PS

Patrick Richard Spearman

PM Porous Media: 1 patents #2 of 3Top 70%
📍 The Woodlands, TX: #3 of 6 inventorsTop 50%
🗺 Texas: #1,330 of 5,527 inventorsTop 25%
Overall (1994): #83,750 of 165,921Top 55%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5284997 Two step filter and process Michael R. Spearman, Eric C. Stender 1994-02-08