Tohoku Tokushuko Kabushiki Kaisha
4Patents
0Active
4Granted
24Portfolio score
Filing activity: Dec 14, 1982 → May 18, 2004
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7297214B2 | Free cutting alloy | Chemistry; Metallurgy | 3 | Expired |
| US6752883B2 | Free-cutting Ni-base heat-resistant alloy | Chemistry; Metallurgy | 3 | Expired |
| US4442067A | Material for semiconductor holder in electron beam writing apparatus | Electricity | 2 | Expired |
| US7381369B2 | Free cutting alloy | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.