Drey Johnson
4Patents
1h-index
4Co-inventors
27Inventor score
Filing activity: Nov 6, 1990 → Nov 6, 1990
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5150849A | Cassette loader with improved leader tape extraction and method | Physics | 2 | Expired |
| US5181669A | Cassette loader with simultaneous leader tape equalization and loading | Physics | 1 | Expired |
| US5181667A | Cassette loader with precision cassette extraction and winding reference positioning means and method | Physics | 1 | Expired |
| US5150847A | Cassette loader with leader tape extraction and transfer, and method | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.