HH

Harold W. Helmke

📍 Kingwood, TX: #19 of 69 inventorsTop 30%
🗺 Texas: #2,440 of 8,590 inventorsTop 30%
Overall (2002): #210,831 of 266,432Top 80%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6489527 Process for improving purity of para-xylene product John Di-Yi Ou, Dana L. Pilliod 2002-12-03