%
🗺 Indiana: #10,625 of 33,936 inventorsTop 35%
Overall (All Time): #1,588,814 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
RE39764 Composite roof structures prepared using one-part moisture curing polyurethane foaming adhesive compositions containing a reversibly blocked catalyst Roger L. Streets, Terri S. Townsend, Carrie D. Margot 2007-08-14
6305143 Composite roof structures prepared using one-part moisture curing polyurethane foaming adhesive compositions containing a reversibly blocked catalyst Roger L. Streets, Terri S. Townsend, Carrie D. Margot 2001-10-23
D333955 Tip for a dispenser of caulking, adhesive or sealant David N. Peresie, Thomas P. Semans, Roger L. Streets 1993-03-16