Robert S. Volk
8Patents
7h-index
7Co-inventors
48Inventor score
Filing activity: Dec 13, 1993 → Apr 27, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6505984B2 | Crayon with eraser | Performing Operations; Transporting | 40 | Expired |
| US5388689A | Writing surfaces and container for supplies | Performing Operations; Transporting | 29 | Expired |
| US6565275B2 | Marker with eraser | Performing Operations; Transporting | 23 | Expired |
| USD356822S | Stencil holder | General | 16 | Expired |
| US5533900A | Stencil holder and kit and method of making an image | Performing Operations; Transporting | 15 | Expired |
| USD356334S | Writing surfaces and container for supplies | General | 11 | Expired |
| USD360649S | Writing surface and enclosure for supplies | General | 10 | Expired |
| USD360894S | Writing surface and enclosure for supplies | General | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.