HITACHI CABLE, LTD.
868Patents
404Active
868Granted
53Portfolio score
Filing activity: Dec 11, 1974 → May 29, 2013 · 333 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6995510B2 | Light-emitting unit and method for producing same as well as lead frame used for producing light-emitting unit | Electricity | 270 | Expired |
| US7171087B2 | Optical fiber cable | Physics | 244 | Expired |
| US5482525A | Method of producing elliptic core type polarization-maintaining optical fiber | Emerging Cross-Sectional Technologies | 241 | Expired |
| US5499308A | Guided-wave optical multi/demultiplexer | Physics | 198 | Expired |
| US5491350A | Light emitting diode and process for fabricating the same | Electricity | 184 | Expired |
| US6696647B2 | Coaxial cable and coaxial multicore cable | Electricity | 162 | Expired |
| US6002167A | Semiconductor device having lead on chip structure | Electricity | 121 | Expired |
| US5916460A | Method and apparatus for dicing a substrate | Chemistry; Metallurgy | 102 | Expired |
| US5206925A | Rare earth element-doped optical waveguide and process for producing the same | Electricity | 102 | Expired |
| US7139527B2 | Multi point wireless transmission repeater system and wireless equipments | Electricity | 101 | Expired |
| US6270569A | Method of fabricating nitride crystal, mixture, liquid phase growth method, nitride crystal, nitride crystal powders, and vapor phase growth method | Chemistry; Metallurgy | 99 | Expired |
| US5519799A | Optical fiber array structure | Physics | 90 | Expired |
| US5812709A | Optical device having switching function | Electricity | 90 | Expired |
| US6963310B2 | Mobile phone antenna | Electricity | 87 | Expired |
| US5216202A | Metal-shielded cable suitable for electronic devices | Electricity | 86 | Expired |
| US5651414A | Heat-pipe type cooling apparatus | Electricity | 83 | Expired |
| US5528152A | Method for measuring transmission parameters of balanced pair | Physics | 75 | Expired |
| US5995696A | Hollow waveguide and method of making same | Physics | 70 | Expired |
| US5780875A | Hybrid optical integration assembly using optical platform | Electricity | 67 | Expired |
| US5583492A | Method and apparatus for monitoring inside a manhole | Electricity | 67 | Expired |
| US5857761A | Illumination device | Physics | 65 | Expired |
| US6847329B2 | Plate-like multiple antenna and electrical equipment provided therewith | Electricity | 65 | Expired |
| US6534717B2 | Self-lubricating enameled wire | Chemistry; Metallurgy | 64 | Expired |
| US6903264B2 | Electric wire coated with polyvinyl chloride resin composition and cable | Chemistry; Metallurgy | 62 | Expired |
| US6021239A | Photocoupler and method for producing the same | Emerging Cross-Sectional Technologies | 60 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.