DR

Debra A. Ryan

HC Hoechst Celanese: 2 patents #13 of 155Top 9%
📍 Port Aransas, TX: #2 of 46 inventorsTop 5%
🗺 Texas: #541 of 5,943 inventorsTop 10%
Overall (1997): #42,291 of 185,788Top 25%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5648535 Process for preparing acyl aminophenols James A. Foster, Werner H. Mueller, Hartmut Wiezer 1997-07-15
5616807 Process for preparing alkyl anilines James A. Foster, Werner H. Mueller 1997-04-01