David M. Kopena

OF Owens-Corning Fiberglas: 2 patents #148 of 488Top 35%

📍 Grand Rapids, OH: #11 of 26 inventorsTop 45%

🗺 Ohio: #30,338 of 73,341 inventorsTop 45%

Overall (All Time): #2,357,944 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4447249	Blowing wool separator method and apparatus	—	1984-05-08
4341003	Method and apparatus for separating rolls of web material	—	1982-07-27