John S. O'Callaghan
12Patents
7h-index
27Co-inventors
62Inventor score
Filing activity: Apr 28, 1989 → Mar 1, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5829742A | In-feed magazine apparatus and method for loading documents | Performing Operations; Transporting | 43 | Expired |
| US6311892A | Automatic system for verifying articles containing indicia thereon | Physics | 38 | Expired |
| US5783032A | Linerless label applicator | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6575358B2 | Automatic verification equipment | Physics | 31 | Expired |
| US5503388A | Buffered stacker | Performing Operations; Transporting | 17 | Expired |
| US5538140A | Buffered stacker with drop floor assembly | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5934666A | In-feed magazine apparatus and method for loading documents | Performing Operations; Transporting | 12 | Expired |
| US5182991A | Multi-position incremental document endorser | Performing Operations; Transporting | 7 | Expired |
| US6964367B2 | Automatic system for verifying articles containing indicia thereon | Physics | 5 | Expired |
| US4960273A | Dual mode document feeder | Physics | 4 | Expired |
| US4984008A | Film number writing system | Physics | 3 | Expired |
| US6949710B2 | Mail weighing system and scale apparatus | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.