DB

Donald A. Bielski

KD Koppers Delaware: 2 patents #10 of 26Top 40%
📍 Youngstown, OH: #90 of 284 inventorsTop 35%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #1,873,252 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10961665 Rail joint assembly having forged rail joint bars Steven D. Singleton, William T. Urmson, Jr., John W. Mospan, Ronald K. Junk 2021-03-30
D885977 Anti-rail rollover device Steven D. Singleton, Ronald K. Junk, John W. Mospan 2020-06-02