James A. Oldfield
9Patents
2h-index
7Co-inventors
44Inventor score
Filing activity: Mar 24, 1993 → Sep 6, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5343266A | Film extraction unit | Physics | 3 | Expired |
| US10988292B2 | Tamper-evident closures | Performing Operations; Transporting | 3 | Active |
| US5361112A | Film length checking apparatus | Physics | 1 | Expired |
| US5535656A | Flexible guillotines | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5396307A | Guide apparatus | Performing Operations; Transporting | 1 | Expired |
| US5448326A | Photographic processing apparatus | Physics | 1 | Expired |
| US11907792B2 | Closure element having a transponder between an inner cap member and an outer cap member | Physics | 0 | Active |
| US12428202B2 | Recyclable closure | Performing Operations; Transporting | 0 | Active |
| US12091227B2 | Closure element | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.