David M. Ryvin
2Patents
2h-index
1Co-inventors
30Inventor score
Filing activity: Mar 13, 1995 → Nov 6, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6341382B1 | One-piece adjustable headgear support | Emerging Cross-Sectional Technologies | 99 | Expired |
| US5575009A | Cold weather face mask and hood | Human Necessities | 68 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.