Ippo Hirai
3Patents
3h-index
7Co-inventors
39Inventor score
Filing activity: Jul 29, 1988 → Aug 10, 1992
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5207841A | Soft magnetic powder and magnetic shield composition | Chemistry; Metallurgy | 34 | Expired |
| US5252148A | Soft magnetic alloy, method for making, magnetic core, magnetic shield and compressed powder core using the same | Electricity | 34 | Expired |
| US4923533A | Magnetic shield-forming magnetically soft powder, composition thereof, and process of making | Emerging Cross-Sectional Technologies | 34 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.