Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DS

Derek W. Sproson

MIMiles: 2 patents #135 of 626Top 25%
Baltimore, MD: #1,687 of 4,923 inventorsTop 35%
Maryland: #13,387 of 35,612 inventorsTop 40%
Overall (All Time): #2,300,824 of 4,157,543Top 60%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5264287 Rare earth-containing frits having a high glass transition temperature and their use for the production of enamels having improved heat resistance Vernon J. Grebe, Elie E. Saad, Arthur C. Stidham 1993-11-23
5198393 Rare earth-containing frits having a high glass transition temperature and their use for the production of enamels having improved heat resistance Vernon J. Grebe, Elie E. Saad, Arthur C. Stidham 1993-03-30