Walter John
2Patents
2h-index
—Co-inventors
24Inventor score
Filing activity: Apr 6, 1994 → Feb 9, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5437198A | Universal impactor for particle collection within sampling criteria | Physics | 25 | Expired |
| US6170342A | Spiral sampler | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.