Hitach Metals, Ltd.
1Patents
0Active
1Granted
23Portfolio score
Filing activity: Jan 22, 1990 → Jan 22, 1990
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5150923A | Plastic pipe joint assembly for joining sections of plastic pipe | Performing Operations; Transporting | 8 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.