GM

George Magnus

ST Stepan: 9 patents #24 of 221Top 15%
SC Stepan Chemical: 1 patents #6 of 13Top 50%
Overall (All Time): #471,805 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6569352 Phthalic anhydride based polyester-ether polyols and urethane prepolymers produced therefrom Douglas Hillshafer 2003-05-27
5627221 Process for production of low density water-blown rigid foams with flow and dimensional stability Donald W. Schumacher, Joanne M. Moster 1997-05-06
5420169 Process for production of low density water-blown rigid foams with flow and dimensional stability Donald W. Schumacher, Joanne M. Moster 1995-05-30
4943649 Polyols, use and method of preparation Brian D. Kelley 1990-07-24
4722803 Self-compatibilizing polyester polyol blends based on dimethyl terephthalate residues Melvin L. Loeb, Robert J. Wood, Brian D. Kelley 1988-02-02
4644027 Self-compatibilizing phthalate-based polyester polyols Melvin L. Loeb, Robert J. Wood 1987-02-17
4644048 Self-compatibilizing phthalate-based polyester polyols Melvin L. Loeb, Robert J. Wood 1987-02-17
4615822 Compatibilized polyester polyol blend from phthalic anhydride bottoms 1986-10-07
4608432 Self-compatibilizing polyester polyol blends based on polyalkylene terephthalate Melvin L. Loeb, Robert J. Wood, Brian D. Kelley 1986-08-26
4526908 Polyol blends of phthalate/trimellitate esters for polyurethane-polyisocyanurate foams Norman Alfred Smith, Bonnie Keyes 1985-07-02
4521611 Polyester polyol blend from phthalic anhydride bottoms 1985-06-04