IC

I. Ching Chiu

PP Pennzoil Products: 1 patents #1 of 11Top 10%
📍 Houston, TX: #210 of 924 inventorsTop 25%
🗺 Texas: #885 of 4,134 inventorsTop 25%
Overall (1989): #102,753 of 140,708Top 75%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4863622 Phosphorus-free antiwear/antifriction additives — 1989-09-05