Paul D. Stephens
104Patents
26h-index
89Co-inventors
93Inventor score
Filing activity: Dec 13, 1988 → Nov 3, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6712868B2 | Bagless canister vacuum cleaner | Emerging Cross-Sectional Technologies | 139 | Expired |
| US6260234A | Upright vacuum cleaner with cyclonic airflow | Emerging Cross-Sectional Technologies | 139 | Expired |
| US6848146B2 | Upright vacuum cleaner with cyclonic airflow | Emerging Cross-Sectional Technologies | 133 | Expired |
| US6003196A | Upright vacuum cleaner with cyclonic airflow | Emerging Cross-Sectional Technologies | 112 | Expired |
| US6463622B2 | Upright vacuum cleaner with cyclonic airflow | Emerging Cross-Sectional Technologies | 103 | Expired |
| US6341404B1 | Upright vacuum cleaner with cyclonic airflow pathway | Emerging Cross-Sectional Technologies | 101 | Expired |
| US5347679A | Stick type vacuum cleaner | Human Necessities | 100 | Expired |
| USD401021S | Hand held vacuum cleaner | General | 85 | Expired |
| US6026540A | Upright vacuum cleaner with cyclonic airflow | Emerging Cross-Sectional Technologies | 82 | Expired |
| US7131165B2 | Upright vacuum cleaner with cyclonic airflow | Emerging Cross-Sectional Technologies | 78 | Expired |
| US7146681B2 | Upright vacuum cleaner with cyclonic airflow | Emerging Cross-Sectional Technologies | 77 | Expired |
| US5404614A | Latch assembly for blower of wet/dry vacuum cleaner | Emerging Cross-Sectional Technologies | 62 | Expired |
| USD359604S | Vacuum cleaner | General | 54 | Expired |
| USD373862S | Combined wet/dry vacuum cleaner with a detachable blower | General | 52 | Expired |
| US6436160B1 | Dirt cup assembly for vacuum cleaner | Emerging Cross-Sectional Technologies | 51 | Expired |
| USD346052S | Vacuum cleaner | General | 47 | Expired |
| USD384448S | Wet/dry vacuum cleaner | General | 40 | Expired |
| US5247720A | Valving structure for air passageways of floor nozzle and auxiliary inlet of a vacuum cleaner | Human Necessities | 40 | Expired |
| US5535500A | Method for manufacturing a bucket for a wet/dry vacuum cleaner | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5561885A | Portable hand-held vacuum cleaner | Human Necessities | 36 | Expired |
| USD418265S | Upright vacuum cleaner | General | 35 | Expired |
| US6532621B2 | Vacuum cleaner with noise suppression features | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5869947A | Rechargeable hand held vacuum cleaner with electrical connections circuit board with spring contacts | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6745432B2 | Upright vacuum cleaner with cyclonic airflow | Emerging Cross-Sectional Technologies | 31 | Expired |
| US5269042A | Height adjustment system for vacuum cleaner | Human Necessities | 28 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.