Steven P. Johnson
10Patents
4h-index
6Co-inventors
53Inventor score
Filing activity: Dec 10, 1987 → May 3, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4849993A | Clock holdover circuit | Electricity | 35 | Expired |
| US4849112A | Adsorption separation of sterols from tall oil pitch with carbon adsorbent | Performing Operations; Transporting | 7 | Expired |
| US4933955A | Timing generator | Electricity | 6 | Expired |
| USD566061S1 | Magnetic holder for a tool | General | 6 | Expired |
| USD564983S1 | Magnetic holder for a tool | General | 4 | Expired |
| US4977243A | Separation of sterols from low-acid feeds with magnesium silicate and methyl-tert-butyl ether desorbent | Chemistry; Metallurgy | 4 | Expired |
| USD564981S1 | Magnetic holder for a tool | General | 4 | Expired |
| USD564982S1 | Pair of magnetic holders for a tool | General | 3 | Expired |
| US4962273A | Purification of alpha naphthol-containing feedstock by adsorption | Chemistry; Metallurgy | 1 | Expired |
| US12134045B1 | Adjustable toy figure | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.