Patent assignee · JP · INDIVIDUAL

Isao Yamada

2Patents
1Active
2Granted
31Portfolio score

Filing activity: Jan 8, 1998 → Apr 4, 2006 · 1 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
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.