David Dronsfield
8Patents
4h-index
3Co-inventors
50Inventor score
Filing activity: Jul 24, 1992 → Jun 15, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5327701A | Apparatus for inserting material into envelopes | Performing Operations; Transporting | 28 | Expired |
| US5487254A | Apparatus for inserting material into envelopes | Performing Operations; Transporting | 11 | Expired |
| US6915184B2 | Collator | Performing Operations; Transporting | 8 | Expired |
| US5406771A | Apparatus for inserting material into envelopes | Performing Operations; Transporting | 5 | Expired |
| US5904644A | Envelope closer | Performing Operations; Transporting | 3 | Expired |
| US5425533A | Apparatus for assembly of a plurality of items of insert material into stacks on a conveyor | Performing Operations; Transporting | 2 | Expired |
| US8453418B2 | Document inserting apparatus | Performing Operations; Transporting | 1 | Active |
| US11987470B2 | Sheet collating device | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.