Hitachi Electronics, Ltd.
18Patents
0Active
18Granted
32Portfolio score
Filing activity: Aug 12, 1971 → Nov 16, 1988
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3936595A | Signal transmission system for transmitting programed information such as programed instruction | Electricity | 134 | Expired |
| US3988528A | Signal transmission system for transmitting a plurality of information signals through a plurality of transmission channels | Electricity | 128 | Expired |
| US3972066A | Method for image regulation of color monitors in proof-viewing and an apparatus therefor | Electricity | 25 | Expired |
| US3991265A | Signal editing and processing apparatus | Electricity | 21 | Expired |
| US3984189A | Method and apparatus for detecting defects in a surface regardless of surface finish | Physics | 19 | Expired |
| US3932698A | Multiplex signal transmission system | Electricity | 18 | Expired |
| US4937579A | Method of converting analog signals into digital signals and system for carrying out the method | Electricity | 12 | Expired |
| US3999011A | Method and system for controlling electron beam quantity in camera tube | Electricity | 11 | Expired |
| US3975657A | Method of and apparatus for controlling amount of electron beam in image pickup tube | Electricity | 9 | Expired |
| US4004205A | Hybrid servo control system | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4000716A | Epitaxial growth device | Chemistry; Metallurgy | 9 | Expired |
| US3997810A | Color pickup tube face plate with opaque shading stripes overlapping adjacent filters | Electricity | 7 | Expired |
| US3973079A | Two-level picture signal transmission system | Electricity | 4 | Expired |
| US3941920A | Receiver for a still picture broadcasting signal | Electricity | 3 | Expired |
| US3955274A | Method of manufacturing a low energy-loss waveguide circuit element | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4107568A | Face plate for color pick-up tube | Electricity | 2 | Expired |
| US3986102A | Low loss stabilized power supply circuit | Physics | 2 | Expired |
| US3967484A | Method of manufacturing a low energy-loss waveguide circuit element | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.