AH

Allen C. Howard

PP Phillips Petroleum: 1 patents #819 of 1,401Top 60%
📍 Bridge City, TX: #84 of 155 inventorsTop 55%
🗺 Texas: #73,555 of 125,132 inventorsTop 60%
Overall (All Time): #4,076,396 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4351817 Carbon black process John E. Slagel 1982-09-28