Michael Johnson
6Patents
3h-index
12Co-inventors
50Inventor score
Filing activity: Mar 31, 1992 → Jan 16, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5219746A | Ice-mediated introduction of substances into biological material | Chemistry; Metallurgy | 77 | Expired |
| USD627070S1 | Cart for a dental instrument delivery unit | General | 9 | Expired |
| USD605772S1 | Dental instrument delivery unit | General | 4 | Expired |
| US8317800B2 | Injectable material delivery device with an integrated mixer | Performing Operations; Transporting | 1 | Active |
| US8296996B2 | Water and nutrient delivery device | Human Necessities | 1 | Active |
| US8840592B2 | Piston for material delivery system | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.