DH

Douglas Hillshafer

ST Stepan: 1 patents #4 of 13Top 35%
📍 Western Springs, IL: #5 of 8 inventorsTop 65%
🗺 Illinois: #1,799 of 6,351 inventorsTop 30%
Overall (2025): #402,169 of 469,880Top 90%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12291673 Polyester diverting agents for low-temperature oil wells Sarah Wolek 2025-05-06