PH

Peter F. Heid

ST Stepan: 1 patents #127 of 221Top 60%
Overall (All Time): #3,853,447 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5124475 Preparation of p-phenyl sulfonate esters of acyl glycolic acids Marshall J. Nepras, Matthew I. Levinson, Randal J. Bernhardt, James A. Hartlage 1992-06-23