DK

David B. Knowles

PO Ppg Industries Ohio: 1 patents #43 of 157Top 30%
📍 Vandergrift, PA: #5 of 21 inventorsTop 25%
🗺 Pennsylvania: #1,500 of 5,512 inventorsTop 30%
Overall (2002): #234,437 of 266,432Top 90%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6348604 Photochromic naphthopyrans Clara M. Nelson, Anu Chopra, Barry Van Gemert, Anil Kumar 2002-02-19