Charles C. Packham
15Patents
7h-index
17Co-inventors
63Inventor score
Filing activity: Dec 9, 1974 → Mar 8, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4797997A | Dry shavers | Performing Operations; Transporting | 32 | Expired |
| US4362174A | Toothbrushes | Human Necessities | 17 | Expired |
| US3933276A | Heating and dispensing apparatus | Performing Operations; Transporting | 14 | Expired |
| US4292737A | Dry shaver with differentially biased inner cutter and base members | Performing Operations; Transporting | 14 | Expired |
| US5676481A | Marking instruments | Performing Operations; Transporting | 12 | Expired |
| US6075070A | Marking instrument including liquid ink | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4300280A | Hair dryer and method for producing a heating element therefor | Emerging Cross-Sectional Technologies | 7 | Expired |
| USD435317S | Shaving part for shaver | General | 7 | Expired |
| US4514618A | Compact electric hair dryer | Electricity | 5 | Expired |
| US5775827A | Brush with cleaning element | Human Necessities | 5 | Expired |
| US6328496A | Marking instruments | Performing Operations; Transporting | 4 | Expired |
| US6518329B1 | Liquid ink | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4575941A | Dry shavers | Performing Operations; Transporting | 2 | Expired |
| USD428671S | Shaving part for shaver | General | 1 | Expired |
| USD430352S | Shaving part for shaver | General | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.