JF

J. William Freytag

EA E.I. Du Pont De Nemours And: 3 patents #2,229 of 8,010Top 30%
📍 Wilmington, DE: #1,229 of 3,182 inventorsTop 40%
🗺 Delaware: #2,574 of 7,163 inventorsTop 40%
Overall (All Time): #1,675,486 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4657853 Immunoassays utilizing covalent conjugates of polymerized enzyme and antibody Eiji Ishikawa 1987-04-14
4517303 Specific binding assays utilizing analyte-cytolysin conjugates William J. Litchfield 1985-05-14
4434236 Immunoassay wherein labeled antibody is displaced from immobilized analyte-analogue 1984-02-28