DH

Douglas K. Hillshaffer

ST Stepan: 1 patents #1 of 11Top 10%
📍 Western Springs, IL: #2 of 5 inventorsTop 40%
🗺 Illinois: #1,298 of 5,218 inventorsTop 25%
Overall (2005): #64,842 of 245,428Top 30%
1
Patents 2005

Issued Patents 2005

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6855844 Phtalic anhydride based polyester-ether polyols and double metal cyanide catalyst system for preparing same Eric Geiger 2005-02-15