David K. Johnson
18Patents
10h-index
7Co-inventors
61Inventor score
Filing activity: Sep 24, 1987 → Sep 4, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5057302A | Bifunctional chelating agents | Chemistry; Metallurgy | 91 | Expired |
| US5270378A | Acrylic surfactants and compositions containing those surfactants | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5130118A | Methods and materials for the preparation of metal labelled antibody solutions | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5227474A | Bifunctional chelating agents | Chemistry; Metallurgy | 16 | Expired |
| US5217704A | Methods and materials for the preparation of metal labelled antibody solutions | Human Necessities | 15 | Expired |
| US5670645A | Metal ion-ligand coordination complexes, antibodies directed thereto, and assays using such antibodies | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5021567A | 8-hydroxyquinoline chelating agents | Human Necessities | 13 | Expired |
| US5683907A | Metal ion-ligand coordination complexes, antibodies directed thereto, and assays using such antibodies | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5670627A | Metal ion-ligand coordination complexes, antibodies directed thereto, and assays using such antibodies | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5654160A | Metal ion-ligand coordination complexes, antibodies directed thereto, and assays using such antibodies | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5476939A | Certain pyridyl and isoquinolyl carbinolamine derivatives | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5631172A | Metal ion-ligand coordination complexes, antibodies directed thereto, and assays using such antibodies | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5663301A | Metal ion-ligand coordination complexes, antibodies directed thereto, and assays using such antibodies | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5902831A | Prevention of atherosclerosis using NADPH oxidase inhibitors | Human Necessities | 7 | Expired |
| US5245026A | Metal containing 8-hydroxyquinoline chelating agents | Human Necessities | 4 | Expired |
| US6190923A | "Diethylenetriamine-N,N',N""-triacetic acid derivatives" | Physics | 4 | Expired |
| US5230876A | Removal of vanadium from phosphoric acid | Chemistry; Metallurgy | 1 | Expired |
| US5681960A | Metal ion-ligand coordination complexes, antibodies directed thereto, and assays using such antibodies | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.