Crosfield Electronics Limited
134Patents
0Active
134Granted
42Portfolio score
Filing activity: Dec 16, 1974 → Jul 31, 1996
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5254977A | Color display | Physics | 117 | Expired |
| US5239292A | Computer graphics system electronically simulating painting on canvas | Physics | 111 | Expired |
| US5172423A | Methods and apparatus for defining contours in colored images | Physics | 106 | Expired |
| US4800379A | Image display with movable magnification | Electricity | 78 | Expired |
| US4922544A | Image processing | Electricity | 64 | Expired |
| US4037249A | Reproduction of colored images | Electricity | 62 | Expired |
| US4334240A | Interpolation methods and apparatus | Electricity | 57 | Expired |
| US4794382A | Image retouching | Physics | 56 | Expired |
| US4347785A | Engraving printing cylinders | Performing Operations; Transporting | 55 | Expired |
| US4930010A | Apparatus for generating a two-dimensional coloured display | Physics | 54 | Expired |
| US4659185A | Light beam splitter | Physics | 49 | Expired |
| US5463480A | Image processor for output devices which transforms data into acceptable color space | Electricity | 47 | Expired |
| US4346402A | Image-reproduction apparatus | Electricity | 47 | Expired |
| US3956583A | Image reproduction systems providing reproduction at a finer pitch than input scanning | Electricity | 47 | Expired |
| US4395946A | Rotary printing presses with inplace laser impression of printing surface | Performing Operations; Transporting | 44 | Expired |
| US5083195A | Color display control system | Electricity | 42 | Expired |
| US4012584A | Apparatus for making a screen reproduction of an image | Electricity | 38 | Expired |
| US5682443A | Image color modification method and apparatus employing unsharp masking | Electricity | 37 | Expired |
| US5343220A | Force monitor of an electronic paint brush apparatus | Physics | 36 | Expired |
| US4999526A | Apparatus for synchronizing clock signals | Electricity | 36 | Expired |
| US4829370A | Method of and apparatus for interactively modifying a high-resolution image wherein a low-resolution modified image is repeatedly displayed at increasingly higher resolutions | Physics | 35 | Expired |
| US4532596A | Controlling register in a printing press | Electricity | 35 | Expired |
| US4675725A | Image superimposing system | Physics | 35 | Expired |
| US5040233A | Data compression by discarding portions of data | Electricity | 33 | Expired |
| US4598282A | Video retouching system | Electricity | 32 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.