Steven E. Callahan
8Patents
6h-index
12Co-inventors
60Inventor score
Filing activity: Oct 18, 1993 → May 17, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5464091A | Protective covers | Physics | 38 | Expired |
| US5632374A | Compact disc transfer station | Physics | 19 | Expired |
| US5775663A | Copy Stand | Human Necessities | 19 | Expired |
| US5509731A | Ejecting storage case | Physics | 14 | Expired |
| USD388605S | Card case | General | 12 | Expired |
| US5415298A | Recorded medium storage case | Physics | 7 | Expired |
| USD766734S1 | Flexible pouch with internal structure | General | 5 | Active |
| US5921521A | Copy stand | Human Necessities | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.