David E. Helgerson
7Patents
5h-index
8Co-inventors
56Inventor score
Filing activity: Sep 26, 1994 → May 3, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6959804B2 | Conveyor assembly | Performing Operations; Transporting | 27 | Expired |
| US5558206A | Conveyor technology | Performing Operations; Transporting | 15 | Expired |
| US7175018B2 | Conveyor assembly | Performing Operations; Transporting | 13 | Expired |
| US5558205A | Conveyors | Performing Operations; Transporting | 13 | Expired |
| US7748520B1 | Slip roller conveyor | Performing Operations; Transporting | 8 | Active |
| US7503450B2 | Long roller slip conveyor | Performing Operations; Transporting | 4 | Active |
| US12384635B2 | Adjustable tray stacker/destacker assembly | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.