HIROTANI Co., Ltd.
4Patents
1Active
4Granted
28Portfolio score
Filing activity: Dec 17, 1987 → May 17, 2011 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4838939A | Composition particularly adapted to damping sheets for vehicles | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5350793A | Damping material | Chemistry; Metallurgy | 6 | Expired |
| US8556297B2 | Fender liner for vehicle and method for fabricating the same | Performing Operations; Transporting | 5 | Active |
| US5569695A | Self-fusion type damping material | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.