JB

John F. Bortnik

EC Elkem Metals Company: 2 patents #9 of 34Top 30%
📍 Ashtabula, OH: #28 of 94 inventorsTop 30%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,329,531 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4816230 System for recycling fines to hollow electrode Donald A. Clayman, Scott A. Baker 1989-03-28
4491568 System for recycling fines to hollow electrode Donald A. Clayman, Scott A. Baker 1985-01-01