Roger W. Day

OL Olin: 10 patents #74 of 783Top 10%

GE Geosource: 5 patents #2 of 55Top 4%

LM Lubrizol Advanced Materials: 5 patents #28 of 282Top 10%

PT Praxair Technology: 4 patents #208 of 918Top 25%

📍 Solon, OH: #33 of 517 inventorsTop 7%

🗺 Ohio: #2,215 of 73,341 inventorsTop 4%

Overall (All Time): #152,646 of 4,157,543Top 4%

Patents All Time

Issued Patents All Time

Showing 26–26 of 26 patents

Patent #	Title	Co-Inventors	Date
4184771	Centrifugal mud mixer	—	1980-01-22