RM

Roger Marquart

US Usx: 2 patents #15 of 116Top 15%
Overall (All Time): #2,242,820 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6130637 Measuring the thickness of hot slag in steelmaking Gregory A. Meszaros, David J. Walker, John G. Estocin, Frank L. Kemeny 2000-10-10
5228902 Method of desulfurization in vacuum processing of steel Robert S. Bogan, Brad Hjerpe, James D. Reisinger 1993-07-20