Hitachi Metal Ltd.
6Patents
1Active
6Granted
32Portfolio score
Filing activity: Feb 19, 1991 → Oct 14, 2005 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5174080A | Column and beam connecting assembly | Fixed Constructions | 17 | Expired |
| US6201942A | Developer-carrying member, and developing device and image forming apparatus including the member | Physics | 13 | Expired |
| US5815062A | Magnetic core | Electricity | 9 | Expired |
| US7716984B2 | Acceleration sensor device having piezo-resistors measuring acceleration | Physics | 5 | Active |
| US5252399A | Aluminum member provided with weather-resistant coat | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5195692A | Amorphous ribbon take-up method and apparatus therefor | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.