Charles E. Dull
5Patents
5h-index
7Co-inventors
48Inventor score
Filing activity: Apr 26, 1991 → Oct 24, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5172562A | Refrigerant recovery, purification and recharging system and method | Mechanical Engineering; Lighting; Heating | 53 | Expired |
| US5158747A | Apparatus for identifying and distinguishing different refrigerants | Physics | 24 | Expired |
| US5906106A | Refrigerant air analyzer and purge system | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5209077A | Refrigerant recovery system | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5693346A | Automatic molded hardboard unnesting system | Performing Operations; Transporting | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.