Laitram
250Patents
2Active
250Granted
44Portfolio score
Filing activity: Apr 9, 1971 → May 23, 2011 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4688933A | Electro-optical position determining system | Physics | 143 | Expired |
| US4832183A | Conveyor belt having insertable & selectable conveying member | Performing Operations; Transporting | 103 | Expired |
| US4891777A | Single hand keyboard arrays providing alphanumeric capabilities from twelve keys | Electricity | 100 | Expired |
| US6494312B2 | Modular roller-top conveyor belt with obliquely-arranged rollers | Performing Operations; Transporting | 93 | Expired |
| US4691818A | Concealed drive coupling for use with modular screw conveyor | Emerging Cross-Sectional Technologies | 92 | Expired |
| US6148990A | Modular roller-top conveyor belt | Performing Operations; Transporting | 85 | Expired |
| US6318544A | Changing the characteristics of an article-conveying belt surface on a running conveyor | Performing Operations; Transporting | 76 | Expired |
| US4031630A | Calibration apparatus for automatic magnetic compass correction | Physics | 71 | Expired |
| US6571937B1 | Switch conveyor | Performing Operations; Transporting | 68 | Expired |
| US4614953A | Solvent and multiple color ink mixing system in an ink jet | Performing Operations; Transporting | 68 | Expired |
| US6758323B2 | Singulating conveyor | Performing Operations; Transporting | 65 | Expired |
| US4711194A | Streamer interface adapter cable mounted leveler | Physics | 62 | Expired |
| US4832187A | Modular center drive conveyor belt | Performing Operations; Transporting | 55 | Expired |
| US6209716A | Knuckle drive link conveyor belt systems with removable load conveying surface members | Performing Operations; Transporting | 55 | Expired |
| US4934517A | Horizontal flexing conveyor belt | Performing Operations; Transporting | 54 | Expired |
| US5775480A | Low-friction conveyor assembly | Performing Operations; Transporting | 51 | Expired |
| US4925013A | Conveyor belt having a high friction conveying surface | Performing Operations; Transporting | 51 | Expired |
| US4091543A | Automatic magnetic compass correction | Physics | 50 | Expired |
| US4698912A | Magnetic compass calibration | Physics | 50 | Expired |
| US6467610B1 | Modular conveyor belts with pin-retained attachments | Performing Operations; Transporting | 49 | Expired |
| US3952311A | Electro-optical printing system | Electricity | 49 | Expired |
| US4213527A | Chain link conveyors | Emerging Cross-Sectional Technologies | 45 | Expired |
| US4170281A | Extrudable flexible modular tooth driven conveyor belt | Performing Operations; Transporting | 45 | Expired |
| US5200930A | Two-wire multi-channel streamer communication system | Physics | 45 | Expired |
| US5067103A | Hand held computers with alpha keystroke | Electricity | 43 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.