Robert E. Heffner
6Patents
6h-index
3Co-inventors
52Inventor score
Filing activity: Jun 3, 1974 → Aug 4, 1986
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4685849A | Method for making an easy opening container end closure | Emerging Cross-Sectional Technologies | 63 | Expired |
| US4648528A | Easy opening container end closure | Performing Operations; Transporting | 40 | Expired |
| US3957005A | Method for making a metal can end | Performing Operations; Transporting | 36 | Expired |
| US4580692A | Container sealing cap | Performing Operations; Transporting | 26 | Expired |
| US4400251A | Method and apparatus for simultaneously electrocoating the interior and exterior of a metal container | Chemistry; Metallurgy | 16 | Expired |
| US4544475A | Electrocoating apparatus | Chemistry; Metallurgy | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.