Frank Hoffman
7Patents
4h-index
5Co-inventors
50Inventor score
Filing activity: Oct 3, 1986 → Jun 6, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6281888A | Pen input device using electrostatic coupling | Physics | 43 | Expired |
| US4927126A | Precision vise | Performing Operations; Transporting | 15 | Expired |
| US5156533A | Replaceable plastic trolley wheel and method | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US6244312A | Processing means for barking machines | Performing Operations; Transporting | 4 | Expired |
| US7567664B2 | Method and apparatus for providing accessibility features for a telephone | Electricity | 2 | Active |
| US8921974B2 | Semiconductor manufacturing and semiconductor device with semiconductor structure | Performing Operations; Transporting | 2 | Active |
| US8272244B2 | Stamping apparatus with feed device | Performing Operations; Transporting | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.