Piston Ring Company, Ltd.
1Patents
0Active
1Granted
27Portfolio score
Filing activity: Apr 28, 1989 → Apr 28, 1989
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5053085A | High strength, heat-resistant aluminum-based alloys | Chemistry; Metallurgy | 65 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.