David Randolph
20Patents
9h-index
10Co-inventors
64Inventor score
Filing activity: Dec 18, 2007 → Aug 14, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD626390S1 | Shovel head | General | 20 | Expired |
| USD617615S1 | Shovel workhead | General | 18 | Expired |
| USD623488S1 | Drain spade | General | 15 | Expired |
| USD604572S1 | Excavator spade | General | 15 | Expired |
| USD628452S1 | Shovel head | General | 14 | Expired |
| USD634996S1 | Shovel blade | General | 12 | Expired |
| USD626389S1 | Shovel head | General | 12 | Expired |
| USD617616S1 | Square point shovel | General | 11 | Expired |
| USD648994S1 | Shovel head | General | 10 | Expired |
| USD699528S1 | Spade blade | General | 8 | Active |
| USD712219S1 | Round point blade | General | 8 | Active |
| USD699529S1 | Drain spade | General | 7 | Active |
| USD588883S1 | Embossed socket for garden tool | General | 7 | Expired |
| USD673823S1 | Garden spade | General | 6 | Active |
| USD611318S1 | Checkered socket for a garden tool | General | 6 | Expired |
| US7850216B2 | Garden tool head with coated leading edge | Human Necessities | 4 | Active |
| USD760563S1 | Round point blade | General | 4 | Active |
| USD593822S1 | Embossed socket for garden tool | General | 3 | Expired |
| USD699527S1 | Square point blade | General | 2 | Active |
| US9566703B2 | Hand tool with handle apparatus and associated method | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.