PS

Paul D. Smith

PP Phillips Petroleum: 1 patents #54 of 170Top 35%
📍 Monbiel, OK: #1 of 1 inventorsTop 100%
Overall (1989): #70,452 of 140,708Top 55%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4806513 Silicon and fluorine-treated alumina containing a chromium catalyst and method of producing same Max P. McDaniel, Donald D. Norwood 1989-02-21