Caere Corporation
18Patents
0Active
18Granted
31Portfolio score
Filing activity: May 27, 1977 → Oct 8, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5598557A | Apparatus and method for retrieving and grouping images representing text files based on the relevance of key words extracted from a selected file to the text files | Emerging Cross-Sectional Technologies | 513 | Expired |
| US6009442A | Computer-based document management system | Physics | 395 | Expired |
| US6237011A | Computer-based document management system | Physics | 169 | Expired |
| US6038342A | Optical character recognition method and apparatus | Physics | 83 | Expired |
| US6047251A | Automatic language identification system for multilingual optical character recognition | Physics | 74 | Expired |
| US5131053A | Optical character recognition method and apparatus | Physics | 67 | Expired |
| US5235651A | Rotation of images for optical character recognition | Physics | 42 | Expired |
| US5278918A | Optical character recognition method and apparatus using context analysis and a parsing algorithm which constructs a text data tree | Physics | 31 | Expired |
| US4240748A | Hand-held optical character recognition wand with visual aligner | Physics | 28 | Expired |
| US5862259A | Pattern recognition employing arbitrary segmentation and compound probabilistic evaluation | Physics | 25 | Expired |
| US5278920A | Optical character recognition method and apparatus | Physics | 23 | Expired |
| US4180799A | Apparatus and method for recognizing characters | Physics | 20 | Expired |
| US5436983A | Optical character recognition method and apparatus | Physics | 18 | Expired |
| USD251560S | Hand-held optical character recognition reader | General | 8 | Expired |
| US5381489A | Optical character recognition method and apparatus | Physics | 8 | Expired |
| US4403340A | OCR Matrix extractor | Physics | 8 | Expired |
| USD253593S | Lamp cartridge for optical character recognition reader | General | 3 | Expired |
| US4337455A | Apparatus for processing video signals received from an optical scanner | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.