HITACI, LTD.
4Patents
0Active
4Granted
26Portfolio score
Filing activity: Feb 28, 1980 → Aug 11, 1993
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4324850A | Method of forming a fluorescent screen for a color picture tube | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5024094A | Ultrasonic imaging system of bonding zone | Physics | 9 | Expired |
| US5339105A | Multi-format digital image pickup apparatus | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4370126A | Combustion control apparatus | Mechanical Engineering; Lighting; Heating | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.