DG

David L. Gefvert

SC Sherex Chemical Co.: 3 patents #8 of 46Top 20%
EG Evonik Degussa Gmbh: 1 patents #940 of 1,853Top 55%
GC Goldschmidt Chemical: 1 patents #8 of 21Top 40%
🗺 Ohio: #15,837 of 73,341 inventorsTop 25%
Overall (All Time): #1,028,246 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
7572761 Process for cleaning and softening fabrics 2009-08-11
6737392 MDEA ester quats with high content of monoester in blends with tea ester quats Robert O. Keys, Christopher J. Toney 2004-05-18
5284633 Solvent extraction of precious metals with hydroxyquinoline and stripping with acidified thiourea 1994-02-08
5256187 Separation of precious metals by an ion exchange process 1993-10-26
4855114 Dioxime kinetic enhancer for solvent extraction of gallium from basic aqueous solutions thereof 1989-08-08