JH

John L. Howell

US United States Steel: 4 patents #22 of 309Top 8%
EA E.I. Du Pont De Nemours And: 1 patents #4,343 of 8,010Top 55%
📍 Irwin, PA: #48 of 245 inventorsTop 20%
🗺 Pennsylvania: #15,920 of 74,527 inventorsTop 25%
Overall (All Time): #1,028,216 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
7569527 Fluoro derivative-substituted aryl pnictogens and their oxides Kevin Hay 2009-08-04
4686090 Desulfurizing of reducing gas stream using a recycle calcium oxide system Joseph E. McGreal, Edward J. Nemeth, Stephen Waslo, Jerome Feinman 1987-08-11
4522649 Method of furnace operation with high pellet burdens Melvin C. Chang 1985-06-11
4436552 Method of furnace operation with high pellet burdens Melvin C. Chang 1984-03-13
4212851 Regeneration of sulfided dolomite Edward J. Nemeth, Joseph E. McGreal 1980-07-15