John D. Philippi
2Patents
2h-index
5Co-inventors
41Inventor score
Filing activity: Nov 23, 1979 → Jan 19, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4323333A | Piston metering pump | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6398468B1 | Machine tool quill spindle | Emerging Cross-Sectional Technologies | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.