Chadwick A. Shaffer
49Patents
17h-index
31Co-inventors
81Inventor score
Filing activity: Mar 10, 1998 → Jul 1, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6158082A | Portable blower with blower tube noise reduction | Human Necessities | 52 | Expired |
| US6442790B1 | Portable blower/vacuum having air inlet cover attachable to blower tube | Fixed Constructions | 39 | Expired |
| USD461604S1 | Housing for a blower/vacuum | General | 36 | Expired |
| USD556395S1 | Housing for a convertible blower/vacuum | General | 35 | Expired |
| US7735188B2 | Air inlet cover and portable blower/vacuum incorporating same | Fixed Constructions | 34 | Active |
| US7257909B2 | Convertible yard tool | Fixed Constructions | 31 | Expired |
| US5979013A | Portable blower with noise reduction | Human Necessities | 30 | Expired |
| US6003199A | Air concentrator nozzle for portable blower | Human Necessities | 30 | Expired |
| US6059541A | Air inlet cover for portable blower/vacuum | Human Necessities | 29 | Expired |
| US7314096B2 | Adjustable handle for portable tool | Performing Operations; Transporting | 25 | Expired |
| USD642596S1 | Snowthrower power head | General | 23 | Expired |
| US10123478B2 | Walk power mower with biased handle | Human Necessities | 21 | Active |
| USD675232S1 | Snowthrower power head | General | 19 | Active |
| USD483236S1 | Filament trimmer | General | 19 | Expired |
| USD747050S1 | Housing of a portable blower/vacuum | General | 18 | Active |
| USD820722S1 | Plant pot | General | 18 | Active |
| US6324720A | Portable blower tube noise reduction | Human Necessities | 17 | Expired |
| USD642595S1 | Snowthrower handle | General | 17 | Expired |
| USD676876S1 | Handle for a ground-working implement | General | 16 | Active |
| USD566491S1 | Vegetation trimmer | General | 14 | Expired |
| USD524824S1 | Convertible yard tool | General | 13 | Expired |
| US6742263B2 | Filament trimmer with adjustable cutoff blade | Human Necessities | 13 | Expired |
| US6973728B2 | Filament trimmer with dual triggers | Human Necessities | 13 | Expired |
| US10111381B2 | Walk power mower with transmission providing both forward and reverse propulsion | Human Necessities | 13 | Active |
| USD519127S1 | Housing for convertible yard tool | General | 13 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.