Isao Yamada
2Patents
1Active
2Granted
31Portfolio score
Filing activity: Jan 8, 1998 → Apr 4, 2006 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7420189B2 | Ultra precise polishing method and ultra precise polishing apparatus | Electricity | 5 | Active |
| US6486068B2 | Method for manufacturing group III nitride compound semiconductor laser diodes | Electricity | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.