DF

Dawn FRIESEN

ST Stepan: 1 patents #127 of 221Top 60%
Overall (All Time): #1,838,143 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11274242 Friction reducer for hydraulic fracturing Brian Seymour-Loya, Aaron W. Sanders, Gregory P. Dado 2022-03-15
10035947 Method for chemically controlling delay time for breaking polymers Ayodele Okunola, Sally LAWRENCE 2018-07-31